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Berger, N.; Cai, X.; Calcaterra, A.; Cetin, S. A.; Chang, W. L.; Chen, C.; Chen, S. M.; Ding, Y.; Du, S. X.; Fischer, K.; Garzia, I.; Gersabeck, E. M.; Gilman, A.; Goetzen, K.; Gong, W. X.; Guan, C. Y.; Guo, Y. P.; Harris, F. A.; Hong, P. C.; Hou, Y. R.; Huang, G. S.; Huang, X. T.; Irshad, M.; Jiang, Y.; Jiao, Z.; Jin, Y.; Kappert, R.; Kavatsyuk, M.; Lange, J. S.; Li, X. L.; Li, Z. J.; Liang, Y. F.; Liu, J. Y.; Liu, P. L.; Lou, X. C.; Lu, J. G.; Lu, Y. P.; Ma, Q. M.; Ma, R. Q.; Malde, S.; Mao, Z. P.; Marcello, S.; Messchendorp, J. G.; Muchnoi, N. Yu; Niu, Y.; Qin, X. S.; Rivetti, A.; Rong, G.; Rosner, Ch; Shan, W.; Shangguan, J. F.; Shao, L. G.; Shao, M.; Shen, C. P.; Shi, J. L.; Song, J. J.; Sosio, S.; Spataro, S.; Sun, H.; Sun, Y. J.; Tang, J.; Tat, M.; Tian, Z. F.; Wang, D. Y.; Wang, F.; Wang, M.; Wang, T.; Wang, T. J.; Wang, X.; Wang, X. L.; Wang, Y.; Wang, Y. Q.; Wiedner, U.; Wu, L. J.; Wu, Z.; Xia, L.; Xian, X. M.; Xie, Y.; Yang, H. J.; Yang, Y.; Yu, X. D.; Yuan, L.; Yuan, X. Q.; Yue, C. X.; Zhang, A. Q.; Zhang, B. L.; Zhang, D. H.; Zhang, H. H.; Zhang, J. X.; Zhang, J. Y.; Zhang, Jianyu; Zhang, L. Q.; Zhang, Y. H.; Zhang, Yao; Zhao, S. J.; Zhao, Y. B.; Zhao, Y. X.; Zhou, X. Y.; Zhu, L. X.; Zhu, S. H.
The journal of high energy physics, 09/2023, Volume: 2023, Issue: 9Journal Article
A bstract Based on 4.5 fb − 1 data taken at seven center-of-mass energies ranging from 4.600 to 4.699 GeV with the BESIII detector at the BEPCII collider, we measure the branching fractions of $$ {\Lambda}_c^{+} $$ Λ c + → Σ + + hadrons relative to $$ {\Lambda}_c^{+} $$ Λ c + → Σ + π + π − . Combining with the world average branching fraction of $$ {\Lambda}_c^{+} $$ Λ c + → Σ + π + π − , their branching fractions are measured to be (0 . 377 ± 0 . 042 ± 0 . 020 ± 0 . 021)% for $$ {\Lambda}_c^{+} $$ Λ c + → Σ + K + K − , (0 . 200 ± 0 . 023 ± 0 . 011 ± 0 . 011)% for $$ {\Lambda}_c^{+} $$ Λ c + → Σ + K + π − , (0 . 414 ± 0 . 080 ± 0 . 030 ± 0 . 023)% for $$ {\Lambda}_c^{+} $$ Λ c + → Σ + ϕ and (0 . 197 ± 0 . 036 ± 0 . 009 ± 0 . 011)% for $$ {\Lambda}_c^{+} $$ Λ c + → Σ + K + K − (non- ϕ ). In all the above results, the first uncertainties are statistical, the second are systematic and the third are from external input of the branching fraction of $$ {\Lambda}_c^{+} $$ Λ c + → Σ + π + π − . Since no signal for $$ {\Lambda}_c^{+} $$ Λ c + → Σ + K + π − π 0 is observed, the upper limit of its branching fraction is determined to be 0.13% at the 90% confidence level.
