SU(3) Symmetry Breaking Decays of Charmonia
SU(3) symmetry
Abstract
SU (3) symmetry breaking in several Charmonia decays was studied using the data from world’s leading High Energy Physics laboratories. The charm factory BESIII was the main source of information. Branching fraction with different number of events of J/ψ, ψ (2S) → ɅɅ̅, ΣΣ̅, Ξ Ξ were computed. The total number of events for J/ψ from 1.32 × 106 to 1310.6 × 106 and that of ψ (2S) from 3.96 × 10106 to 448.1× 10106 were studied. The corresponding branching fractions and value of decay constant α for above mentioned channels became more precise with increase of the number of events. The results of their comparison have been elaborated and are compiled in tabular form. All the data is collected year wise from the date of arise of this phenomenon (1984) to present. It has been observed from the study that with the passage of time and increased number of events gives more precise values of branching fraction and decay constant α.
References
Zhi, M. Y., Zheng Han- Qing and Zhu Young-Sheng Large SU(3) Symmetry Breaking in J/???? → BB Decays*.Commun.Theor.Physics. Beijing, China 37:319-322 (2002).
Wei, D.H. The SU(3) symmetry breaking in J/ψ decays. Journal of Physics G: Nuclear and Particle Physics J. Phys.G: Nuclear. Particle. Physics36.115006: 6 (2009).
Hu, M. X. Baryonic Decays. Rong-Gang Ping;http://(bes.ihep.ac.cn/bes3/phy_book/book/phy/BaryonicDecays.pdf).
Genz, H.,M. Malvetti, S. Tatur. Remark on an Su (3) f-violoting decay of ????. Physical. Review.D 31: 1751(1985).
Ablikim, M., Z.H. An, J.Z. Bai.et al. Design and construction of the BESIII detector.Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 614(3): 345-399(2010).
Ablikim, M., M.N.Achasov. etal. Study of J/???? and ???? (3686) decay to ΛΛ and Σ0 Σ0̅ f inal states.arXiv: 1701.07191v1 [hep-ex] (2017).
Claudson, M., S. L. Glashow & M. B. Wise. Isospin violation in J/????→ baryon + antibaryon. Physical Review.D 25: 1345 (1985).
Jadach, S., B. F.L. Ward. Event generators at BESIII. Physical Review. D 63: 113009 (2001).
Eaton, M. W. et al. Decays of the ????(3097) to Baryon-Anti-baryon final states.Physical Review D 29(5): 804 (1984).
Bai, J. Z. et al. Decays of the J/ψ to ΛΛ, ΛΛγ and ΛΛπ0 final states. Physics Letters B 424: 213218(1998).
Abe, K. et al. Study of Charmonium Decays into Baryon-Antibaryon Pairs. arXiv:hep- ex/0509020 (1) (2005).
Ablikim, M., J.Z. et al. Study of the J/???? decays to ΛΛ̅ and Σ0 Σ̅0. Physics Letters B 632: 181186(2006).
Wu, C.H., M.Z. et al. Study of J/ψ→pp , ΛΛ and observation of ηc→Λ at Belle. arXiv:hep- ex/0606022 (1) (2006).
Aubert, B., M.B. et al. Study of e+e−→ΛΛ̅, Λ Σ̅0, Σ0 Σ̅0 using initial state radiation with BABAR.10.1103/PhysicalReview D. 76: 092006 (2007).
Ablikim, M., J. Z. et al. First measurements of J/ψ decays into Σ+Σ- and Ξ0Ξ0. arXiv:0810.1896 (2) [hep-ex] (2008).
Bai, J. Z. et al. Measurement of ψ(2S) decays to baryon pairs. 10.1103/PhysicalReview D. 63: 032002 (2001).
Pedlar, T. K. et al. Branching-fraction measurements of ψ(2S) decay to baryon-antibaryon final states.10.1103/PhysicalReview D 72: 051108 (2005).
Ablikim, M., J.Z. et al. Measurements of ψ(2S) decays to octet baryonantibaryon pairs. Physics Letters B 648: 149155 (2007).
Ablikim, M., M.N. et al. Observation of ηcdecay into Σ+Σ- and Ξ-Ξ+ final states. arXiv:1210.2831 (2) [hep-ex](2012).
Ablikim, M. et al. BES Collaboration, Measurements of ψ(2S) decays to octet baryon antibaryon pairs.Physics Letter B 632: 181 (2006).
M. Ablikim, J.Z. et al. Study of the J/ ψ decays to ΛΛ and Σ+Σ-, 0arXiv:hep-ex/0506020 (1) (2005).
Ablikim, M. et al. J/ψ decays into Σ+Σ- and Ξ-Ξ+.Physical Review D 78: 092005. (2008).
Ablikim, M., M. N. Achasov5.et al. First observation of the isospin violating decay J/ψ→ΛΣ̅0 + c.c.arXiv:1207.1201 (3) [hep-ex](2012).
Ablikim, M., M.N. et al. Study of J/ψ and ψ(3686) → Σ0(1385) (1385) and Ξ-Ξ+ arXiv:1612.08664 (1) [hep-ex] (2016).
