Open Access

$B$ -jet fragmentation with $B^{\pm} \to J / ψ K^{\pm}$ decays in $\sqrt{s} = 13 TeV$ $p p$ collisions at LHCb

R. Aaij ³⁸, A. S. W. Abdelmotteleb ⁵⁸, C. Abellan Beteta ⁵², F. Abudinén ⁶⁰, T. Ackernley ⁶², A. A. Adefisoye ⁷⁰, B. Adeva ⁴⁸, M. Adinolfi ⁵⁶, P. Adlarson ⁸⁸ et al. (LHCb Collaboration)

P. Adlarson ⁸⁸, C. Agapopoulou ¹⁴, C. A. Aidala ⁹⁰, Z. Ajaltouni¹¹, S. Akar ¹¹, K. Akiba ³⁸, P. Albicocco ²⁸, J. Albrecht ^19,b, R. Aleksiejunas ⁸², F. Alessio ⁵⁰, P. Alvarez Cartelle ^57,48, R. Amalric ¹⁶, S. Amato ³, J. L. Amey ⁵⁶, Y. Amhis ¹⁴, L. An ⁶, L. Anderlini ²⁷, M. Andersson ⁵², P. Andreola ⁵², M. Andreotti ²⁶, S. Andres Estrada ⁴⁵, A. Anelli ^31,c, D. Ao ⁷, C. Arata ¹², F. Archilli ³⁷, Z. Areg ⁷⁰, M. Argenton ²⁶, S. Arguedas Cuendis ^9,50, M. Arias ⁹⁰, L. Arnone ^31,c, A. Artamonov ⁴⁴, M. Artuso ⁷⁰, E. Aslanides ¹³, R. Ataíde Da Silva⁵¹, M. Atzeni ⁶⁶, B. Audurier ¹², J. A. Authier ¹⁵, D. Bacher ⁶⁵, I. Bachiller Perea ⁵¹, S. Bachmann ²², M. Bachmayer ⁵¹, J. J. Back ⁵⁸, Z. B. Bai ⁸, P. Baladron Rodriguez ⁴⁸, V. Balagura ¹⁵, A. Balboni ²⁶, W. Baldini ²⁶, Z. Baldwin ⁸⁰, L. Balzani ¹⁹, H. Bao ⁷, J. Baptista de Souza Leite ², C. Barbero Pretel ^48,12, M. Barbetti ²⁷, I. R. Barbosa ⁷¹, R. J. Barlow ^64,a, M. Barnyakov ²⁵, S. Barsuk ¹⁴, W. Barter ⁶⁰, J. Bartz ⁷⁰, S. Bashir ⁴⁰, B. Batsukh ⁸³, P. B. Battista ¹⁴, A. Bavarchee ⁸¹, A. Bay ⁵¹, A. Beck ⁶⁶, M. Becker ¹⁹, F. Bedeschi ³⁵, I. B. Bediaga ², N. A. Behling ¹⁹, S. Belin ⁴⁸, A. Bellavista ²⁵, K. Belous ⁴⁴, I. Belov ²⁹, I. Belyaev ³⁶, G. Benane ¹³, G. Bencivenni ²⁸, E. Ben-Haim ¹⁶, A. Berezhnoy ⁴⁴, R. Bernet ⁵², A. Bertolin ³³, F. Betti ⁶⁰, J. Bex ⁵⁷, O. Bezshyyko ⁸⁹, S. Bhattacharya ⁸¹, M. S. Bieker ¹⁸, N. V. Biesuz ²⁶, A. Biolchini ³⁸, M. Birch ⁶³, F. C. R. Bishop ¹⁰, A. Bitadze ⁶⁴, A. Bizzeti ^27,d, T. Blake ^58,e, F. Blanc ⁵¹, J. E. Blank ¹⁹, S. Blusk ⁷⁰, V. Bocharnikov ⁴⁴, J. A. Boelhauve ¹⁹, O. Boente Garcia ⁵⁰, T. Boettcher ⁹¹, A. Bohare ⁶⁰, A. Boldyrev ⁴⁴, C. Bolognani ⁸⁵, R. Bolzonella ^26,f, R. B. Bonacci ¹, N. Bondar ^44,50, A. Bordelius ⁵⁰, F. Borgato ^33,50, S. Borghi ⁶⁴, M. Borsato ^31,c, J. T. Borsuk ⁸⁷, E. Bottalico ⁶², S. A. Bouchiba ⁵¹, M. Bovill ⁶⁵, T. J. V. Bowcock ⁶², A. Boyer ⁵⁰, C. Bozzi ²⁶, J. D. Brandenburg ⁹², A. Brea Rodriguez ⁵¹, N. Breer ¹⁹, J. Brodzicka ⁴¹, J. Brown ⁶², D. Brundu ³², E. Buchanan ⁶⁰, M. Burgos Marcos ⁸⁵, C. Burr ⁵⁰, C. Buti ²⁷, J. S. Butter ⁵⁷, J. Buytaert ⁵⁰, W. Byczynski ⁵⁰, S. Cadeddu ³², H. Cai ⁷⁶, Y. Cai ⁵, A. Caillet ¹⁶, R. Calabrese ^26,f, L. Calefice ⁴⁶, M. Calvi ^31,c, M. Calvo Gomez ⁴⁷, P. Camargo Magalhaes ^2,g, J. I. Cambon Bouzas ⁴⁸, P. Campana ²⁸, A. C. Campos ³, A. F. Campoverde Quezada ⁷, Y. Cao⁶, S. Capelli ³¹, M. Caporale ²⁵, L. Capriotti ²⁶, R. Caravaca-Mora ⁹, A. Carbone ^25,h, L. Carcedo Salgado ⁴⁸, R. Cardinale ^29,i, A. Cardini ³², P. Carniti ³¹, L. Carus ²², A. Casais Vidal ⁶⁶, R. Caspary ²², G. Casse ⁶², M. Cattaneo ⁵⁰, G. Cavallero ²⁶, V. Cavallini ^26,f, S. Celani ⁵⁰, I. Celestino ^35,j, S. Cesare ^50,k, A. J. Chadwick ⁶², I. Chahrour ⁹⁰, H. Chang ^4,l, M. Charles ¹⁶, Ph. Charpentier ⁵⁰, E. Chatzianagnostou ³⁸, R. Cheaib ⁸¹, M. Chefdeville ¹⁰, C. Chen ⁵⁸, J. Chen ⁵¹, S. Chen ⁵, Z. Chen ⁷, A. Chen Hu ⁶³, M. Cherif ¹², A. Chernov ⁴¹, S. Chernyshenko ⁵⁴, X. Chiotopoulos ⁸⁵, G. Chizhik ¹, V. Chobanova ⁴⁵, M. 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De Simone ²⁸, F. De Vellis ¹⁹, J. A. de Vries ⁸⁵, F. Debernardis ²⁴, D. Decamp ¹⁰, S. Dekkers ¹, L. Del Buono ¹⁶, B. Delaney ⁶⁶, J. Deng ⁸, V. Denysenko ⁵², O. Deschamps ¹¹, F. Dettori ^32,n, B. Dey ⁸¹, P. Di Nezza ²⁸, I. Diachkov ⁴⁴, S. Ding ⁷⁰, Y. Ding ⁵¹, L. Dittmann ²², A. D. Docheva ⁶¹, A. Doheny ⁵⁸, C. Dong ^4,l, F. Dordei ³², A. C. dos Reis ², A. D. Dowling ⁷⁰, L. Dreyfus ¹³, W. Duan ⁷⁴, P. Duda ⁸⁷, L. Dufour ⁵¹, V. Duk ³⁴, P. Durante ⁵⁰, M. M. Duras ⁸⁷, J. M. Durham ⁶⁹, O. D. Durmus ⁸¹, A. Dziurda ⁴¹, A. Dzyuba ⁴⁴, S. Easo ⁵⁹, E. Eckstein ¹⁸, U. Egede ¹, A. Egorychev ⁴⁴, V. Egorychev ⁴⁴, S. Eisenhardt ⁶⁰, E. Ejopu ⁶², L. Eklund ⁸⁸, M. Elashri ⁶⁷, D. Elizondo Blanco ⁹, J. Ellbracht ¹⁹, S. Ely ⁶³, A. Ene ⁴³, J. Eschle ⁷⁰, T. Evans ³⁸, F. Fabiano ¹⁴, S. Faghih ⁶⁷, L. N. Falcao ^31,c, B. Fang ⁷, R. Fantechi ³⁵, L. Fantini ^34,p, M. Faria ⁵¹, K. Farmer ⁶⁰, F. Fassin ^84,38, D. Fazzini ^31,c, L. Felkowski ⁸⁷, C. Feng⁶, M. Feng ^5,7, A. Fernandez Casani ⁴⁹, M. Fernandez Gomez ⁴⁸, A. 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Minotti ^31,c, E. Minucci ²⁸, T. Miralles ¹¹, B. Mitreska ⁶⁴, D. S. Mitzel ¹⁹, R. Mocanu ⁴³, A. Modak ⁵⁹, L. Moeser ¹⁹, R. D. Moise ¹⁷, E. F. Molina Cardenas ⁹⁰, T. Mombächer ⁶⁷, M. Monk ⁵⁷, T. Monnard ⁵¹, S. Monteil ¹¹, A. Morcillo Gomez ⁴⁸, G. Morello ²⁸, M. J. Morello ^35,j, M. P. Morgenthaler ²², A. Moro ^31,c, J. Moron ⁴⁰, W. Morren ³⁸, A. B. Morris ^82,50, A. G. Morris ¹³, R. Mountain ⁷⁰, Z. Mu ⁶, E. Muhammad ⁵⁸, F. Muheim ⁶⁰, M. Mulder ¹⁹, K. Müller ⁵², F. Muñoz-Rojas ⁹, V. Mytrochenko ⁵³, P. Naik ⁶², T. Nakada ⁵¹, R. Nandakumar ⁵⁹, G. Napoletano ⁵¹, I. Nasteva ³, M. Needham ⁶⁰, E. Nekrasova ⁴⁴, N. Neri ^30,k, S. Neubert ¹⁸, N. Neufeld ⁵⁰, P. Neustroev⁴⁴, J. Nicolini ⁵⁰, D. Nicotra ⁸⁵, E. M. Niel ¹⁵, N. Nikitin ⁴⁴, L. Nisi ¹⁹, Q. Niu ⁷⁵, B. K. Njoki ⁵⁰, P. Nogarolli ³, P. Nogga ¹⁸, C. Normand ⁴⁸, J. Novoa Fernandez ⁴⁸, G. Nowak ⁶⁷, C. Nunez ⁹⁰, H. N. Nur ⁶¹, A. Oblakowska-Mucha ⁴⁰, V. Obraztsov ⁴⁴, T. Oeser ¹⁷, A. Okhotnikov⁴⁴, O. Okhrimenko ⁵⁴, R. Oldeman ^32,n, F. 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Sciuccati ⁵⁰, G. Scriven ⁸⁵, I. Segal ⁸⁰, S. Sellam ⁴⁸, A. Semennikov ⁴⁴, T. Senger ⁵², M. Senghi Soares ³⁹, A. Sergi ^29,i, N. Serra ⁵², L. Sestini ²⁷, B. Sevilla Sanjuan ⁴⁷, Y. Shang ⁶, D. M. Shangase ⁹⁰, M. Shapkin ⁴⁴, R. S. Sharma ⁷⁰, L. Shchutska ⁵¹, T. Shears ⁶², J. Shen⁶, Z. Shen ³⁸, S. Sheng ⁵¹, V. Shevchenko ⁴⁴, B. Shi ⁷, J. Shi ⁵⁷, Q. Shi ⁷, W. S. Shi ⁷⁴, E. Shmanin ²⁵, R. Shorkin ⁴⁴, R. Silva Coutinho ², G. Simi ^33,t, S. Simone ^24,o, M. Singha ⁸¹, I. Siral ⁵¹, N. Skidmore ⁵⁸, T. Skwarnicki ⁷⁰, M. W. Slater ⁵⁵, E. Smith ⁶⁶, M. Smith ⁶³, L. Soares Lavra ⁶⁰, M. D. Sokoloff ⁶⁷, F. J. P. Soler ⁶¹, A. Solomin ⁵⁶, A. Solovev ⁴⁴, K. Solovieva ²⁰, N. S. Sommerfeld ¹⁸, R. Song ¹, Y. Song ⁵¹, Y. Song ^4,l, Y. S. Song ⁶, F. L. Souza De Almeida ⁴⁶, B. Souza De Paula ³, K. M. Sowa ⁴⁰, E. Spadaro Norella ^29,i, E. Spedicato ²⁵, J. G. Speer ¹⁹, P. Spradlin ⁶¹, F. Stagni ⁵⁰, M. Stahl ⁸⁰, S. Stahl ⁵⁰, S. Stanislaus ⁶⁵, M. Stefaniak ⁹², O. Steinkamp ⁵², D. Strekalina ⁴⁴, Y. Su ⁷, F. Suljik ⁶⁵, J. Sun ³², J. Sun ⁶⁴, L. Sun ⁷⁶, D. Sundfeld ², W. Sutcliffe ⁵², P. Svihra ⁷⁹, V. Svintozelskyi ⁴⁹, K. Swientek ⁴⁰, F. Swystun ⁵⁷, A. Szabelski ⁴², T. Szumlak ⁴⁰, Y. Tan ⁴, Y. Tang ⁷⁶, Y. T. Tang ⁷, M. D. Tat ²², J. A. Teijeiro Jimenez ⁴⁸, A. Terentev ⁴⁴, F. Terzuoli ^35,v, F. Teubert ⁵⁰, E. Thomas ⁵⁰, D. J. D. Thompson ⁵⁵, A. R. Thomson-Strong ⁶⁰, H. Tilquin ⁶³, V. Tisserand ¹¹, S. T’Jampens ¹⁰, M. Tobin ^5,50, T. T. Todorov ²⁰, L. Tomassetti ^26,f, G. Tonani ³⁰, X. Tong ⁶, T. Tork ³⁰, L. Toscano ¹⁹, D. Y. Tou ^4,l, C. Trippl ⁴⁷, G. Tuci ²², N. Tuning ³⁸, L. H. Uecker ²², A. Ukleja ⁴⁰, D. J. Unverzagt ²², A. Upadhyay ⁵⁰, B. Urbach ⁶⁰, A. Usachov ³⁸, A. Ustyuzhanin ⁴⁴, U. Uwer ²², V. Vagnoni ^25,50, A. Vaitkevicius ⁸², V. Valcarce Cadenas ⁴⁸, G. Valenti ²⁵, N. Valls Canudas ⁵⁰, J. van Eldik ⁵⁰, H. Van Hecke ⁶⁹, E. van Herwijnen ⁶³, C. B. Van Hulse ^48,w, R. Van Laak ⁵¹, M. van Veghel ⁸⁵, G. Vasquez ⁵², R. Vazquez Gomez ⁴⁶, P. Vazquez Regueiro ⁴⁸, C. Vázquez Sierra ⁴⁵, S. Vecchi ²⁶, J. Velilla Serna ⁴⁹, J. J. Velthuis ⁵⁶, M. Veltri ^27,x, A. Venkateswaran ⁵¹, M. Verdoglia ³², M. Vesterinen ⁵⁸, W. Vetens ⁷⁰, D. Vico Benet ⁶⁵, P. Vidrier Villalba ⁴⁶, M. Vieites Diaz ⁴⁸, X. Vilasis-Cardona ⁴⁷, E. Vilella Figueras ⁶², A. Villa ²⁵, P. Vincent ¹⁶, B. Vivacqua ³, F. C. Volle ⁵⁵, D. vom Bruch ¹³, N. Voropaev ⁴⁴, K. Vos ⁸⁵, C. Vrahas ⁶⁰, J. Wagner ¹⁹, J. Walsh ³⁵, E. J. Walton ¹, G. Wan ⁶, A. Wang ⁷, B. Wang ⁵, C. Wang ²², G. Wang ⁸, H. Wang ⁷⁵, J. Wang ⁷, J. Wang ⁵, J. Wang ^4,l, J. Wang ⁷⁶, M. Wang ⁵⁰, N. W. Wang ⁷, R. Wang ⁵⁶, X. Wang ⁸, X. Wang ⁷⁴, X. W. Wang ⁶³, Y. Wang ⁷⁷, Y. Wang ⁶, Y. H. Wang ⁷⁵, Z. Wang ¹⁴, Z. Wang ³⁰, J. A. Ward ^58,1, M. Waterlaat ⁵⁰, N. K. Watson ⁵⁵, D. Websdale ⁶³, Y. Wei ⁶, Z. Weida ⁷, J. Wendel ⁴⁵, B. D. C. Westhenry ⁵⁶, C. White ⁵⁷, M. Whitehead ⁶¹, E. Whiter ⁵⁵, A. R. Wiederhold ⁶⁴, D. Wiedner ¹⁹, M. A. Wiegertjes ³⁸, C. Wild ⁶⁵, G. Wilkinson ^65,50, M. K. Wilkinson ⁶⁷, M. Williams ⁶⁶, M. J. Williams ⁵⁰, M. R. J. Williams ⁶⁰, R. Williams ⁵⁷, S. Williams ⁵⁶, Z. Williams ⁵⁶, F. F. Wilson ⁵⁹, M. Winn ¹², W. Wislicki ⁴², M. Witek ⁴¹, L. Witola ¹⁹, T. Wolf ²², E. Wood ⁵⁷, G. Wormser ¹⁴, S. A. Wotton ⁵⁷, H. Wu ⁷⁰, J. Wu ⁸, X. Wu ⁷⁶, Y. Wu ^6,57, Z. Wu ⁷, K. Wyllie ⁵⁰, S. Xian ⁷⁴, Z. Xiang ⁵, Y. Xie ⁸, T. X. Xing ³⁰, A. Xu ^35,j, L. Xu ^4,l, M. Xu ⁵⁰, R. Xu⁹⁰, Z. Xu ⁵⁰, Z. Xu ⁷, Z. Xu ⁵, S. Yadav ²⁶, K. Yang ⁶³, X. Yang ⁶, Y. Yang ⁷, Y. Yang ⁸¹, Z. Yang ⁶, Z. Yang ⁴, H. Yeung ⁶⁴, H. Yin ⁸, X. Yin ⁷, C. Y. Yu ⁶, J. Yu ⁷³, X. Yuan ⁵, Y Yuan^5,7, J. A. Zamora Saa ⁷², M. Zavertyaev ²¹, M. Zdybal ⁴¹, F. Zenesini ²⁵, C. Zeng ^5,7, M. Zeng ^4,l, S. H. Zeng⁵⁶, C. Zhang ⁶, D. Zhang ⁸, J. Zhang ⁷, L. Zhang ^4,l, R. Zhang ⁸, S. Zhang ⁶⁵, S. L. Zhang ⁷³, Y. Zhang ⁶, Y. Z. Zhang ^4,l, Z. Zhang ^4,l, Y. Zhao ²², A. Zhelezov ²², S. Z. Zheng ⁶, X. Z. Zheng ^4,l, Y. Zheng ⁷, T. Zhou ⁶, X. Zhou ⁸, V. Zhovkovska ⁵⁸, L. Z. Zhu ⁶⁰, X. Zhu ^4,l, X. Zhu ⁸, Y. Zhu ¹⁷, V. Zhukov ¹⁷, J. Zhuo ⁴⁹, D. Zuliani ^33,t, and G. Zunica ²⁸ (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
⁴Department of Engineering 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
¹²Université Paris-Saclay, Centre d’Etudes de Saclay (CEA), IRFU, Gif-Sur-Yvette, France
¹³Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
¹⁴Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
¹⁵Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
¹⁶Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Sorbonne Université, CNRS/IN2P3, Paris, France
¹⁷I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany
¹⁸Universität Bonn—Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany
¹⁹Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
²⁰Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
²¹Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
²²Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
²³School of Physics, University College Dublin, Dublin, Ireland
²⁴INFN Sezione di Bari, Bari, Italy
²⁵INFN Sezione di Bologna, Bologna, Italy
²⁶INFN Sezione di Ferrara, Ferrara, Italy
²⁷INFN Sezione di Firenze, Firenze, Italy
²⁸INFN Laboratori Nazionali di Frascati, Frascati, Italy
²⁹INFN Sezione di Genova, Genova, Italy
³⁰INFN Sezione di Milano, Milano, Italy
³¹INFN Sezione di Milano-Bicocca, Milano, Italy
³²INFN Sezione di Cagliari, Monserrato, Italy
³³INFN Sezione di Padova, Padova, Italy
³⁴INFN Sezione di Perugia, Perugia, Italy
³⁵INFN Sezione di Pisa, Pisa, Italy
³⁶INFN Sezione di Roma La Sapienza, Roma, Italy
³⁷INFN Sezione di Roma Tor Vergata, Roma, Italy
³⁸Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands
³⁹Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands
⁴⁰AGH—University of Krakow, Faculty of Physics and Applied Computer Science, Kraków, Poland
⁴¹Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
⁴²National Center for Nuclear Research (NCBJ), Warsaw, Poland
⁴³Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
⁴⁴Authors affiliated with an institute formerly covered by a cooperation agreement with CERN
⁴⁵Universidade da Coruña, A Coruña, Spain
⁴⁶ICCUB, Universitat de Barcelona, Barcelona, Spain
⁴⁷La Salle, Universitat Ramon Llull, Barcelona, Spain
⁴⁸Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
⁴⁹Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia—CSIC, Valencia, Spain
⁵⁰European Organization for Nuclear Research (CERN), Geneva, Switzerland
⁵¹Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
⁵²Physik-Institut, Universität Zürich, Zürich, Switzerland
⁵³NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
⁵⁴Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
⁵⁵School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
⁵⁶H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
⁵⁷Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
⁵⁸Department of Physics, University of Warwick, Coventry, United Kingdom
⁵⁹STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
⁶⁰School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
⁶¹School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
⁶²Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
⁶³Imperial College London, London, United Kingdom
⁶⁴Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
⁶⁵Department of Physics, University of Oxford, Oxford, United Kingdom
⁶⁶Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
⁶⁷University of Cincinnati, Cincinnati, Ohio, USA
⁶⁸University of Maryland, College Park, Maryland, USA
⁶⁹Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, USA
⁷⁰Syracuse University, Syracuse, NewYork, USA
⁷¹Pontifícia 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)
⁷²Universidad Andres Bello, Santiago, Chile (associated with Physik-Institut, Universität Zürich, Zürich, Switzerland)
⁷³School of Physics and Electronics, Hunan University, Changsha City, China (associated with Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China)
⁷⁴State Key Laboratory of Nuclear Physics and Technology, South China Normal University, Guangzhou, China (associated with Department of Engineering Physics, Tsinghua University, Beijing, China)
⁷⁵Lanzhou University, Lanzhou, China (associated with Institute Of High Energy Physics (IHEP), Beijing, China)
⁷⁶School of Physics and Technology, Wuhan University, Wuhan, China (associated with Department of Engineering Physics, Tsinghua University, Beijing, China)
⁷⁷Henan Normal University, Xinxiang, China (associated with Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China)
⁷⁸Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Sorbonne Université, CNRS/IN2P3, Paris, France)
⁷⁹Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic (associated with Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom)
⁸⁰Ruhr Universitaet Bochum, Fakultaet f. Physik und Astronomie, Bochum, Germany (associated with Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany)
⁸¹Eotvos Lorand University, Budapest, Hungary (associated with European Organization for Nuclear Research (CERN), Geneva, Switzerland)
⁸²Faculty of Physics, Vilnius University, Vilnius, Lithuania (associated with Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany)
⁸³Institute of Physics and Technology, Ulan Bator, Mongolia (associated with Institute Of High Energy Physics (IHEP), Beijing, China)
⁸⁴Van Swinderen Institute, University of Groningen, Groningen, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands)
⁸⁵Universiteit Maastricht, Maastricht, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands)
⁸⁶Universidad de Ingeniería y Tecnología (UTEC), Lima, Peru (associated with Massachusetts Institute of Technology, Cambridge, Massachusetts, USA)
⁸⁷Tadeusz Kosciuszko Cracow University of Technology, Cracow, Poland (associated with Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland)
⁸⁸Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden (associated with School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom)
⁸⁹Taras Schevchenko University of Kyiv, Faculty of Physics, Kyiv, Ukraine (associated with Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France)
⁹⁰University of Michigan, Ann Arbor, Michigan, USA (associated with Syracuse University, Syracuse, NewYork, USA)
⁹¹Indiana University, Bloomington, USA (associated with Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, USA)
⁹²Ohio State University, Columbus, USA (associated with Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, USA)

^*Full author list given at the end of the article.
^aDeceased.
^bAlso at Lamarr Institute for Machine Learning and Artificial Intelligence, Dortmund, Germany.
^cAlso at Università degli Studi di Milano-Bicocca, Milano, Italy.
^dAlso at Università di Modena e Reggio Emilia, Modena, Italy.
^eAlso at Department of Physics and Astronomy, University of Victoria, Victoria, Canada.
^fAlso at Università di Ferrara, Ferrara, Italy.
^gAlso at Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil.
^hAlso at Università di Bologna, Bologna, Italy.
ⁱAlso at Università di Genova, Genova, Italy.
^jAlso at Scuola Normale Superiore, Pisa, Italy.
^kAlso at Università degli Studi di Milano, Milano, Italy.
^lAlso at Center for High Energy Physics, Tsinghua University, Beijing, China.
^mAlso at Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras.
ⁿAlso at Università di Cagliari, Cagliari, Italy.
^oAlso at Università di Bari, Bari, Italy.
^pAlso at Università di Perugia, Perugia, Italy.
^qAlso at LIP6, Sorbonne Université, Paris, France.
^rAlso at Hangzhou Institute for Advanced Study, UCAS, Hangzhou, China.
^sAlso at Università di Pisa, Pisa, Italy.
^tAlso at Università di Padova, Padova, Italy.
^uAlso at Università di Bergamo, Bergamo, Italy.
^vAlso at Università di Siena, Siena, Italy.
^wAlso at Universidad de Alcalá, Alcalá de Henares, Spain.
^xAlso at Università di Urbino, Urbino, Italy.

PDF

Phys. Rev. D 113, 112006 – Published 12 June, 2026

DOI: https://doi.org/10.1103/3d7r-c3y4

Abstract

The collinear and transverse-momentum-dependent jet fragmentation function and the radial profile for $B^{\pm}$ mesons in jets are measured. The $B^{\pm}$ mesons are reconstructed through the $J / ψ (\to μ^{+} μ^{-}) K^{\pm}$ decay channel using proton-proton collision data collected during 2016–2018 with the LHCb detector at a center-of-mass (c.m.) energy of $\sqrt{s} = 13 TeV$ , corresponding to an integrated luminosity of $5.4 {fb}^{- 1}$ . The results complement recent measurements of jet fragmentation functions for heavy-flavor hadrons and suggest a growing contribution of gluon fragmentation to $B^{\pm}$ mesons as the jet transverse momentum increases.

Physics Subject Headings (PhySH)

Article Text

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Phys. Rev. D 113, 112006– Published 12 June, 2026

Vol. 113, Iss. 11 — 1 June 2026

Received 24 March 2026
Accepted 6 May 2026

DOI: https://doi.org/10.1103/3d7r-c3y4

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.

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$B$ -jet fragmentation with $B^{\pm} \to J / ψ K^{\pm}$ decays in $\sqrt{s} = 13 TeV$ $p p$ collisions at LHCb

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B-jet fragmentation with B±→J/ψK± decays in s=13 TeV pp collisions at LHCb

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$B$ -jet fragmentation with $B^{\pm} \to J / ψ K^{\pm}$ decays in $\sqrt{s} = 13 TeV$ $p p$ collisions at LHCb