Observation of the Radiative Decays of Υ ( 1 S ) to χ c 1

Katrenko, P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Aushev, T.; Badhrees, I.; Bahinipati, S.; Behera, P.; Beleño, C.; Bennett, J.; Bhardwaj, V.; Bhuyan, B.; Biswal, J.; Bobrov, A.; Bonvicini, G.; Bračko, M.; Campajola, M.; Cao, L.; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, H. E.; Cho, K.; Choi, S. -K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Di Capua, F.; Di Carlo, S.; Doležal, Z.; Dong, T. V.; Eidelman, S.; Epifanov, D.; Fast, J. E.; Fulsom, B. G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Golob, B.; Grzymkowska, O.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hou, W. -S.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W. W.; Jeon, H. B.; Jia, S.; Jin, Y.; Joffe, D.; Joo, K. K.; Karyan, G.; Kichimi, H.; Kim, D. Y.; Kim, K. T.; Kim, S. H.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Križan, P.; Kroeger, R.; Kuhr, T.; Lee, I. S.; Lee, S. C.; Lewis, P.; Li, Y. B.; Li Gioi, L.; Libby, J.; Lieret, K.; MacQueen, C.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moon, T. J.; Mori, T.; Mussa, R.; Nakano, E.; Nakano, T.; Nakao, M.; Nayak, M.; Nisar, N. K.; Nishida, S.; Nishimura, K.; Ono, H.; Onuki, Y.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Pang, T.; Pardi, S.; Park, C. W.; Park, H.; Park, S. -H.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Popov, V.; Prencipe, E.; Prim, M. T.; Ritter, M.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schueler, J.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M. E.; Shen, C. P.; Shiu, J. -G.; Solovieva, E.; Starič, M.; Stottler, Z. S.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Van Tonder, R.; Varner, G.; Vossen, A.; Wang, B.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Wang, X. L.; Won, E.; Yang, S. B.; Ye, H.; Yelton, J.; Yin, J. H.; Yuan, C. Z.; Yusa, Y.; Zhang, Z. P.; Zhilich, V.; Zhukova, V.

doi:10.1103/PhysRevLett.124.122001

Title: Observation of the Radiative Decays of $Υ (1 S)$ to $χ_{c 1}$

Journal Article · Thu Mar 26 00:00:00 EDT 2020 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.124.122001· OSTI ID:1606589

Katrenko, P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Aushev, T.; Badhrees, I.; Bahinipati, S.; Behera, P.; Beleño, C.; Bennett, J.; Bhardwaj, V.; Bhuyan, B.; Biswal, J.; Bobrov, A.; Bonvicini, G.; Bračko, M.; Campajola, M.; Cao, L.; Červenkov, D. more »

We report the first observation of the radiative decay of the $Υ (1 S)$ into a charmonium state. The significance of the observed signal of $Υ (1 S) \to γ χ_{c 1}$ is 6.3 standard deviations including systematics. The branching fraction is calculated to be $B [Υ (1 S) \to γ χ_{c 1}] = [{4.7}_{- 1.8}^{+ 2.4} (stat)_{- 0.5}^{+ 0.4} (sys) \times 10^{- 5}]$ . We also searched for $Υ (1 S)$ radiative decays into $χ_{c 0, 2}$ and $η_{c} (1 S, 2 S)$ , and set upper limits on their branching fractions. These results are obtained from a $24.9 {fb}^{- 1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider at a center-of-mass energy equal to the $Υ (2 S)$ mass using $Υ (1 S)$ tagging by the $Υ (2 S) \to Υ (1 S) π^{+} π^{-}$ transitions.

View Journal Article

Cite

Export

Save

Research Organization:: Univ. of Hawaii, Honolulu, HI (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); KEK - High Energy Accelerator Research Organization

Contributing Organization:: Belle Collaboration

Grant/Contract Number:: SC0010504; SC0012704; SC0009973

OSTI ID:: 1606589

Alternate ID(s):: OSTI ID: 1598846; OSTI ID: 1615581; OSTI ID: 1756636

Report Number(s):: BNL-213855-2020-JAAM; PRLTAO; 122001

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 124 Journal Issue: 12; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 2 works

Citation information provided by
Web of Science

References (16)

$Υ (1 S) \to γ f_{2}^{'} (1525)$ ; $f_{2}^{'} (1525) \to K_{S}^{0} K_{S}^{0}$ decays Besson, D.; Hogan, D. P.; Pedlar, T. K. Physical Review D, Vol. 83, Issue 3 https://doi.org/10.1103/PhysRevD.83.037101	journal	February 2011
Heavy quarkonium: progress, puzzles, and opportunities Brambilla, N.; Eidelman, S.; Heltsley, B. K. The European Physical Journal C, Vol. 71, Issue 2 https://doi.org/10.1140/epjc/s10052-010-1534-9	journal	February 2011
Review of Particle Physics Tanabashi, M.; Hagiwara, K.; Hikasa, K. Physical Review D, Vol. 98, Issue 3 https://doi.org/10.1103/PhysRevD.98.030001	journal	August 2018
Radiative decays of the $Υ (1 S)$ to a pair of charged hadrons Athar, S. B.; Avery, P.; Breva-Newell, L. Physical Review D, Vol. 73, Issue 3 https://doi.org/10.1103/PhysRevD.73.032001	journal	February 2006
Search for charmonium and charmoniumlike states in Υ ( 1 S ) radiative decays Shen, C. P.; Wang, X. L.; Yuan, C. Z. Physical Review D, Vol. 82, Issue 5 https://doi.org/10.1103/PhysRevD.82.051504	journal	September 2010
Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium Bodwin, Geoffrey T.; Braaten, Eric; Lepage, G. Peter Physical Review D, Vol. 51, Issue 3 https://doi.org/10.1103/PhysRevD.51.1125	journal	February 1995
Observation of e + e − → γ χ c 1 and search for e + e − → γ χ c 0 , γ χ c 2 , and γ η c at s near 10.6 GeV at Belle Jia, S.; Wang, X. L.; Shen, C. P. Physical Review D, Vol. 98, Issue 9 https://doi.org/10.1103/PhysRevD.98.092015	journal	November 2018
Erratum: Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium [Phys. Rev. D 51 , 1125 (1995)] Bodwin, Geoffrey T.; Braaten, Eric; Lepage, G. Peter Physical Review D, Vol. 55, Issue 9 https://doi.org/10.1103/PhysRevD.55.5853	journal	May 1997
Studies of $ξ$ (2230) in $J$ / $ψ$ Radiative Decays Bai, J. Z.; Chen, G. P.; Chen, H. F. Physical Review Letters, Vol. 76, Issue 19 https://doi.org/10.1103/PhysRevLett.76.3502	journal	May 1996
Overview of the KEKB accelerators Kurokawa, S.; Kikutani, E. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 1 https://doi.org/10.1016/S0168-9002(02)01771-0	journal	February 2003
Angular analysis of the $e^{+} e^{-} \to D^{() \pm} D^{ \mp}$ process near the open charm threshold using initial-state radiation Zhukova, V.; Pakhlova, G.; Pakhlov, P. Physical Review D, Vol. 97, Issue 1 https://doi.org/10.1103/PhysRevD.97.012002	journal	January 2018
Partial wave analysis of J/ψ→γ(K±KS0π∓) Bai, J. Z.; Ban, Y.; Bian, J. G. Physics Letters B, Vol. 476, Issue 1-2 https://doi.org/10.1016/S0370-2693(00)00115-5	journal	March 2000
The Belle detector Abashian, A.; Gotow, K.; Morgan, N. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 479, Issue 1 https://doi.org/10.1016/S0168-9002(01)02013-7	journal	February 2002
Partial wave analyses of $J / \vec{ψ} γ K^{+} K^{-}$ and $γ K_{S}^{0} K_{S}^{0}$ Bai, J. Z.; Ban, Y.; Bian, J. G. Physical Review D, Vol. 68, Issue 5 https://doi.org/10.1103/PhysRevD.68.052003	journal	September 2003
A study of J/ψ→γγV(ρ,φ) decays with the BESII detector Bai, J. Z.; Ban, Y.; Bian, J. G. Physics Letters B, Vol. 594, Issue 1-2 https://doi.org/10.1016/j.physletb.2004.04.085	journal	July 2004
Partial wave analyses of <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi><mml:mo>→</mml:mo><mml:mi>γ</mml:mi><mml:msup><mml:mi>π</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> and <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>γ</mml:mi><mml:msup><mml:mi>π</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> Ablikim, M.; Bai, J. Z.; Ban, Y. Physics Letters B, Vol. 642, Issue 5-6 https://doi.org/10.1016/j.physletb.2006.10.004	journal	November 2006

Similar Records

Measurements of the

Υ (10860)

and

Υ (11020)

resonances via

σ (e^{+} e^{-} \to Υ (n S) π^{+} π^{-})

Journal Article · Thu Jan 14 00:00:00 EST 2016 · Physical Review D · OSTI ID:1606589

Santel, D.; Kinoshita, K.; Chang, P.; +158 more

First Observation of the Hadronic Transition

Υ (4 S) \to η h_{b} (1 P)

and New Measurement of the

h_{b} (1 P)

and

η_{b} (1 S)

Parameters

Journal Article · Tue Sep 29 00:00:00 EDT 2015 · Physical Review Letters · OSTI ID:1606589

Tamponi, U.; Mussa, R.; Abdesselam, A.; +155 more

Search for

Λ_{c}^{+} \to φ p π^{0}

and branching fraction measurement of

Λ_{c}^{+} \to K^{-} π^{+} p π^{0}

Journal Article · Fri Sep 22 00:00:00 EDT 2017 · Physical Review D · OSTI ID:1606589

Pal, B.; Schwartz, A. J.; Adachi, I.; +153 more

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Leptonic
semileptonic & radiative decays
Quarkonia

Title: Observation of the Radiative Decays of Υ ( 1 S ) to χ c 1

Citation Formats

References (16)

Similar Records

Related Subjects

Title: Observation of the Radiative Decays of $Υ (1 S)$ to $χ_{c 1}$