Bottomonium spectroscopy and radiative transitions involving theχbJ(1P,2P)states atBaBar

6533b7defe1ef96bd1276571

RESEARCH PRODUCT

Bottomonium spectroscopy and radiative transitions involving theχbJ(1P,2P)states atBaBar

P. Taras M. Verderi G. J. King S. H. Robertson Herbert Koch G. Lynch J. Dorfan M. Gaspero U. Mallik J. P. Coleman K. Griessinger T. E. Latham Dmytro Kovalskyi Alessandro Pilloni D. R. Peimer X. C. Lou D. Aston R. Sacco J. J. Walsh J. P. Lees F. Anulli A. M. Eisner Giulia Casarosa G. Wormser A. Oyanguren R. Godang H. H. F. Choi V. Prasad Roberto Calabrese J. L. Ritchie P. Patteri D. N. Brown Gabriele Simi Abner Soffer T. Pulliam C. L. Davis R. F. Schwitters B. Bhuyan S. Emery J. Ocariz S. I. Serednyakov C. Bünger B. G. Fulsom T. Schroeder V. Santoro E. Grauges A. J.s. Smith Mario Giorgi R. Gorodeisky C. Touramanis G. D. Lafferty R. M. White M. Simard D. A. Roberts J. W. Gary G. Grosdidier C. Cartaro M. V. Purohit Sridhara Dasu F. Di Lodovico R. Cheaib F. De Mori A. Hafner J. Albert N. Tasneem E. M. T. Puccio R. Y. So D. J. Payne A. Jawahery O. Grünberg V. E. Blinov M. R. Convery W. J. Wisniewski Heiko Lacker G. Cibinetto J. M. Losecco E. P. Solodov T. S. Miyashita R. Andreassen Christopher West A. Stocchi R. Cenci Aidan Randle-conde Elisa Manoni L. M. Cremaldi M. J. Lee A. Zallo Andrei Salnikov D. B. Macfarlane G. Rizzo D. E. Hutchcroft E. Feltresi M. Rama T. Leddig C. Hearty S. Playfer Chunhui Chen S. Luitz K. R. Schubert M. Franco Sevilla G. Sciolla A. M. Ruland Simon Akar Claudio Campagnari H. R. Band M. Fritsch Maria Roberta Monge P. C. Kim B. Hamilton M. Ebert J. A. Mckenna Z. C. Huard H. L. Lynch Maurizio Martinelli G. Onorato W. S. Lockman M. K. Sullivan J. R. Fry J. Chauveau A. Filippi P. Roudeau D. J. Summers S. Prell James H Cochran V. Poireau A. M. Rossi B. Oberhof Joseph Izen Eleonora Luppi C. H. Cheng B. T. Meadows V. B. Golubev G. Raven E. Paoloni J. M. Roney D. G. Hitlin M. D. Sokoloff P. R. Burchat F. Forti R. J. Sobie R. Faccini L. Vitale A. Roodman R. De Sangro S. L. Wu A. Palano M. J. Lewczuk D. J. Bard J. G. Smith A. Lusiani F. Martinez-vidal Dominik Müller E. Fioravanti F. Ferrarotto A. J. Lankford Roland Waldi F. Le Diberder Nicola Neri W. H. Toki E. A. Kravchenko F. Ferroni W. R. Innes Colin Jessop R. Prepost T. S. Mattison G. R. Bonneaud V. P. Druzhinin R. C. Field Paul Fraser Harrison H. Ahmed J. D. Richman F. Simonetto D. J. Lange G. Piredda H. W. Wulsin W. Panduro Vazquez Crisostomo Sciacca Alessandro Gaz P. M. Patel A. Snyder Stephen Robert Wagner T. M. Hong G. Calderini T. J. Gershon J. Bougher G. Vasseur S. Martellotti M. Carpinelli K. T. Flood Pablo Villanueva-perez M. Lo Vetere E. O. Olaiya Florian Urs Bernlochner I. M. Nugent M. Bellis F. Palombo T. Lueck Enrico Robutti P. Ongmongkolkul D. S. Chao James D. Olsen M. Davier V. Luth R. H. Schindler C. Hast L. T. Kerth Andrea Rodriguez Perez James R. Wilson A. M. Lutz H. Briand G. A. Cowan L. Li Gioi D. Lindemann Bruce Schumm S. Passaggio G. Eigen M. Roehrken P. C. Bloom D. Gamba P. Lewis Stefan Spanier M. Morandin N. Guttman U. Uwer R. Stroili Andrei Gritsan B. Stugu G. Marchiori M. Hess S. Pacetti R. Cowan M. T. Graham P. D. Dauncey H. Neal D. W G S Leith A. G. Denig B. N. Ratcliff A. R. Buzykaev A. Beaulieu Y. B. Pan R. Kowalewski Yu. G. Kolomensky Corrado Angelini Stephen Sekula D. Lopes Pegna Douglas Wright A. Khan C. Bozzi Denis Derkach K. Honscheid R. J. Barlow Maurizio Biasini B. Malaescu M. Posocco Owen Rosser Long A. Seiden J. A. Ernst A. P. Onuchin L. Sun Alberto Cervelli Adrian John Bevan A. Calcaterra Marco Bomben Sw. Banerjee W. Dunwoodie W. T. Ford Tim Adye R. D. Kass Yu. I. Skovpen L. Piemontese E. Gabathuler F. C. Porter Martino Margoni M. Chrzaszcz C. Voß R. Contri D. Bettoni G. Finocchiaro B. Echenard M. S. Alam D. Bernard I. Garzia C. Patrignani V. Tisserand G. P. Dubois-felsmann F. F. Wilson J. Va'vra B. G. Pushpawela K. Yu. Todyshev Biplab Dey P. Sonnek S. Bettarini I. M. Peruzzi B. C. Wray D. Su M. Piccolo F. Bianchi M. Perl S. Dittrich R. Ayad G. Batignani M. Mandelkern E. Ben-haim B. Spaan M. Rotondo W. Gradl Ph Leruste N. Arnaud L. Lanceri G. De Nardo A. Adametz

subject

Quantum chromodynamics Physics Nuclear and High Energy Physics Particle physics Photon Meson 010308 nuclear & particles physics Electron–positron annihilation 01 natural sciences Nuclear physics symbols.namesake Excited state 0103 physical sciences symbols Radiative transfer High Energy Physics::Experiment 010306 general physics Spectroscopy Hamiltonian (quantum mechanics)

description

We use (121±1) million Υ(3S) and (98±1) million Υ(2S) mesons recorded by the BABAR detector at the PEP-II e^+e^− collider at SLAC to perform a study of radiative transitions involving the χ_(bJ)(1P,2P) states in exclusive decays with μ^+μ^−γγ final states. We reconstruct twelve channels in four cascades using two complementary methods. In the first we identify both signal photon candidates in the electromagnetic calorimeter (EMC), employ a calorimeter timing-based technique to reduce backgrounds, and determine branching-ratio products and fine mass splittings. These results include the best observational significance yet for the χ_(b0)(2P)→γΥ(2S) and χ_(b0)(1P)→γΥ(1S) transitions. In the second method, we identify one photon candidate in the EMC and one which has converted into an e^+e^− pair due to interaction with detector material, and we measure absolute product branching fractions. This method is particularly useful for measuring Υ(3S)→γχ_(b1,2)(1P) decays. Additionally, we provide the most up-to-date derived branching fractions, matrix elements and mass splittings for χ_b transitions in the bottomonium system. Using a new technique, we also measure the two lowest-order spin-dependent coefficients in the nonrelativistic QCD Hamiltonian.

year	journal	country	edition	language
2014-12-24	Physical Review D

https://doi.org/10.1103/physrevd.90.112010