Letter
Open Access

First observation of $Λ_{b}^{0} \to Σ_{c}^{() + +} D^{() -} K^{-}$ decays

R. Aaij ³⁵, A. S. W. Abdelmotteleb ⁵⁴, C. Abellan Beteta⁴⁸, F. Abudinén ⁵⁴, T. Ackernley ⁵⁸, A. A. Adefisoye ⁶⁶, B. Adeva ⁴⁴, M. Adinolfi ⁵², P. Adlarson ⁷⁹ et al. (LHCb Collaboration)

P. Adlarson ⁷⁹, C. Agapopoulou ⁴⁶, C. A. Aidala ⁸⁰, Z. Ajaltouni¹¹, S. Akar ⁶³, K. Akiba ³⁵, P. Albicocco ²⁵, J. Albrecht ¹⁷, F. Alessio ⁴⁶, M. Alexander ⁵⁷, Z. Aliouche ⁶⁰, P. Alvarez Cartelle ⁵³, R. Amalric ¹⁵, S. Amato ³, J. L. Amey ⁵², Y. Amhis ^13,46, L. An ⁶, L. Anderlini ²⁴, M. Andersson ⁴⁸, A. Andreianov ⁴¹, P. Andreola ⁴⁸, M. Andreotti ²³, D. Andreou ⁶⁶, A. Anelli ^28,b, D. Ao ⁷, F. Archilli ^34,c, M. Argenton ²³, S. Arguedas Cuendis ⁹, A. Artamonov ⁴¹, M. Artuso ⁶⁶, E. Aslanides ¹², M. Atzeni ⁶², B. Audurier ¹⁴, D. Bacher ⁶¹, I. Bachiller Perea ¹⁰, S. Bachmann ¹⁹, M. Bachmayer ⁴⁷, J. J. Back ⁵⁴, P. Baladron Rodriguez ⁴⁴, V. Balagura ¹⁴, W. Baldini ²³, J. Baptista de Souza Leite ⁵⁸, M. Barbetti ^24,d, I. R. Barbosa ⁶⁷, R. J. Barlow ⁶⁰, S. Barsuk ¹³, W. Barter ⁵⁶, M. Bartolini ⁵³, J. Bartz ⁶⁶, F. Baryshnikov ⁴¹, J. M. Basels ¹⁶, G. Bassi ³², B. Batsukh ⁵, A. Battig ¹⁷, A. Bay ⁴⁷, A. Beck ⁵⁴, M. Becker ¹⁷, F. Bedeschi ³², I. B. Bediaga ², A. Beiter⁶⁶, S. Belin ⁴⁴, V. Bellee ⁴⁸, K. Belous ⁴¹, I. Belov ²⁶, I. Belyaev ³³, G. Benane ¹², G. Bencivenni ²⁵, E. Ben-Haim ¹⁵, A. Berezhnoy ⁴¹, R. Bernet ⁴⁸, S. Bernet Andres ⁴², C. Bertella ⁶⁰, A. Bertolin ³⁰, C. Betancourt ⁴⁸, F. Betti ⁵⁶, J. Bex ⁵³, Ia. Bezshyiko ⁴⁸, J. Bhom ³⁸, M. S. Bieker ¹⁷, N. V. Biesuz ²³, P. Billoir ¹⁵, A. Biolchini ³⁵, M. Birch ⁵⁹, F. C. R. Bishop ¹⁰, A. Bitadze ⁶⁰, A. Bizzeti , T. Blake ⁵⁴, F. Blanc ⁴⁷, J. E. Blank ¹⁷, S. Blusk ⁶⁶, V. Bocharnikov ⁴¹, J. A. Boelhauve ¹⁷, O. Boente Garcia ¹⁴, T. Boettcher ⁶³, A. Bohare ⁵⁶, A. Boldyrev ⁴¹, C. S. Bolognani ⁷⁶, R. Bolzonella ^23,e, N. Bondar ⁴¹, F. Borgato ^30,46,f, S. Borghi ⁶⁰, M. Borsato ^28,b, J. T. Borsuk ³⁸, S. A. Bouchiba ⁴⁷, T. J. V. Bowcock ⁵⁸, A. Boyer ⁴⁶, C. Bozzi ²³, M. J. Bradley⁵⁹, A. Brea Rodriguez ⁴⁴, N. Breer ¹⁷, J. Brodzicka ³⁸, A. Brossa Gonzalo ⁴⁴, J. Brown ⁵⁸, D. Brundu ²⁹, E. Buchanan⁵⁶, A. Buonaura ⁴⁸, L. Buonincontri ^30,f, A. T. Burke ⁶⁰, C. Burr ⁴⁶, A. Bursche⁶⁹, A. Butkevich ⁴¹, J. S. Butter ⁵³, J. Buytaert ⁴⁶, W. Byczynski ⁴⁶, S. Cadeddu ²⁹, H. Cai⁷¹, R. Calabrese ^23,e, L. Calefice ⁴³, S. Cali ²⁵, M. Calvi ^28,b, M. Calvo Gomez ⁴², J. I. Cambon Bouzas ⁴⁴, P. Campana ²⁵, D. H. Campora Perez ⁷⁶, A. F. Campoverde Quezada ⁷, S. Capelli ^28,b, L. Capriotti ²³, R. Caravaca-Mora ⁹, A. Carbone ^22,g, L. Carcedo Salgado ⁴⁴, R. Cardinale ^26,h, A. Cardini ²⁹, P. Carniti ^28,b, L. Carus¹⁹, A. Casais Vidal ⁶², R. Caspary ¹⁹, G. Casse ⁵⁸, J. Castro Godinez ⁹, M. Cattaneo ⁴⁶, G. Cavallero ²³, V. Cavallini ^23,e, S. Celani ¹⁹, J. Cerasoli ¹², D. Cervenkov ⁶¹, S. Cesare ^27,i, A. J. Chadwick ⁵⁸, I. Chahrour ⁸⁰, M. Charles ¹⁵, Ph. Charpentier ⁴⁶, C. A. Chavez Barajas ⁵⁸, M. Chefdeville ¹⁰, C. Chen ¹², S. Chen ⁵, Z. Chen ⁷, A. Chernov ³⁸, S. Chernyshenko ⁵⁰, V. Chobanova ⁷⁸, S. Cholak ⁴⁷, M. Chrzaszcz ³⁸, A. Chubykin ⁴¹, V. Chulikov ⁴¹, P. Ciambrone ²⁵, X. Cid Vidal ⁴⁴, G. Ciezarek ⁴⁶, P. Cifra ⁴⁶, P. E. L. Clarke ⁵⁶, M. Clemencic ⁴⁶, H. V. Cliff ⁵³, J. Closier ⁴⁶, C. Cocha Toapaxi ¹⁹, V. Coco ⁴⁶, J. Cogan ¹², E. Cogneras ¹¹, L. Cojocariu ⁴⁰, P. Collins ⁴⁶, T. Colombo ⁴⁶, A. Comerma-Montells ⁴³, L. Congedo ²¹, A. Contu ²⁹, N. Cooke ⁵⁷, I. Corredoira ⁴⁴, A. Correia ¹⁵, G. Corti ⁴⁶, J. J. Cottee Meldrum⁵², B. Couturier ⁴⁶, D. C. Craik ⁴⁸, M. Cruz Torres ^2,j, E. Curras Rivera ⁴⁷, R. Currie ⁵⁶, C. L. Da Silva ⁶⁵, S. Dadabaev ⁴¹, L. Dai ⁶⁸, X. Dai ⁶, E. Dall’Occo ¹⁷, J. Dalseno ⁴⁴, C. D’Ambrosio ⁴⁶, J. Daniel ¹¹, A. Danilina ⁴¹, P. d’Argent ²¹, A. Davidson ⁵⁴, J. E. Davies ⁶⁰, A. Davis ⁶⁰, O. De Aguiar Francisco ⁶⁰, C. De Angelis ^29,k, F. De Benedetti ⁴⁶, J. de Boer ³⁵, K. De Bruyn ⁷⁵, S. De Capua ⁶⁰, M. De Cian ^19,46, U. De Freitas Carneiro Da Graca ^2,l, E. De Lucia ²⁵, J. M. De Miranda ², L. De Paula ³, M. De Serio ^21,m, D. De Simone ⁴⁸, P. De Simone ²⁵, F. De Vellis ¹⁷, J. A. de Vries ⁷⁶, F. Debernardis ²¹, D. Decamp ¹⁰, V. Dedu ¹², L. Del Buono ¹⁵, B. Delaney ⁶², H.-P. Dembinski ¹⁷, J. Deng ⁸, V. Denysenko ⁴⁸, O. Deschamps ¹¹, F. Dettori ^29,k, B. Dey ⁷⁴, P. Di Nezza ²⁵, I. Diachkov ⁴¹, S. Didenko ⁴¹, S. Ding ⁶⁶, L. Dittmann ¹⁹, V. Dobishuk ⁵⁰, A. D. Docheva ⁵⁷, A. Dolmatov⁴¹, C. Dong ⁴, A. M. Donohoe ²⁰, F. Dordei ²⁹, A. C. dos Reis ², A. D. Dowling ⁶⁶, A. G. Downes ¹⁰, W. Duan ⁶⁹, P. Duda ⁷⁷, M. W. Dudek ³⁸, L. Dufour ⁴⁶, V. Duk ³¹, P. Durante ⁴⁶, M. M. Duras ⁷⁷, J. M. Durham ⁶⁵, O. D. Durmus ⁷⁴, A. Dziurda ³⁸, A. Dzyuba ⁴¹, S. Easo ⁵⁵, E. Eckstein⁷³, U. Egede ¹, A. Egorychev ⁴¹, V. Egorychev ⁴¹, S. Eisenhardt ⁵⁶, E. Ejopu ⁶⁰, S. Ek-In ⁴⁷, L. Eklund ⁷⁹, M. Elashri ⁶³, J. Ellbracht ¹⁷, S. Ely ⁵⁹, A. Ene ⁴⁰, E. Epple ⁶³, S. Escher ¹⁶, J. Eschle ⁴⁸, S. Esen ¹⁹, T. Evans ⁶⁰, F. Fabiano ^29,46,k, L. N. Falcao ², Y. Fan ⁷, B. Fang ^71,13, L. Fantini ^31,n, M. Faria ⁴⁷, K. Farmer ⁵⁶, D. Fazzini ^28,b, L. Felkowski ⁷⁷, M. Feng ^5,7, M. Feo ⁴⁶, M. Fernandez Gomez ⁴⁴, A. D. Fernez ⁶⁴, F. Ferrari ²², F. Ferreira Rodrigues ³, S. Ferreres Sole ³⁵, M. Ferrillo ⁴⁸, M. Ferro-Luzzi ⁴⁶, S. Filippov ⁴¹, R. A. Fini ²¹, M. Fiorini ^23,e, K. M. Fischer ⁶¹, D. S. Fitzgerald ⁸⁰, C. Fitzpatrick ⁶⁰, F. Fleuret ¹⁴, M. Fontana ²², L. F. Foreman ⁶⁰, R. Forty ⁴⁶, D. Foulds-Holt ⁵³, M. Franco Sevilla ⁶⁴, M. Frank ⁴⁶, E. Franzoso ^23,e, G. Frau ¹⁹, C. Frei ⁴⁶, D. A. Friday ⁶⁰, J. Fu ⁷, Q. Fuehring ¹⁷, Y. Fujii ¹, T. Fulghesu ¹⁵, E. Gabriel ³⁵, G. Galati ^21,m, M. D. Galati ³⁵, A. Gallas Torreira ⁴⁴, D. Galli ^22,g, S. Gambetta ⁵⁶, M. Gandelman ³, P. Gandini ²⁷, H. Gao ⁷, R. Gao ⁶¹, Y. Gao ⁸, Y. Gao ⁶, Y. Gao⁸, M. Garau ^29,k, L. M. Garcia Martin ⁴⁷, P. Garcia Moreno ⁴³, J. García Pardiñas ⁴⁶, K. G. Garg ⁸, L. Garrido ⁴³, C. Gaspar ⁴⁶, R. E. Geertsema ³⁵, L. L. Gerken ¹⁷, E. Gersabeck ⁶⁰, M. Gersabeck ⁶⁰, T. Gershon ⁵⁴, Z. Ghorbanimoghaddam⁵², L. Giambastiani ^30,f, F. I. Giasemis ^15,o, V. Gibson ⁵³, H. K. Giemza ³⁹, A. L. Gilman ⁶¹, M. Giovannetti ²⁵, A. Gioventù ⁴³, P. Gironella Gironell ⁴³, C. Giugliano ^23,e, M. A. Giza ³⁸, E. L. Gkougkousis ⁵⁹, F. C. Glaser ^13,19, V. V. Gligorov ¹⁵, C. Göbel ⁶⁷, E. Golobardes ⁴², D. Golubkov ⁴¹, A. Golutvin ^59,41,46, A. Gomes ^2,a,p, S. Gomez Fernandez ⁴³, F. Goncalves Abrantes ⁶¹, M. Goncerz ³⁸, G. Gong ⁴, J. A. Gooding ¹⁷, I. V. Gorelov ⁴¹, C. Gotti ²⁸, J. P. Grabowski ⁷³, L. A. Granado Cardoso ⁴⁶, E. Graugés ⁴³, E. Graverini ^47,q, L. Grazette ⁵⁴, G. Graziani , A. T. Grecu ⁴⁰, L. M. Greeven ³⁵, N. A. Grieser ⁶³, L. Grillo ⁵⁷, S. Gromov ⁴¹, C. Gu ¹⁴, M. Guarise ²³, M. Guittiere ¹³, V. Guliaeva ⁴¹, P. A. Günther ¹⁹, A.-K. Guseinov ⁴⁷, E. Gushchin ⁴¹, Y. Guz ^6,41,46, T. Gys ⁴⁶, K. Habermann ⁷³, T. Hadavizadeh ¹, C. Hadjivasiliou ⁶⁴, G. Haefeli ⁴⁷, C. Haen ⁴⁶, J. Haimberger ⁴⁶, M. Hajheidari⁴⁶, M. M. Halvorsen ⁴⁶, P. M. Hamilton ⁶⁴, J. Hammerich ⁵⁸, Q. Han ⁸, X. Han ¹⁹, S. Hansmann-Menzemer ¹⁹, L. Hao ⁷, N. Harnew ⁶¹, T. Harrison ⁵⁸, M. Hartmann ¹³, J. He ^7,r, K. Heijhoff ³⁵, F. Hemmer ⁴⁶, C. Henderson ⁶³, R. D. L. Henderson ^1,54, A. M. Hennequin ⁴⁶, K. Hennessy ⁵⁸, L. Henry ⁴⁷, J. Herd ⁵⁹, P. Herrero Gascon ¹⁹, J. Heuel ¹⁶, A. Hicheur ³, G. Hijano Mendizabal⁴⁸, D. Hill ⁴⁷, S. E. Hollitt ¹⁷, J. Horswill ⁶⁰, R. Hou ⁸, Y. Hou ¹⁰, N. Howarth⁵⁸, J. Hu¹⁹, J. Hu ⁶⁹, W. Hu ⁶, X. Hu ⁴, W. Huang ⁷, W. Hulsbergen ³⁵, R. J. Hunter ⁵⁴, M. Hushchyn ⁴¹, D. Hutchcroft ⁵⁸, D. Ilin ⁴¹, P. Ilten ⁶³, A. Inglessi ⁴¹, A. Iniukhin ⁴¹, A. Ishteev ⁴¹, K. Ivshin ⁴¹, R. Jacobsson ⁴⁶, H. Jage ¹⁶, S. J. Jaimes Elles ^45,72, S. Jakobsen ⁴⁶, E. Jans ³⁵, B. K. Jashal ⁴⁵, A. Jawahery ^64,46, V. Jevtic ¹⁷, E. Jiang ⁶⁴, X. Jiang ^5,7, Y. Jiang ⁷, Y. J. Jiang ⁶, M. John ⁶¹, D. Johnson ⁵¹, C. R. Jones ⁵³, T. P. Jones ⁵⁴, S. Joshi ³⁹, B. Jost ⁴⁶, N. Jurik ⁴⁶, I. Juszczak ³⁸, D. Kaminaris ⁴⁷, S. Kandybei ⁴⁹, Y. Kang ⁴, M. Karacson ⁴⁶, D. Karpenkov ⁴¹, A. Kauniskangas ⁴⁷, J. W. Kautz ⁶³, F. Keizer ⁴⁶, M. Kenzie ⁵³, T. Ketel ³⁵, B. Khanji ⁶⁶, A. Kharisova ⁴¹, S. Kholodenko ³², G. Khreich ¹³, T. Kirn ¹⁶, V. S. Kirsebom ^28,b, O. Kitouni ⁶², S. Klaver ³⁶, N. Kleijne ^32,s, K. Klimaszewski ³⁹, M. R. Kmiec ³⁹, S. Koliiev ⁵⁰, L. Kolk ¹⁷, A. Konoplyannikov ⁴¹, P. Kopciewicz ^37,46, P. Koppenburg ³⁵, M. Korolev ⁴¹, I. Kostiuk ³⁵, O. Kot⁵⁰, S. Kotriakhova , A. Kozachuk ⁴¹, P. Kravchenko ⁴¹, L. Kravchuk ⁴¹, M. Kreps ⁵⁴, S. Kretzschmar ¹⁶, P. Krokovny ⁴¹, W. Krupa ⁶⁶, W. Krzemien ³⁹, J. Kubat¹⁹, S. Kubis ⁷⁷, W. Kucewicz ³⁸, M. Kucharczyk ³⁸, V. Kudryavtsev ⁴¹, E. Kulikova ⁴¹, A. Kupsc ⁷⁹, B. K. Kutsenko ¹², D. Lacarrere ⁴⁶, A. Lai ²⁹, A. Lampis ²⁹, D. Lancierini ⁵³, C. Landesa Gomez ⁴⁴, J. J. Lane ¹, R. Lane ⁵², C. Langenbruch ¹⁹, J. Langer ¹⁷, O. Lantwin ⁴¹, T. Latham ⁵⁴, F. Lazzari ^32,q, C. Lazzeroni ⁵¹, R. Le Gac ¹², R. Lefèvre ¹¹, A. Leflat ⁴¹, S. Legotin ⁴¹, M. Lehuraux ⁵⁴, E. Lemos Cid ⁴⁶, O. Leroy ¹², T. Lesiak ³⁸, B. Leverington ¹⁹, A. Li ⁴, H. Li ⁶⁹, K. Li ⁸, L. Li ⁶⁰, P. Li ⁴⁶, P.-R. Li ⁷⁰, S. Li ⁸, T. Li ^5,t, T. Li ⁶⁹, Y. Li⁸, Y. Li ⁵, Z. Li ⁶⁶, Z. Lian ⁴, X. Liang ⁶⁶, S. Libralon ⁴⁵, C. Lin ⁷, T. Lin ⁵⁵, R. Lindner ⁴⁶, V. Lisovskyi ⁴⁷, R. Litvinov ^29,k, F. L. Liu ¹, G. Liu ⁶⁹, K. Liu ⁷⁰, Q. Liu ⁷, S. Liu ^5,7, Y. Liu ⁵⁶, Y. Liu⁷⁰, Y. L. Liu ⁵⁹, A. Lobo Salvia ⁴³, A. Loi ²⁹, J. Lomba Castro ⁴⁴, T. Long ⁵³, J. H. Lopes ³, A. Lopez Huertas ⁴³, S. López Soliño ⁴⁴, G. H. Lovell ⁵³, C. Lucarelli ^24,d, D. Lucchesi ^30,f, S. Luchuk ⁴¹, M. Lucio Martinez ⁷⁶, V. Lukashenko ^35,50, Y. Luo ⁶, A. Lupato ³⁰, E. Luppi ^23,e, K. Lynch ²⁰, X.-R. Lyu ⁷, G. M. Ma ⁴, R. Ma ⁷, S. Maccolini ¹⁷, F. Machefert ¹³, F. Maciuc ⁴⁰, B. M. Mack ⁶⁶, I. Mackay ⁶¹, L. M. Mackey ⁶⁶, L. R. Madhan Mohan ⁵³, M. M. Madurai ⁵¹, A. Maevskiy ⁴¹, D. Magdalinski ³⁵, D. Maisuzenko ⁴¹, M. W. Majewski³⁷, J. J. Malczewski ³⁸, S. Malde ⁶¹, B. Malecki ^38,46, L. Malentacca⁴⁶, A. Malinin ⁴¹, T. Maltsev ⁴¹, G. Manca ^29,k, G. Mancinelli ¹², C. Mancuso ^27,13,i, R. Manera Escalero⁴³, D. Manuzzi ²², D. Marangotto ^27,i, J. F. Marchand ¹⁰, R. Marchevski ⁴⁷, U. Marconi ²², S. Mariani ⁴⁶, C. Marin Benito ⁴³, J. Marks ¹⁹, A. M. Marshall ⁵², P. J. Marshall⁵⁸, G. Martelli ^31,n, G. Martellotti ³³, L. Martinazzoli ⁴⁶, M. Martinelli ^28,b, D. Martinez Santos ⁴⁴, F. Martinez Vidal ⁴⁵, A. Massafferri ², M. Materok ¹⁶, R. Matev ⁴⁶, A. Mathad ⁴⁶, V. Matiunin ⁴¹, C. Matteuzzi ⁶⁶, K. R. Mattioli ¹⁴, A. Mauri ⁵⁹, E. Maurice ¹⁴, J. Mauricio ⁴³, P. Mayencourt ⁴⁷, M. Mazurek ³⁹, M. McCann ⁵⁹, L. Mcconnell ²⁰, T. H. McGrath ⁶⁰, N. T. McHugh ⁵⁷, A. McNab ⁶⁰, R. McNulty ²⁰, B. Meadows ⁶³, G. Meier ¹⁷, D. Melnychuk ³⁹, M. Merk ^35,76, A. Merli ^27,i, L. Meyer Garcia ³, D. Miao ^5,7, H. Miao ⁷, M. Mikhasenko ^73,u, D. A. Milanes ⁷², A. Minotti ^28,b, E. Minucci ⁶⁶, T. Miralles ¹¹, B. Mitreska ¹⁷, D. S. Mitzel ¹⁷, A. Modak ⁵⁵, A. Mödden ¹⁷, R. A. Mohammed ⁶¹, R. D. Moise ¹⁶, S. Mokhnenko ⁴¹, T. Mombächer ⁴⁶, M. Monk ^54,1, S. Monteil ¹¹, A. Morcillo Gomez ⁴⁴, G. Morello ²⁵, M. J. Morello ^32,s, M. P. Morgenthaler ¹⁹, A. B. Morris ⁴⁶, A. G. Morris ¹², R. Mountain ⁶⁶, H. Mu ⁴, Z. M. Mu ⁶, E. Muhammad ⁵⁴, F. Muheim ⁵⁶, M. Mulder ⁷⁵, K. Müller ⁴⁸, F. Muñoz-Rojas ⁹, R. Murta ⁵⁹, P. Naik ⁵⁸, T. Nakada ⁴⁷, R. Nandakumar ⁵⁵, T. Nanut ⁴⁶, I. Nasteva ³, M. Needham ⁵⁶, N. Neri ^27,i, S. Neubert ⁷³, N. Neufeld ⁴⁶, P. Neustroev⁴¹, J. Nicolini ^17,13, D. Nicotra ⁷⁶, E. M. Niel ⁴⁷, N. Nikitin ⁴¹, P. Nogga⁷³, N. S. Nolte ⁶², C. Normand ⁵², J. Novoa Fernandez ⁴⁴, G. Nowak ⁶³, C. Nunez ⁸⁰, H. N. Nur ⁵⁷, A. Oblakowska-Mucha ³⁷, V. Obraztsov ⁴¹, T. Oeser ¹⁶, S. Okamura ^23,46,e, A. Okhotnikov⁴¹, R. Oldeman ^29,k, F. Oliva ⁵⁶, M. Olocco ¹⁷, C. J. G. Onderwater ⁷⁶, R. H. O’Neil ⁵⁶, J. M. Otalora Goicochea ³, P. Owen ⁴⁸, A. Oyanguren ⁴⁵, O. Ozcelik ⁵⁶, K. O. Padeken ⁷³, B. Pagare ⁵⁴, P. R. Pais ¹⁹, T. Pajero ⁶¹, A. Palano ²¹, M. Palutan ²⁵, G. Panshin ⁴¹, L. Paolucci ⁵⁴, A. Papanestis ⁵⁵, M. Pappagallo ^21,m, L. L. Pappalardo ^23,e, C. Pappenheimer ⁶³, C. Parkes ⁶⁰, B. Passalacqua ²³, G. Passaleva ²⁴, D. Passaro ^32,s, A. Pastore ²¹, M. Patel ⁵⁹, J. Patoc ⁶¹, C. Patrignani ^22,g, C. J. Pawley ⁷⁶, A. Pellegrino ³⁵, M. Pepe Altarelli ²⁵, S. Perazzini ²², D. Pereima ⁴¹, A. Pereiro Castro ⁴⁴, P. Perret ¹¹, A. Perro ⁴⁶, K. Petridis ⁵², A. Petrolini ^26,h, S. Petrucci ⁵⁶, J. P. Pfaller ⁶³, H. Pham ⁶⁶, L. Pica ^32,s, M. Piccini ³¹, B. Pietrzyk ¹⁰, G. Pietrzyk ¹³, D. Pinci ³³, F. Pisani ⁴⁶, M. Pizzichemi ^28,b, V. Placinta ⁴⁰, M. Plo Casasus ⁴⁴, F. Polci ^15,46, M. Poli Lener ²⁵, A. Poluektov ¹², N. Polukhina ⁴¹, I. Polyakov ⁴⁶, E. Polycarpo ³, S. Ponce ⁴⁶, D. Popov ⁷, S. Poslavskii ⁴¹, K. Prasanth ³⁸, C. Prouve ⁴⁴, V. Pugatch ⁵⁰, G. Punzi ^32,q, W. Qian ⁷, N. Qin ⁴, S. Qu ⁴, R. Quagliani ⁴⁷, R. I. Rabadan Trejo ⁵⁴, J. H. Rademacker ⁵², M. Rama ³², M. Ramírez García ⁸⁰, M. Ramos Pernas ⁵⁴, M. S. Rangel ³, F. Ratnikov ⁴¹, G. Raven ³⁶, M. Rebollo De Miguel ⁴⁵, F. Redi ^27,v, J. Reich ⁵², F. Reiss ⁶⁰, Z. Ren ⁷, P. K. Resmi ⁶¹, R. Ribatti ^32,s, G. R. Ricart ^14,81, D. Riccardi ^32,s, S. Ricciardi ⁵⁵, K. Richardson ⁶², M. Richardson-Slipper ⁵⁶, K. Rinnert ⁵⁸, P. Robbe ¹³, G. Robertson ⁵⁷, E. Rodrigues ⁵⁸, E. Rodriguez Fernandez ⁴⁴, J. A. Rodriguez Lopez ⁷², E. Rodriguez Rodriguez ⁴⁴, A. Rogovskiy ⁵⁵, D. L. Rolf ⁴⁶, P. Roloff ⁴⁶, V. Romanovskiy ⁴¹, M. Romero Lamas ⁴⁴, A. Romero Vidal ⁴⁴, G. Romolini ²³, F. Ronchetti ⁴⁷, M. Rotondo ²⁵, S. R. Roy ¹⁹, M. S. Rudolph ⁶⁶, T. Ruf ⁴⁶, M. Ruiz Diaz ¹⁹, R. A. Ruiz Fernandez ⁴⁴, J. Ruiz Vidal ^79,w, A. Ryzhikov ⁴¹, J. Ryzka ³⁷, J. J. Saavedra-Arias ⁹, J. J. Saborido Silva ⁴⁴, R. Sadek ¹⁴, N. Sagidova ⁴¹, D. Sahoo ⁷⁴, N. Sahoo ⁵¹, B. Saitta ^29,k, M. Salomoni ^28,b, C. Sanchez Gras ³⁵, I. Sanderswood ⁴⁵, R. Santacesaria ³³, C. Santamarina Rios ⁴⁴, M. Santimaria ²⁵, L. Santoro ², E. Santovetti ³⁴, A. Saputi ^23,46, D. Saranin ⁴¹, G. Sarpis ⁵⁶, M. Sarpis ⁷³, A. Sarti ³³, C. Satriano ^33,x, A. Satta ³⁴, M. Saur ⁶, D. Savrina ⁴¹, H. Sazak ¹⁶, L. G. Scantlebury Smead ⁶¹, A. Scarabotto ¹⁷, S. Schael ¹⁶, S. Scherl ⁵⁸, A. M. Schertz ⁷⁴, M. Schiller ⁵⁷, H. Schindler ⁴⁶, M. Schmelling ¹⁸, B. Schmidt ⁴⁶, S. Schmitt ¹⁶, H. Schmitz⁷³, O. Schneider ⁴⁷, A. Schopper ⁴⁶, N. Schulte ¹⁷, S. Schulte ⁴⁷, M. H. Schune ¹³, R. Schwemmer ⁴⁶, G. Schwering ¹⁶, B. Sciascia ²⁵, A. Sciuccati ⁴⁶, S. Sellam ⁴⁴, A. Semennikov ⁴¹, T. Senger ⁴⁸, M. Senghi Soares ³⁶, A. Sergi ²⁶, N. Serra ⁴⁸, L. Sestini ³⁰, A. Seuthe ¹⁷, Y. Shang ⁶, D. M. Shangase ⁸⁰, M. Shapkin ⁴¹, R. S. Sharma ⁶⁶, I. Shchemerov ⁴¹, L. Shchutska ⁴⁷, T. Shears ⁵⁸, L. Shekhtman ⁴¹, Z. Shen ⁶, S. Sheng ^5,7, V. Shevchenko ⁴¹, B. Shi ⁷, E. B. Shields ^28,b, Y. Shimizu ¹³, E. Shmanin ⁴¹, R. Shorkin ⁴¹, J. D. Shupperd ⁶⁶, R. Silva Coutinho ⁶⁶, G. Simi ^30,f, S. Simone ^21,m, N. Skidmore ⁵⁴, T. Skwarnicki ⁶⁶, M. W. Slater ⁵¹, J. C. Smallwood ⁶¹, E. Smith ⁶², K. Smith ⁶⁵, M. Smith ⁵⁹, A. Snoch ³⁵, L. Soares Lavra ⁵⁶, M. D. Sokoloff ⁶³, F. J. P. Soler ⁵⁷, A. Solomin ^41,52, A. Solovev ⁴¹, I. Solovyev ⁴¹, R. Song ¹, Y. Song ⁴⁷, Y. Song ⁴, Y. S. Song ⁶, F. L. Souza De Almeida ⁶⁶, B. Souza De Paula ³, E. Spadaro Norella ^27,i, E. Spedicato ²², J. G. Speer ¹⁷, E. Spiridenkov⁴¹, P. Spradlin ⁵⁷, V. Sriskaran ⁴⁶, F. Stagni ⁴⁶, M. Stahl ⁴⁶, S. Stahl ⁴⁶, S. Stanislaus ⁶¹, E. N. Stein ⁴⁶, O. Steinkamp ⁴⁸, O. Stenyakin⁴¹, H. Stevens ¹⁷, D. Strekalina ⁴¹, Y. Su ⁷, F. Suljik ⁶¹, J. Sun ²⁹, L. Sun ⁷¹, Y. Sun ⁶⁴, W. Sutcliffe⁴⁸, P. N. Swallow ⁵¹, F. Swystun ⁵³, A. Szabelski ³⁹, T. Szumlak ³⁷, Y. Tan ⁴, S. Taneja ⁶⁰, M. D. Tat ⁶¹, A. Terentev ⁴⁸, F. Terzuoli ^32,y, F. Teubert ⁴⁶, E. Thomas ⁴⁶, D. J. D. Thompson ⁵¹, H. Tilquin ⁵⁹, V. Tisserand ¹¹, S. T’Jampens ¹⁰, M. Tobin ⁵, L. Tomassetti ^23,e, G. Tonani ^27,46,i, X. Tong ⁶, D. Torres Machado ², L. Toscano ¹⁷, D. Y. Tou ⁴, C. Trippl ⁴², G. Tuci ¹⁹, N. Tuning ³⁵, L. H. Uecker ¹⁹, A. Ukleja ³⁷, D. J. Unverzagt ¹⁹, E. Ursov ⁴¹, A. Usachov ³⁶, A. Ustyuzhanin ⁴¹, U. Uwer ¹⁹, V. Vagnoni ²², A. Valassi ⁴⁶, G. Valenti ²², N. Valls Canudas ⁴², H. Van Hecke ⁶⁵, E. van Herwijnen ⁵⁹, C. B. Van Hulse ^44,z, R. Van Laak ⁴⁷, M. van Veghel ³⁵, R. Vazquez Gomez ⁴³, P. Vazquez Regueiro ⁴⁴, C. Vázquez Sierra ⁴⁴, S. Vecchi ²³, J. J. Velthuis ⁵², M. Veltri ^24,aa, A. Venkateswaran ⁴⁷, M. Vesterinen ⁵⁴, M. Vieites Diaz ⁴⁶, X. Vilasis-Cardona ⁴², E. Vilella Figueras ⁵⁸, A. Villa ²², P. Vincent ¹⁵, F. C. Volle ¹³, D. vom Bruch ¹², V. Vorobyev⁴¹, N. Voropaev ⁴¹, K. Vos ⁷⁶, G. Vouters ¹⁰, C. Vrahas ⁵⁶, J. Wagner ¹⁷, J. Walsh ³², E. J. Walton ^1,54, G. Wan ⁶, C. Wang ¹⁹, G. Wang ⁸, J. Wang ⁶, J. Wang ⁵, J. Wang ⁴, J. Wang ⁷¹, M. Wang ²⁷, N. W. Wang ⁷, R. Wang ⁵², X. Wang ⁶⁹, X. W. Wang ⁵⁹, Y. Wang ⁸, Z. Wang ¹³, Z. Wang ⁴, Z. Wang ²⁷, J. A. Ward ^54,1, M. Waterlaat⁴⁶, N. K. Watson ⁵¹, D. Websdale ⁵⁹, Y. Wei ⁶, B. D. C. Westhenry ⁵², D. J. White ⁶⁰, M. Whitehead ⁵⁷, A. R. Wiederhold ⁵⁴, D. Wiedner ¹⁷, G. Wilkinson ⁶¹, M. K. Wilkinson ⁶³, M. Williams ⁶², M. R. J. Williams ⁵⁶, R. Williams ⁵³, F. F. Wilson ⁵⁵, W. Wislicki ³⁹, M. Witek ³⁸, L. Witola ¹⁹, C. P. Wong ⁶⁵, G. Wormser ¹³, S. A. Wotton ⁵³, H. Wu ⁶⁶, J. Wu ⁸, Y. Wu ⁶, K. Wyllie ⁴⁶, S. Xian⁶⁹, Z. Xiang ⁵, Y. Xie ⁸, A. Xu ³², J. Xu ⁷, L. Xu ⁴, L. Xu ⁴, M. Xu ⁵⁴, Z. Xu ¹¹, Z. Xu ⁷, Z. Xu ⁵, D. Yang ⁴, S. Yang ⁷, X. Yang ⁶, Y. Yang ^26,h, Z. Yang ⁶, Z. Yang ⁶⁴, V. Yeroshenko ¹³, H. Yeung ⁶⁰, H. Yin ⁸, C. Y. Yu ⁶, J. Yu ⁶⁸, X. Yuan ⁵, E. Zaffaroni ⁴⁷, M. Zavertyaev ¹⁸, M. Zdybal ³⁸, M. Zeng ⁴, C. Zhang ⁶, D. Zhang ⁸, J. Zhang ⁷, L. Zhang ⁴, S. Zhang ⁶⁸, S. Zhang ⁶, Y. Zhang ⁶, Y. Z. Zhang ⁴, Y. Zhao ¹⁹, A. Zharkova ⁴¹, A. Zhelezov ¹⁹, X. Z. Zheng ⁴, Y. Zheng ⁷, T. Zhou ⁶, X. Zhou ⁸, Y. Zhou ⁷, V. Zhovkovska ⁵⁴, L. Z. Zhu ⁷, X. Zhu ⁴, X. Zhu ⁸, V. Zhukov ¹⁶, J. Zhuo ⁴⁵, Q. Zou ^5,7, D. Zuliani ^30,f, and G. Zunica ⁴⁷ (LHCb Collaboration)

¹School of Physics and Astronomy, Monash University, Melbourne, Australia
²Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
³Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
⁴Center for High Energy Physics, Tsinghua University, Beijing, China
⁵Institute Of High Energy Physics (IHEP), Beijing, China
⁶School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
⁷University of Chinese Academy of Sciences, Beijing, China
⁸Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China
⁹Consejo Nacional de Rectores (CONARE), San Jose, Costa Rica
¹⁰Université Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
¹¹Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
¹²Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
¹³Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
¹⁴Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
¹⁵LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France
¹⁶I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany
¹⁷Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
¹⁸Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
¹⁹Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
²⁰School of Physics, University College Dublin, Dublin, Ireland
²¹INFN Sezione di Bari, Bari, Italy
²²INFN Sezione di Bologna, Bologna, Italy
²³INFN Sezione di Ferrara, Ferrara, Italy
²⁴INFN Sezione di Firenze, Firenze, Italy
²⁵INFN Laboratori Nazionali di Frascati, Frascati, Italy
²⁶INFN Sezione di Genova, Genova, Italy
²⁷INFN Sezione di Milano, Milano, Italy
²⁸INFN Sezione di Milano-Bicocca, Milano, Italy
²⁹INFN Sezione di Cagliari, Monserrato, Italy
³⁰INFN Sezione di Padova, Padova, Italy
³¹INFN Sezione di Perugia, Perugia, Italy
³²INFN Sezione di Pisa, Pisa, Italy
³³INFN Sezione di Roma La Sapienza, Roma, Italy
³⁴INFN Sezione di Roma Tor Vergata, Roma, Italy
³⁵Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands
³⁶Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands
³⁷AGH—University of Krakow, Faculty of Physics and Applied Computer Science, Kraków, Poland
³⁸Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
³⁹National Center for Nuclear Research (NCBJ), Warsaw, Poland
⁴⁰Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
⁴¹Affiliated with an institute covered by a cooperation agreement with CERN
⁴²DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain
⁴³ICCUB, Universitat de Barcelona, Barcelona, Spain
⁴⁴Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
⁴⁵Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia—CSIC, Valencia, Spain
⁴⁶European Organization for Nuclear Research (CERN), Geneva, Switzerland
⁴⁷Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
⁴⁸Physik-Institut, Universität Zürich, Zürich, Switzerland
⁴⁹NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
⁵⁰Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
⁵¹University of Birmingham, Birmingham, United Kingdom
⁵²H. H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
⁵³Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
⁵⁴Department of Physics, University of Warwick, Coventry, United Kingdom
⁵⁵STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
⁵⁶School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
⁵⁷School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
⁵⁸Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
⁵⁹Imperial College London, London, United Kingdom
⁶⁰Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
⁶¹Department of Physics, University of Oxford, Oxford, United Kingdom
⁶²Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
⁶³University of Cincinnati, Cincinnati, Ohio, USA
⁶⁴University of Maryland, College Park, Maryland, USA
⁶⁵Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, USA
⁶⁶Syracuse University, Syracuse, New York, USA
⁶⁷Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil)
⁶⁸School of Physics and Electronics, Hunan University, Changsha City, China (associated with Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China)
⁶⁹Guangdong Provincial Key Laboratory of Nuclear Science, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Institute of Quantum Matter, South China Normal University, Guangzhou, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China)
⁷⁰Lanzhou University, Lanzhou, China (associated with Institute of High Energy Physics (IHEP), Beijing, China)
⁷¹School of Physics and Technology, Wuhan University, Wuhan, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China)
⁷²Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France)
⁷³Universität Bonn—Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany)
⁷⁴Eotvos Lorand University, Budapest, Hungary (associated with European Organization for Nuclear Research (CERN), Geneva, Switzerland)
⁷⁵Van Swinderen Institute, University of Groningen, Groningen, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands)
⁷⁶Universiteit Maastricht, Maastricht, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands)
⁷⁷Tadeusz Kosciuszko Cracow University of Technology, Cracow, Poland (associated with Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland)
⁷⁸Universidade da Coruña, A Coruna, Spain (associated with DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain)
⁷⁹Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden (associated with School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom)
⁸⁰University of Michigan, Ann Arbor, Michigan, USA (associated with Syracuse University, Syracuse, New York, USA)
⁸¹Departement de Physique Nucleaire (SPhN), Gif-Sur-Yvette, France

^*Full author list given at the end of the article.
^aDeceased.
^bAlso at Università di Milano Bicocca, Milano, Italy.
^cAlso at Università di Roma Tor Vergata, Roma, Italy.
^dAlso at Università di Firenze, Firenze, Italy.
^eAlso at Università di Ferrara, Ferrara, Italy.
^fAlso at Università di Padova, Padova, Italy.
^gAlso at Università di Bologna, Bologna, Italy.
^hAlso at Università di Genova, Genova, Italy.
ⁱAlso at Università degli Studi di Milano, Milano, Italy.
^jAlso at Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras.
^kAlso at Università di Cagliari, Cagliari, Italy.
^lAlso at Centro Federal de Educacão Tecnológica Celso Suckow da Fonseca, Rio De Janeiro, Brazil.
^mAlso at Università di Bari, Bari, Italy.
ⁿAlso at Università di Perugia, Perugia, Italy.
^oAlso at LIP6, Sorbonne Universite, Paris, France.
^pAlso at Universidade de Brasília, Brasília, Brazil.
^qAlso at Università di Pisa, Pisa, Italy.
^rAlso at Hangzhou Institute for Advanced Study, UCAS, Hangzhou, China.
^sAlso at Scuola Normale Superiore, Pisa, Italy.
^tAlso at School of Physics and Electronics, Henan University, Kaifeng, China.
^uAlso at Excellence Cluster ORIGINS, Munich, Germany.
^vAlso at Universita degli studi di Bergamo, Bergamo, Italy.
^wAlso at Department of Physics/Division of Particle Physics, Lund, Sweden.
^xAlso at Università della Basilicata, Potenza, Italy.
^yAlso at Università di Siena, Siena, Italy.
^zAlso at Universidad de Alcalá, Alcalá de Henares, Spain.
^aaAlso at Università di Urbino, Urbino, Italy.

PDF

Phys. Rev. D 110, L031104 – Published 22 August, 2024

DOI: https://doi.org/10.1103/PhysRevD.110.L031104

Abstract

The four decays, $Λ_{b}^{0} \to Σ_{c}^{(*) + +} D^{(*) -} K^{-}$ , are observed for the first time using proton-proton collision data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of $6 {fb}^{- 1}$ . By considering the $Λ_{b}^{0} \to Λ_{c}^{+} {\bar{D}}^{0} K^{-}$ decay as reference channel, the following branching fraction ratios are measured to be $\frac{B (Λ_{b}^{0} \to Σ_{c}^{+ +} D^{-} K^{-})}{B (Λ_{b}^{0} \to Λ_{c}^{+} {\bar{D}}^{0} K^{-})} = 0.282 \pm 0.016 \pm 0.016 \pm 0.005$ , $\frac{B (Λ_{b}^{0} \to Σ_{c}^{* + +} D^{-} K^{-})}{B (Λ_{b}^{0} \to Σ_{c}^{+ +} D^{-} K^{-})} = 0.460 \pm 0.052 \pm 0.028$ , $\frac{B (Λ_{b}^{0} \to Σ_{c}^{+ +} D^{* -} K^{-})}{B (Λ_{b}^{0} \to Σ_{c}^{+ +} D^{-} K^{-})} = 2.261 \pm 0.202 \pm 0.129 \pm 0.046$ , $\frac{B (Λ_{b}^{0} \to Σ_{c}^{* + +} D^{* -} K^{-})}{B (Λ_{b}^{0} \to Σ_{c}^{+ +} D^{-} K^{-})} = 0.896 \pm 0.137 \pm 0.066 \pm 0.018$ , where the first uncertainties are statistical, the second are systematic, and the third are due to uncertainties in the branching fractions of intermediate particle decays. These initial observations mark the beginning of pentaquark searches in these modes, with more datasets to become available following the LHCb upgrade.

Physics Subject Headings (PhySH)

Article Text

References (34)

M. Gell-Mann, A schematic model of baryons and mesons, Phys. Lett. 8, 214 (1964); G. Zweig, An ${SU}_{3}$ model for strong interaction symmetry and its breaking; Version 1, Report No. CERN-TH-401, CERN, Geneva, 1964.
M. R. Pennington, Evolving images of the proton: Hadron physics over the past 40 years, J. Phys. G 43, 054001 (2016).
M. Amaryan, History and geography of light pentaquark searches: Challenges and pitfalls, Eur. Phys. J. Plus 137, 684 (2022).
G. C. Rossi and G. Veneziano, Tetra-quarks, penta-quarks and the like: Old and new views, Nucl. Part. Phys. Proc. 312–317, 140 (2021).
R. Aaij et al. (LHCb Collaboration), Observation of $J / ψ p$ resonances consistent with pentaquark states in $Λ_{b}^{0} \to J / ψ p K^{-}$ decays, Phys. Rev. Lett. 115, 072001 (2015).
R. Aaij et al. (LHCb Collaboration), Model-independent evidence for $J / ψ p$ contributions to $Λ_{b}^{0} \to J / ψ p K^{-}$ decays, Phys. Rev. Lett. 117, 082002 (2016).
R. Aaij et al. (LHCb Collaboration), Observation of a narrow pentaquark state, $P_{c} (4312)^{+}$ , and of two-peak structure of the $P_{c} (4450)^{+}$ , Phys. Rev. Lett. 122, 222001 (2019).
S. Weinberg, Evidence that the deuteron is not an elementary particle, Phys. Rev. 137, B672 (1965).
M.-L. Du, V. Baru, F.-K. Guo, C. Hanhart, U.-G. Meißner, J. A. Oller, and Q. Wang, Revisiting the nature of the $P_{c}$ pentaquarks, J. High Energy Phys. 08 (2021) 157.
T. J. Burns and E. S. Swanson, Experimental constraints on the properties of $P_{c}$ states, Eur. Phys. J. A 58, 68 (2022).
J. He and D.-Y. Chen, Molecular states from $Σ_{c}^{(*)} {\bar{D}}^{(*)} - Λ_{c} {\bar{D}}^{(*)}$ interaction, Eur. Phys. J. C 79, 887 (2019).
Y.-W. Pan, M.-Z. Liu, and L.-S. Geng, Production rates of hidden-charm pentaquark molecules in $Λ_{b}$ decays, Phys. Rev. D 108, 114022 (2023).
X.-H. Liu, Q. Wang, and Q. Zhao, Understanding the newly observed heavy pentaquark candidates, Phys. Lett. B 757, 231 (2016).
A. A. Alves, Jr. et al. (LHCb Collaboration), The LHCb detector at the LHC, J. Instrum. 3, S08005 (2008).
LHCb Collaboration, LHCb detector performance, Int. J. Mod. Phys. A 30, 1530022 (2015).
R. Aaij et al., The LHCb trigger and its performance in 2011, J. Instrum. 8, P04022 (2013).
T. Likhomanenko, P. Ilten, E. Khairullin, A. Rogozhnikov, A. Ustyuzhanin, and M. Williams, LHCb topological trigger reoptimization, J. Phys. Conf. Ser. 664, 082025 (2015).
T. Sjöstrand, S. Mrenna, and P. Skands, A brief introduction to pythia 8.1, Comput. Phys. Commun. 178, 852 (2008); pythia 6.4 physics and manual, J. High Energy Phys. 05 (2006) 026.
I. Belyaev et al., Handling of the generation of primary events in Gauss, the LHCb simulation framework, J. Phys. Conf. Ser. 331, 032047 (2011).
D. J. Lange, The evtgen particle decay simulation package, Nucl. Instrum. Methods Phys. Res., Sect. A 462, 152 (2001).
N. Davidson, T. Przedzinski, and Z. Was, photos interface in c++: Technical and physics documentation, Comput. Phys. Commun. 199, 86 (2016).
J. Allison et al. (Geant4 Collaboration), geant4 developments and applications, IEEE Trans. Nucl. Sci. 53, 270 (2006); S. Agostinelli et al. (Geant4 Collaboration), geant4: A simulation toolkit, Nucl. Instrum. Methods Phys. Res., Sect. A 506, 250 (2003).
M. Clemencic, G. Corti, S. Easo, C. R. Jones, S. Miglioranzi, M. Pappagallo, and P. Robbe, The LHCb simulation application, Gauss: Design, evolution and experience, J. Phys. Conf. Ser. 331, 032023 (2011).
A. Poluektov, Kernel density estimation of a multidimensional efficiency profile, J. Instrum. 10, P02011 (2015).
R. L. Workman et al. (Particle Data Group), Review of particle physics, Prog. Theor. Exp. Phys. 2022, 083C01 (2022).
T. Skwarnicki, A study of the radiative cascade transitions between the Upsilon-prime and Upsilon resonances, Ph.D. thesis, Institute of Nuclear Physics, Krakow, 1986.
M. Pivk and F. R. Le Diberder, sPlot: A statistical tool to unfold data distributions, Nucl. Instrum. Methods Phys. Res., Sect. A 555, 356 (2005).
LHCb Collaboration, Measurement of the track reconstruction efficiency at LHCb, J. Instrum. 10, P02007 (2015).
L. Anderlini et al., The pidcalib package, Report No. LHCb-PUB-2016-021, 2016.
J. M. Blatt and V. F. Weisskopf, Theoretical Nuclear Physics (Springer, New York, 1952).
D. Martínez Santos and F. Dupertuis, Mass distributions marginalized over per-event errors, Nucl. Instrum. Methods Phys. Res., Sect. A 764, 150 (2014).
S. S. Wilks, The large-sample distribution of the likelihood ratio for testing composite hypotheses, Ann. Math. Stat. 9, 60 (1938).
LHCb Collaboration, Framework TDR for the LHCb upgrade: Technical design report, Report No. CERN-LHCC-2012-007, 2012.
R. Aaij et al. (LHCb Collaboration), The LHCb upgrade I, J. Instrum. 19, P05065 (2024).

Phys. Rev. D 110, L031104– Published 22 August, 2024

Vol. 110, Iss. 3 — 1 August 2024

Received 3 May 2024
Accepted 6 June 2024

DOI: https://doi.org/10.1103/PhysRevD.110.L031104

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

Physical Review D

Reuse & Permissions

Export citation

Export citation

First observation of $Λ_{b}^{0} \to Σ_{c}^{() + +} D^{() -} K^{-}$ decays

Abstract

Physics Subject Headings (PhySH)

Article Text

References (34)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation

First observation of Λb0→Σc(*)++D(*)−K− decays

Abstract

Physics Subject Headings (PhySH)

Article Text

References (34)

First observation of $Λ_{b}^{0} \to Σ_{c}^{() + +} D^{() -} K^{-}$ decays