Search for lepton flavor violation process J/ψ→eμ

Bai, J. Z.; Ban, Y.; Bian, J. G.; Cai, X.; Chang, J. F.; Chen, H.F.; Chen, H.S.; Chen, J.; Chen, Jie; Chen, J.C.; Chen, Y.B.; Chi, S.; Chu, Y. P.; Cui, X. Z.; Dai, Yan; Dai, Y. S.; Liu, Dong; Du, S. X.; Du, Z. Z.; Dunwoodie, W.; Fang, J.; Fang, S. S.; Fu, C.D.; Fu, Hai-Bing; Fu, L. P.; Gao, C. S.; Gao, M.; Gao, Y.; Gong, Ming; Gong, W. X.; Gu, S.; Guo, Y. N.; Guo, Y. Q.; Guo, Z. J.; Han, S.; Harris, F. A.; He, J.; He, K. L.; He, M.; He, Xiao‐Gang; Heng, Y. K.; Hong, T. M.; Hu, H. M.; Hu, Ting; Huang, G. S.; Huang, L. Q.; Huang, X. P.; Izen, J. M.; Ji, Xiangdong; Jiang, C. H.; Jiang, X. S.; Jin, D. P.; Jin, S.; Jin, Y.; Jones, B. D.; Ke, Z. J.; Kong, D. J.; Lai, Y. F.; Li, F.; Li, G.; Li, H.H.; Li, J.; Li, J.C.; Li, K.; Li, Qi; Li, R.B.; Li, R.Y.; Li, W.; Li, W.G.; Li, X.Q.; Li, X.S.; Liu, C.F.; Liu, C.X.; Liu, Fang; Liu, F.; Liu, H.M.; Liu, J.B.; Liu, J.P.; Liu, R.G.; LIU, Yongyi; Liu, Z.A.; Liu, Z.X.; Lou, X. C.; Lu, G. R.; Lu, F. X.; Lü, H. J.; Lü, J. G.; Lu, Z. J.; Luo, X. L.; Ma, Ernest; Ma, F.C.; Ma, J.; Malchow, R.; Mao, Z. P.; Meng, X. C.; Mo, X. H.; Nie, J.; Nie, Z. D.; Olsen, S. L.; Paluselli, D.; Peng, H.; Qi, N. D.; Qian, C. D.; Qiu, J. F.; Rong, G.; Shen, D. L.; Shen, H. F.; Shen, X. Y.; Sheng, H. Y.; Shi, Feng; Song, L.; Sun, H.; Sun, S.; Sun, Yang; Sun, Z. J.; Tang, S. Q.; Tang, X.; Tian, Dongxu; Tian, Yang; Toki, W. H.; Tong, G.; Varner, G.; Wang, J.; Wang, J.Z.; Wang, L.; Wang, L.S.; Wang, Manxing; Wang, Meng; Wang, P.; Wang, P.L.; Wang, W.F.; Wang, Y.F.; Wang, Zhe; Wang, Z.; Wang, Zheng; Wang, Z.Y.; Chen, Wei; Wu, N.; Xia, X. M.; Xie, X. X.; Xu, G. F.; Xu, Y. C.; Xue, S.; Yan, Mu-Lin; Yan, W.; Yang, G.; Yang, H. X.; Yang, J.; Yang, S.; Ye, M.H.; Ye, Y.X.; Ying, J.; Chen, Yu; Yu, G.; Yuan, C. Z.; Yuan, J. M.; Yuan, Y.; Yue, Q.; Zang, S. L.; Zeng, Y.; Zhang, B.X.; Zhang, B.Y.; Zhang, C.C.; Zhang, D.H.; Zhang, H.Y.; Zhang, J.; Zhang, J.M.; Zhang, J.W.; Zhang, L.S.; Zhang, Q.J.; Zhang, S.Q.; Zhang, X.Y.; Zhang, Y.J.; Zhang, Yiyun; Zhang, Yu; Zhang, Z.P.; Zhao, Dongxu; Zhao, Jiawei; Zhao, J. W.; Zhao, P. P.; Zhao, W. R.; Zhao, Y. B.; Zhao, Z. G.; Zheng, J. P.; Zheng, Lei; Zheng, Z. P.; Zhong, X. C.; Zhou, B.; Zhou, G. M.; Li, Zhou; Zhou, Na; Zhu, K. J.; Zhu, Q. M.; Zhu, Y.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, B. A.; Zou, B. S.

doi:10.1016/s0370-2693(03)00391-5

Cited by 15 publications

(12 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[49], searching for the CLFV J/ψ decays with a huge sample at the BESIII remains a worthwhile experimental challenge. With a 58 M J/ψ event sample at BESII, the following upper limits have been established [51]:…”

Section: Charged-lepton Flavor Violating Processes In Decays Of J/ψmentioning

confidence: 99%

Mini-review of rare charmonium decays at BESIII

Li¹,

Zhu²

2012

Chinese Phys. C

View full text Add to dashboard Cite

Recently, LHCb experiment announced a 3.5σ evidence for direct CP violation in D 0 decay by looking at the difference between ACP (D 0 → K + K − ) and ACP (D 0 → π + π − ). This is the first evidence of CP violation in charm system, which may indicate new physics beyond the Standard Model. Motivated by this measurement, we review rare processes in charmonium decay, especially, the weak decay, C or P violated decay and lepton flavor violated decays. In case the new physics appears in charm sector, these rare decays of charmonium states will provide opportunity to search for significant contributions from physics beyond the Standard Model. With huge J/ψ and ψ(2S) samples in BESIII experiment, the rare decays may be feasible.

show abstract

Section: Charged-lepton Flavor Violating Processes In Decays Of J/ψmentioning

confidence: 99%

Mini-review of rare charmonium decays at BESIII

Li¹,

Zhu²

2012

Chinese Phys. C

View full text Add to dashboard Cite

show abstract

“…The upper bound on BR(J/ψ → eµ) was achieved with the the BESII data [4] a long while ago. Before BESIII begins running, we would roughly pre-estimate the upper bound with 1 For scale dimension of the vector unparticle, it is pointed out that conformal symmetry puts a lower bound d ≥ 3 in [19].…”

Section: Estimating Possibility Of the Determination Of Br(j/ψ →mentioning

confidence: 99%

“…Since the BESIII experiment has not begun running yet, some detailed information about BESIII environment is not available, therefore we adopt relevant parameters for BESII to estimate BR(J/ψ → eµ) and the corresponding backgrounds, except the number of available J/ψ events. The method of determining the selection efficiency for J/ψ → eµ and the rate of misidentifying the background as a signal is the same as the one used in [4]. The overall selection efficiency for the signal channel (or rate of misidentifying the background channel as the signal channel) includes the µ and e particle identification (PID) efficiency and the geometric efficiency.…”

Section: Estimating Possibility Of the Determination Of Br(j/ψ →mentioning

confidence: 99%

“…Indeed, the geometric efficiency of BESIII is only slightly different from BESII, thus in this work we set the same geometric efficiency as that for the previous BESII experiments. The PID efficiency and contamination rate which refer to identifying other particles as electrons or muons in BESIII are taken from [4]. In order to discriminate muons to reject other particles as much as possible, a very rigorous criterion of the µ identification has to be performed while selecting signal event J/ψ → eµ.…”

Section: Estimating Possibility Of the Determination Of Br(j/ψ →mentioning

confidence: 99%

“…[2], it was suggested to look for LFV via charmonium J/ψ decays. In terms of the database of 5.8 × 10 7 J/ψ data at BES processes J/ψ → eµ [4], J/ψ → µτ, eτ [5] have been explored and upper limits for their branching fractions were set. New hope is raised that the forthcoming upgraded BESIII will accumulate up to 10 10 J/ψ per year [6], which makes it possible to test LFV with a much higher precision.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Probing unparticle theory via lepton-flavor violating process J/ψ→ll′ at BESIII

Wei

2009

Eur. Phys. J. C

View full text Add to dashboard Cite

The lepton flavor violating process J/ψ → ll ′ (l = l ′ ) serves as an ideal place to probe the unparticle theory. Such process can only occur at loop level in the Standard model (SM), so that should be very suppressed, by contrast in unparticle scenario, it happens at tree level and its contribution may be sizable for practical measurement. Moreover, the BESIII will offer the largest database on J/ψ which makes more accurate measurements possible. Furthermore, for such purely leptonic decays background is relatively low and signal would be cleaner. Our work carefully investigates the possibility of observing such processes from both theoretical and experimental aspects.

show abstract

Searching for lepton flavor violation processes at BES

Tong

2005

Nuclear Physics B - Proceedings Supplements

View full text Add to dashboard Cite

Search for lepton flavor violation process J/ψ→eμ

Cited by 15 publications

References 19 publications

Mini-review of rare charmonium decays at BESIII

Mini-review of rare charmonium decays at BESIII

Probing unparticle theory via lepton-flavor violating process J/ψ→ll′ at BESIII

Searching for lepton flavor violation processes at BES

Contact Info

Product

Resources

About