Abstract
Using 448.1 × 106 ψ(3686) decays collected with the BESIII detector at the BEPCII e+e− storage rings, the branching fractions and angular distributions of the decays χcJ → Ξ−\( \overline{\Xi} \)+ and Ξ0\( \overline{\Xi} \)0 (J = 0, 1, 2) are measured based on a partial-reconstruction technique. The decays χc1 → Ξ0\( \overline{\Xi} \)0 and χc2 → Ξ0\( \overline{\Xi} \)0 are observed for the first time with statistical significances of 7σ and 15σ, respectively. The results of this analysis are in good agreement with previous measurements and have significantly improved precision.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
S.J. Brodsky and G.P. Lepage, Helicity Selection Rules and Tests of Gluon Spin in Exclusive QCD Processes, Phys. Rev. D 24 (1981) 2848 [INSPIRE].
BESIII collaboration, Search for ηc (2S)hc → \( p\overline{p} \) decays and measurements of the χcJ → p\( \overline{p} \) branching fractions, Phys. Rev. D 88 (2013) 112001 [arXiv:1310.6099] [INSPIRE].
BESIII collaboration, Measurements of baryon pair decays of χcJ mesons, Phys. Rev. D 87 (2013) 032007 [Erratum ibid. 87 (2013) 059901] [arXiv:1211.2283] [INSPIRE].
CLEO collaboration, Measurement of exclusive baryon-antibaryon decays of χcJ mesons, Phys. Rev. D 78 (2008) 031101 [arXiv:0806.1715] [INSPIRE].
M. Ablikim et al., Measurement of χcJ decays to 2(π+ π− )p\( \overline{p} \) final states, Phys. Rev. D 73 (2006) 052006 [hep-ex/0602033] [INSPIRE].
BESIII collaboration, Improved measurements of χcJ → Σ+ \( \overline{\Sigma} \)− and Σ0 \( \overline{\Sigma} \)0 decays, Phys. Rev. D 97 (2018) 052011 [arXiv:1710.07922] [INSPIRE].
BESIII collaboration, First Measurements of χcJ → Σ− \( \overline{\Sigma} \)+ (J = 0, 1, 2) Decays, Phys. Rev. D 101 (2020) 092002 [arXiv:2004.01394] [INSPIRE].
BESIII collaboration, Observation of χcJ decaying into the p\( \overline{p} \)K + K − final state, Phys. Rev. D 83 (2011) 112009 [arXiv:1103.2661] [INSPIRE].
BESIII collaboration, Observation of χcJ decays to Λ\( \overline{\Lambda} \) π+ π− , Phys. Rev. D 86 (2012) 052004 [arXiv:1207.5646] [INSPIRE].
S. Barsuk, J. He, E. Kou and B. Viaud, Investigating charmonium production at LHC with the p\( \overline{p} \) final state, Phys. Rev. D 86 (2012) 034011 [arXiv:1202.2273] [INSPIRE].
F. Murgia, 1P1 charmonium state decay into p\( \overline{p} \) in QCD models including constituent quark mass corrections, Phys. Rev. D 54 (1996) 3365 [hep-ph/9601386] [INSPIRE].
Y.-J. Zhang, G. Li and Q. Zhao, Towards a Dynamical Understanding of the Non-D\( \overline{D} \) Decay of ψ(3770), Phys. Rev. Lett. 102 (2009) 172001 [arXiv:0902.1300] [INSPIRE].
X.-H. Liu and Q. Zhao, Evasion of helicity selection rule in χc1 → VV and χc2 → VP via intermediate charmed meson loops, Phys. Rev. D 81 (2010) 014017 [arXiv:0912.1508] [INSPIRE].
X.-H. Liu and Q. Zhao, Further study of the helicity selection rule evading mechanism in ηc, χc0 and hc decaying to baryon-anti-baryon pairs, J. Phys. G 38 (2011) 035007 [arXiv:1004.0496] [INSPIRE].
R.G. Ping, B.S. Zou and H.C. Chiang, P-wave charmonium decays into baryon and antibaryon pairs in quark pair creation model, Eur. Phys. J. A 23 (2004) 129 [INSPIRE].
G.T. Bodwin, E. Braaten and G.P. Lepage, Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium, Phys. Rev. D 51 (1995) 1125 [Erratum ibid. 55 (1997) 5853] [hep-ph/9407339] [INSPIRE].
S.M.H. Wong, Color octet contribution in exclusive P-wave charmonium decay into octet and decuplet baryons, Eur. Phys. J. C 14 (2000) 643 [hep-ph/9903236] [INSPIRE].
H. Chen and R.-G. Ping, Polarization in χcJ → Λ\( \overline{\Lambda} \) decays, Phys. Rev. D 102 (2020) 016021 [INSPIRE].
F. Murgia and M. Melis, Mass corrections in J/ψ → B\( \overline{B} \) decay and the role of distribution amplitudes, Phys. Rev. D 51 (1995) 3487 [hep-ph/9412205] [INSPIRE].
BESIII collaboration, Study of ψ decays to the Ξ− \( \overline{\Xi} \) + and Σ(1385)∓ \( \overline{\Sigma} \) (1385)± final states, Phys. Rev. D 93 (2016) 072003 [arXiv:1602.06754] [INSPIRE].
BESIII collaboration, Study of J/ψ and ψ(3686) → Σ(1385)0 \( \overline{\Sigma} \)(1385)0 and Ξ0 \( \overline{\Xi} \)0 , Phys. Lett. B 770 (2017) 217 [arXiv:1612.08664] [INSPIRE].
BESIII collaboration, Determination of the number of ψ(3686) events at BESIII, Chin. Phys. C 42 (2018) 023001 [arXiv:1709.03653] [INSPIRE].
BESIII collaboration, Design and Construction of the BESIII Detector, Nucl. Instrum. Meth. A 614 (2010) 345 [arXiv:0911.4960] [INSPIRE].
C. Yu et al., BEPCII Performance and Beam Dynamics Studies on Luminosity, in Proc. of International Particle Accelerator Conference (IPAC’16), Busan, Korea, May 8–13, 2016, no. 7 in International Particle Accelerator Conference, Geneva, Switzerland, pp. 1014–1018, JACoW, June, 2016, [ DOI].
BESIII collaboration, Future Physics Programme of BESIII, Chin. Phys. C 44 (2020) 040001 [arXiv:1912.05983] [INSPIRE].
GEANT4 collaboration, GEANT4 — a simulation toolkit, Nucl. Instrum. Meth. A 506 (2003) 250 [INSPIRE].
S. Jadach, B.F.L. Ward and Z. Was, Coherent exclusive exponentiation for precision Monte Carlo calculations, Phys. Rev. D 63 (2001) 113009 [hep-ph/0006359] [INSPIRE].
D.J. Lange, The EvtGen particle decay simulation package, Nucl. Instrum. Meth. A 462 (2001) 152 [INSPIRE].
R.-G. Ping, Event generators at BESIII, Chin. Phys. C 32 (2008) 599 [INSPIRE].
Particle Data Group collaboration, Review of Particle Physics, PTEP 2020 (2020) 083C01 [INSPIRE].
J.C. Chen, G.S. Huang, X.R. Qi, D.H. Zhang and Y.S. Zhu, Event generator for J/ψ and ψ(2S) decay, Phys. Rev. D 62 (2000) 034003 [INSPIRE].
R.-L. Yang, R.-G. Ping and H. Chen, Tuning and validation of the Lundcharm model with J/ψ decays, Chin. Phys. Lett. 31 (2014) 061301 [INSPIRE].
E. Richter-Was, QED bremsstrahlung in semileptonic B and leptonic τ decays, Phys. Lett. B 303 (1993) 163 [INSPIRE].
G.-R. Liao, R.-G. Ping and Y.-X. Yang, Helicity Amplitude Analysis of e+ e− → ψ(2S) → γχcJ → γΛ\( \overline{\Lambda} \) → γpπ− \( \overline{p} \)π+ , Chin. Phys. Lett. 26 (2009) 051101 [INSPIRE].
BESIII collaboration, Measurement of higher-order multipole amplitudes in ψ(3686) → γχc1,2 with χc1,2 → γJ/ψ and search for the transition ηc (2S) → J/ψ, Phys. Rev. D 95 (2017) 072004 [arXiv:1701.01197] [INSPIRE].
S. Dobbs, K.K. Seth, A. Tomaradze, T. Xiao and G. Bonvicini, Hyperon form factors and diquark correlations, Phys. Rev. D 96 (2017) 092004 [arXiv:1708.09377] [INSPIRE].
BESIII collaboration, Measurement of the Cross Section for e+ e− → Ξ− \( \overline{\Xi} \)+ and Observation of an Excited Ξ Baryon, Phys. Rev. Lett. 124 (2020) 032002 [arXiv:1910.04921] [INSPIRE].
BESIII collaboration, Measurement of cross section for e+ e− → Ξ0 \( \overline{\Xi} \)0 near threshold, Phys. Lett. B 820 (2021) 136557 [arXiv:2105.14657] [INSPIRE].
BESIII collaboration, Measurement of cross section for e+ e− → Ξ− \( \overline{\Xi} \)+ near threshold at BESIII, Phys. Rev. D 103 (2021) 012005 [arXiv:2010.08320] [INSPIRE].
BESIII collaboration, Measurement of Λ baryon polarization in e+ e− → Λ\( \overline{\Lambda} \) at \( \sqrt{s} \) = 3.773 GeV , Phys. Rev. D 105 (2022) L011101 [arXiv:2111.11742] [INSPIRE].
BESIII collaboration, Measurement of the cross section for e+ e− → Λ\( \overline{\Lambda} \) and evidence of the decay ψ(3770) → Λ\( \overline{\Lambda} \), Phys. Rev. D 104 (2021) L091104 [arXiv:2108.02410] [INSPIRE].
M. Xu et al., Decay vertex reconstruction and 3-dimensional lifetime determination at BESIII, Chin. Phys. C 33 (2009) 428 [INSPIRE].
X.Y. Zhou, S.X. Du, G. Li and C.P. Shen, TopoAna: A generic tool for the event type analysis of inclusive Monte-Carlo samples in high energy physics experiments, Comput. Phys. Commun. 258 (2021) 107540.
BESIII collaboration, Precision Measurement of the e+ e− → \( {\Lambda}_c^{+} \) + \( {\Lambda}_c^{-} \) − Cross Section Near c c Threshold, Phys. Rev. Lett. 120 (2018) 132001 [arXiv:1710.00150] [INSPIRE].
BESIII collaboration, Observation of ψ(3686) → Ξ(1530)− \( \overline{\Xi} \)(1530)+ and Ξ(1530)− \( \overline{\Xi} \)+ , Phys. Rev. D 100 (2019) 051101 [arXiv:1907.13041] [INSPIRE].
BESIII collaboration, First observation of the decays χcJ → π0 π0 π0 π0, Phys. Rev. D 83 (2011) 012006 [arXiv:1011.6556] [INSPIRE].
BESIII collaboration, Observation of ψ(3686) → Ξ(1530)0 \( \overline{\Xi} \)(1530)0 and Ξ(1530)0\( \overline{\Xi} \)0 , Phys. Rev. D 104 (2021) 092012 [arXiv:2109.06621] [INSPIRE].
BESIII collaboration, Cross section measurement of e+ e− → π+ π− ψ(3686) from \( \sqrt{s} \) = 4.0076 GeV to 4.6984 GeV, Phys. Rev. D 104 (2021) 052012 [arXiv:2107.09210] [INSPIRE].
BESIII collaboration, Improved measurements of two-photon widths of the χcJ states and helicity analysis for χc2 → γγ, Phys. Rev. D 96 (2017) 092007 [arXiv:1709.06742] [INSPIRE].
BESIII collaboration, Observation of the decays χcJ → 𝜙𝜙η, Phys. Rev. D 101 (2020) 012012 [arXiv:1911.02988] [INSPIRE].
Author information
Authors and Affiliations
Consortia
Corresponding author
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
ArXiv ePrint: 2202.08058
Rights and permissions
Open Access . This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
About this article
Cite this article
The BESIII collaboration., Ablikim, M., Achasov, M. et al. Study of the processes χcJ → Ξ−\( \overline{\Xi} \) + and Ξ0 \( \overline{\Xi} \)0. J. High Energ. Phys. 2022, 74 (2022). https://doi.org/10.1007/JHEP06(2022)074
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP06(2022)074