Study of χbJ(nP ) → ωΥ(1S) at Belle

Authors

  • Zachary Stottler Virginia Tech

DOI:

https://doi.org/10.31349/SuplRevMexFis.3.0308072

Keywords:

Bottomonium at Belle, nonrelativistic quantum chromodynamics

Abstract

We report preliminary results from a study of hadronic transitions of the χbJ (nP) states of bottomonium at Belle. The P-wave states are reconstructed in transitions to the Υ(1S) with the emission of an ω meson. The transitions of the n = 2 triplet states provide a unique laboratory in which to study nonrelativistic quantum chromodynamics, as the kinematic threshold for production of an ω and Υ(1S) lies between the J = 0 and J = 1 states. A search for the χbJ (3P) states is also reported.

References

A.J. Bevan, et al., The Physics of the B Factories. Eur. Phys. J. C 74 (2014) 3026, https://doi.org/10.1140/epjc/s10052-014-3026-9.

K.-F. Chen et al. (Belle Collaboration), Observation of Anomalous Υ(1S)π +π − and Υ(2S)π +π − Production near the Υ(5S) Resonance, Phys. Rev. Lett. 100 (2008) 112001, https://doi.org/10.1103/PhysRevLett.100.112001.

B. Aubert et al. (BaBar Collaboration), Study of hadronic transitions between Υ states and observation of Υ(4S) → ηΥ(1S) decay, Phys. Rev. D 78 (2008) 112002, https://doi.org/10.1103/PhysRevD.78.112002.

P. del Amo Sanchez et al. (BaBar Collaboration), Evidence for the decay X(3872) → J/ψω, Phys. Rev. D 82 (2010) 011101, https://doi.org/10.1103/PhysRevD.82.011101.

J. P. Lees et al. (BaBar Collaboration), Study of Υ(3S, 2S) → ηΥ(1S) and Υ(3S, 2S) → π +π −Υ(1S) hadronic transitions, Phys. Rev. D 84 (2011) 092003, https://doi.org/10.1103/PhysRevD.84.092003.

I. Adachi et al. (Belle Collaboration), First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P), Phys. Rev. Lett. 108 (2012) 032001, https://doi.org/10.1103/PhysRevLett.108.032001.

U. Tamponi et al. (Belle Collaboration), First Observation of the Hadronic Transition Υ(4S) → ηhb(1P) and New Measurement of the hb(1P) and ηb(1P) Parameters, Phys. Rev. Lett. 115 (2015) 142001, https://doi.org/10.1103/PhysRevLett.115.142001.

E. Guido et al. (Belle Collaboration), Study of η and dipion transitions in Υ(4S) decays to lower bottomonia, Phys. Rev. D 96 (2017) 052005, https://doi.org/10.1103/PhysRevD.96.052005.

E. Guido et al. (Belle Collaboration), Observation of Υ(4S) → η 0Υ(1S), Phys. Rev. Lett. 121 (2018) 062001, https://doi.org/10.1103/PhysRevLett.121.062001.

P. Oskin et al. (Belle Collaboration), Search for transitions from Υ(4S) and Υ(5S) to ηb(1S) and ηb(2S) with emission of an ω meson, Phys. Rev. D 102 (2020) 092011, https://doi.org/10.1103/PhysRevD.102.092011.

M. Ablikim et al. (BESIII Collaboration), Study of e +e − → γωJ/ψ an the Observation of X(3872) → ωJ/ψ, Phys. Rev. Lett. 122 (2019) 232002, https://doi.org/10.1103/PhysRevLett.122.232002.

N. Brambilla et al., QCD and strongly coupled gauge theories: challenges and perspectives, Eur. Phys. J. C 74 (2014) 2981, https://doi.org/10.1140/epjc/s10052-014-2981-5.

P. Zyla et al. (Particle Data Group), Review of Particle Physics, PTEP 2020 (2020) 083C01, https://doi.org/10.1093/ptep/ptaa104.

S.-K. Choi et al. (Belle Collaboration), Observation of a Narrow Charmoniumlike State in Exclusive B ± → K±π +π −J/ψ Decays. Phys. Rev. Lett. 91 (2003) 262001, https://doi.org/10.1103/PhysRevLett.91.262001.

D. Cronin-Hennessy et al. (CLEO Collaboration), Observation of the hadronic transitions χb1,2(2P) → ωΥ(1S), Phys. Rev. Lett. 92 (2004) 222002, https://doi.org/10.1103/PhysRevLett.92.222002.

M. B. Voloshin, Remarks on the decays χ 0 bJ → ωΥ, Mod. Phys. Lett. A 18 (2003) 1067, https://doi.org/10.1142/S021773230301082X.

A. Abashian et al. (Belle Collaboration), The Belle Detector, Nucl. Instrum. Meth. A 479 (2002) 117, https://doi.org/10.1016/S0168-9002(01)02013-7.

K. Akai et al., Commissioning of KEKB, Nucl. Instrum. Meth. A 499 (2003) 191, https://doi.org/10.1016/S0168-9002(02)01788-6.

Z. S. Stottler et al. (Belle Collaboration), Study of χbJ (nP) → ωΥ(1S) at Belle, BELLE-CONF-2102 (2021), https://arxiv.org/abs/2108.03497.

M. Benayoun et al., Spectroscopy at B factories using hard photon emission, Modern Physics Letters A 14 (1999) 2605, https://doi.org/10.1142/S021773239900273X.

D. J. Lange, The EvtGen particle decay simulation package, Nucl. Instrum. Meth. A 462 (2001) 152, https://doi.org/10.1016/S0168-9002(01)00089-4.

M. Jacob and G. C. Wick, On the general theory of collisions for particles with spin, Annals Phys. 7 (1959) 404, https://doi.org/10.1016/0003-4916(59)90051-X.

D. Cronin-Hennessy et al. (CLEO Collaboration), Study of dipion transitions among Υ(3S), Υ(2S), and Υ(1S) states, Phys. Rev. D 76 (2007) 072001, https://doi.org/10.1103/PhysRevD.76.072001.

E. Barberio and Z. Was, PHOTOS - a universal Monte Carlo for QED radiative corrections: version 2.0, Comput. Phys. Commun. 79 (1994) 291, https://doi.org/10.1016/0010-4655(94)90074-4.

R. Brun et al., GEANT 3.21, (1987) https://cds.cern.ch/record/1119728?ln=en.

E. Nakano, Belle PID, Nucl. Instrum. Meth. A 494 (2002) 402, https://doi.org/10.1016/S0168-9002(02)01510-3.

M. Oreglia, A Study of the Reactions ψ 0 → γγψ, PhD Thesis, Stanford University, (1980) https://www-public.slac.stanford.edu/sciDoc/docMeta.aspx?slacPubNumber=slac-r-236SLACR-236.

G. Cowan et al., Asymptotic formulae for likelihood-based tests of new physics, Eur. Phys. J. C 71 (2011) 1554, https://doi.org/10.1140/epjc/s10052-011-1554-0.

S. Godfrey and K. Moats, Bottomonium mesons and strategies for their observation, Phys. Rev. D 92 (2015) 054034, https://doi.org/10.1103/PhysRevD.92.054034.

A. M. Sirunyan et al. (CMS Collaboration), Observation of the χb1(3P) and χb2(3P) and Measurement of their Masses, Phys. Rev. Lett. 121 (2018) 092002, https://doi.org/10.1103/PhysRevLett.121.092002.

Downloads

Published

2022-08-25

How to Cite

1.
Stottler Z. Study of χbJ(nP ) → ωΥ(1S) at Belle. Supl. Rev. Mex. Fis. [Internet]. 2022 Aug. 25 [cited 2022 Dec. 9];3(3):0308072 1-5. Available from: https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/6289