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Study of $χ_{b 1, 2} (2 P) \to ω ϒ (1 S)$ transitions in $ϒ (3 S) \to γ χ_{b 1, 2} (2 P)$ decays at BABAR

J. P. Lees , V. Poireau , V. Tisserand , E. Grauges , A. Palano ^†, G. Eigen , D. N. Brown , Yu. G. Kolomensky , M. Fritsch et al. (BABAR Collaboration)

M. Fritsch , H. Koch ^*, R. Cheaib , C. Hearty , T. S. Mattison , J. A. McKenna , R. Y. So , V. E. Blinov , A. R. Buzykaev , V. P. Druzhinin , E. A. Kozyrev , E. A. Kravchenko , S. I. Serednyakov , Yu. I. Skovpen , E. P. Solodov , K. Yu. Todyshev , A. J. Lankford , B. Dey , J. W. Gary , O. Long , A. M. Eisner , W. S. Lockman , W. Panduro Vazquez , D. S. Chao , C. H. Cheng , B. Echenard , K. T. Flood , D. G. Hitlin , Y. Li , D. X. Lin , S. Middleton , T. S. Miyashita , P. Ongmongkolkul , J. Oyang , F. C. Porter , M. Röhrken, B. T. Meadows , M. D. Sokoloff , J. G. Smith , S. R. Wagner , D. Bernard , M. Verderi , D. Bettoni , C. Bozzi , R. Calabrese , G. Cibinetto , E. Fioravanti , I. Garzia , E. Luppi , V. Santoro , A. Calcaterra , R. de Sangro , G. Finocchiaro , S. Martellotti , P. Patteri , I. M. Peruzzi , M. Piccolo , M. Rotondo , A. Zallo , S. Passaggio , C. Patrignani , B. J. Shuve , H. M. Lacker , B. Bhuyan , U. Mallik ^*, C. Chen , J. Cochran , S. Prell , A. V. Gritsan , N. Arnaud , M. Davier , F. Le Diberder , A. M. Lutz , G. Wormser , D. J. Lange , D. M. Wright , J. P. Coleman , D. E. Hutchcroft , D. J. Payne , C. Touramanis , A. J. Bevan , M. Bona , F. Di Lodovico , G. Cowan , Sw. Banerjee , D. N. Brown , C. L. Davis , A. G. Denig , W. Gradl , K. Griessinger , A. Hafner , K. R. Schubert , R. J. Barlow ^*, G. D. Lafferty , R. Cenci , A. Jawahery , D. A. Roberts , R. Cowan , S. H. Robertson , R. M. Seddon , N. Neri , F. Palombo ^*, L. Cremaldi , R. Godang , D. J. Summers ^*, G. De Nardo , C. Sciacca , C. P. Jessop , J. M. LoSecco , K. Honscheid , A. Gaz , M. Margoni , G. Simi , F. Simonetto , R. Stroili , S. Akar , E. Ben-Haim , M. Bomben , G. R. Bonneaud , G. Calderini , J. Chauveau , G. Marchiori , J. Ocariz , M. Biasini , E. Manoni , A. Rossi , G. Batignani , S. Bettarini , M. Carpinelli , G. Casarosa , M. Chrzaszcz , F. Forti , M. A. Giorgi , A. Lusiani , B. Oberhof , E. Paoloni , M. Rama , G. Rizzo , J. J. Walsh , L. Zani , A. J. S. Smith , F. Anulli , R. Faccini , F. Ferrarotto , F. Ferroni , A. Pilloni , C. Bünger, S. Dittrich , O. Grünberg, T. Leddig , C. Voß , R. Waldi , T. Adye , F. F. Wilson , S. Emery , G. Vasseur , D. Aston , C. Cartaro , M. R. Convery , W. Dunwoodie ^*, M. Ebert , R. C. Field , B. G. Fulsom , M. T. Graham , C. Hast , P. Kim , S. Luitz , D. B. MacFarlane , D. R. Muller , H. Neal , B. N. Ratcliff , A. Roodman , M. K. Sullivan , J. Va’vra , W. J. Wisniewski , M. V. Purohit , J. R. Wilson , S. J. Sekula , H. Ahmed , N. Tasneem , M. Bellis , P. R. Burchat , E. M. T. Puccio , J. A. Ernst , R. Gorodeisky , N. Guttman , D. R. Peimer , A. Soffer , S. M. Spanier , J. L. Ritchie , J. M. Izen , X. C. Lou , F. Bianchi , F. De Mori , A. Filippi , L. Lanceri , L. Vitale , F. Martinez-Vidal , A. Oyanguren , J. Albert , A. Beaulieu , F. U. Bernlochner , G. J. King , R. Kowalewski , T. Lueck , C. Miller , I. M. Nugent , J. M. Roney , R. J. Sobie , T. J. Gershon , P. F. Harrison , T. E. Latham , and S. L. Wu (BABAR Collaboration)

^*Deceased.
^†Contact author: antimo.palano@ba.infn.it

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Phys. Rev. D 113, 052010 – Published 26 March, 2026

DOI: https://doi.org/10.1103/sn5h-c2t9

Abstract

Results are presented on $χ_{b 1, 2} (2 P) \to ω ϒ (1 S)$ transitions from $e^{+} e^{-} \to ϒ (3 S) \to γ χ_{b 1, 2} (2 P)$ decays. The data were collected with the BABAR detector at the PEP-II asymmetric-energy $e^{+} e^{-}$ collider at SLAC. The integrated luminosity of the data sample is $28.0 {fb}^{- 1}$ , corresponding to $121.3 \times 10^{6}$ $ϒ (3 S)$ decays. Signals of $χ_{b 1, 2} (2 P)$ are observed over a negligible background. Improved precision measurements of branching fractions are obtained. First measurements of the $χ_{b 1, 2} (2 P)$ angular distributions are performed. No evidence is found for the presence of a $χ_{b 0} (2 P) \to ω ϒ (1 S)$ decay mode.

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References (23)

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Phys. Rev. D 113, 052010– Published 26 March, 2026

Vol. 113, Iss. 5 — 1 March 2026

Received 10 December 2025
Accepted 5 March 2026

DOI: https://doi.org/10.1103/sn5h-c2t9

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.

Published by the American Physical Society

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Study of $χ_{b 1, 2} (2 P) \to ω ϒ (1 S)$ transitions in $ϒ (3 S) \to γ χ_{b 1, 2} (2 P)$ decays at BABAR

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Study of χb1,2(2P)→ωϒ(1S) transitions in ϒ(3S)→γχb1,2(2P) decays at BABAR

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Study of $χ_{b 1, 2} (2 P) \to ω ϒ (1 S)$ transitions in $ϒ (3 S) \to γ χ_{b 1, 2} (2 P)$ decays at BABAR