Determination of the $\Lambda_c^+$ spin via the reaction $e^+e^-\to\Lambda_c^+\bar\Lambda_c^-$
High Energy Physics - Experiment
2021-05-26 v2
Abstract
We report on a comparison of two possible spin hypotheses, and , via the process , using the angular distributions of decays into , , , and . The data were recorded at GeV with the BESIII detector and correspond to an integrated luminosity of 587 pb. The spin is determined to be , with this value favored over the hypothesis with a significance corresponding to more than 6 Gaussian standard deviations.
Cite
@article{arxiv.2011.00396,
title = {Determination of the $\Lambda_c^+$ spin via the reaction $e^+e^-\to\Lambda_c^+\bar\Lambda_c^-$},
author = {BESIII Collaboration and M. Ablikim and M. N. Achasov and P. Adlarson and S. Ahmed and M. Albrecht and A. Amoroso and Q. An and Anita and Y. Bai and O. Bakina and R. Baldini Ferroli and I. Balossino and Y. Ban and K. Begzsuren and J. V. Bennett and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J Biernat and J. Bloms and A. Bortone and I. Boyko and R. A. Briere and H. Cai and X. Cai and A. Calcaterra and G. F. Cao and N. Cao and S. A. Cetin and J. F. Chang and W. L. Chang and G. Chelkov and D. Y. Chen and G. Chen and H. S. Chen and M. L. Chen and S. J. Chen and X. R. Chen and Y. B. Chen and W. S. Cheng and G. Cibinetto and F. Cossio and X. F. Cui and H. L. Dai and J. P. Dai and X. C. Dai and A. Dbeyssi and R. B. de Boer and D. Dedovich and Z. Y. Deng and A. Denig and I. Denysenko and M. Destefanis and F. De Mori and Y. Ding and C. Dong and J. Dong and L. Y. Dong and M. Y. Dong and S. X. Du and J. Fang and S. S. Fang and Y. Fang and R. Farinelli and L. Fava and F. 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S. Kang and R. Kappert and M. Kavatsyuk and B. C. Ke and I. K. Keshk and A. Khoukaz and P. Kiese and R. Kiuchi and R. Kliemt and L. Koch and O. B. Kolcu and B. Kopf and M. Kuemmel and M. Kuessner and A. Kupsc and M. G. Kurth and W. Kühn and J. J. Lane and J. S. Lange and P. Larin and L. Lavezzi and H. Leithoff and M. Lellmann and T. Lenz and C. Li and C. H. Li and Cheng Li and D. M. Li and F. Li and G. Li and H. B. Li and H. J. Li and J. L. Li and J. Q. Li and Ke Li and L. K. Li and Lei Li and P. L. Li and P. R. Li and S. Y. Li and W. D. Li and W. G. Li and X. H. Li and X. L. Li and Z. B. Li and Z. Y. Li and H. Liang and H. Liang and Y. F. Liang and Y. T. Liang and L. Z. Liao and J. Libby and C. X. Lin and B. Liu and B. J. Liu and C. X. Liu and D. Liu and D. Y. Liu and F. H. Liu and Fang Liu and Feng Liu and H. B. Liu and H. M. Liu and Huanhuan Liu and Huihui Liu and J. B. Liu and J. Y. Liu and K. Liu and K. Y. Liu and Ke Liu and L. Liu and Q. Liu and S. B. Liu and Shuai Liu and T. 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Poling and V. Prasad and H. Qi and H. R. Qi and M. Qi and T. Y. Qi and S. Qian and W. -B. Qian and Z. Qian and C. F. Qiao and L. Q. Qin and X. P. Qin and X. S. Qin and Z. H. Qin and J. F. Qiu and S. Q. Qu and K. H. Rashid and K. Ravindran and C. F. Redmer and A. Rivetti and V. Rodin and M. Rolo and G. Rong and Ch. Rosner and M. Rump and A. Sarantsev and Y. Schelhaas and C. Schnier and K. Schoenning and D. C. Shan and W. Shan and X. Y. Shan and M. Shao and C. P. Shen and P. X. Shen and X. Y. Shen and H. C. Shi and R. S. Shi and X. Shi and X. D Shi and J. J. Song and Q. Q. Song and W. M. Song and Y. X. Song and S. Sosio and S. Spataro and F. F. Sui and G. X. Sun and J. F. Sun and L. Sun and S. S. Sun and T. Sun and W. Y. Sun and X Sun and Y. J. Sun and Y. K Sun and Y. Z. Sun and Z. T. Sun and Y. H. Tan and Y. X. Tan and C. J. Tang and G. Y. Tang and J. Tang and V. Thoren and B. Tsednee and I. Uman and B. Wang and B. L. Wang and C. W. Wang and D. Y. Wang and H. P. Wang and K. Wang and L. L. Wang and M. Wang and M. Z. Wang and Meng Wang and W. H. Wang and W. P. Wang and X. Wang and X. F. Wang and X. L. Wang and Y. Wang and Y. Wang and Y. D. Wang and Y. F. Wang and Y. Q. Wang and Z. Wang and Z. Y. Wang and Ziyi Wang and Zongyuan Wang and D. H. Wei and P. Weidenkaff and F. Weidner and S. P. Wen and D. J. White and U. Wiedner and G. Wilkinson and M. Wolke and L. Wollenberg and J. F. Wu and L. H. Wu and L. J. Wu and X. Wu and Z. Wu and L. Xia and H. Xiao and S. Y. Xiao and Y. J. Xiao and Z. J. Xiao and X. H. Xie and Y. G. Xie and Y. H. Xie and T. Y. Xing and X. A. Xiong and G. F. Xu and J. J. Xu and Q. J. Xu and W. Xu and X. P. Xu and L. Yan and L. Yan and W. B. Yan and W. C. Yan and Xu Yan and H. J. Yang and H. X. Yang and L. Yang and R. X. Yang and S. L. Yang and Y. H. Yang and Y. X. Yang and Yifan Yang and Zhi Yang and M. Ye and M. H. Ye and J. H. Yin and Z. Y. You and B. X. Yu and C. X. Yu and G. Yu and J. S. Yu and T. Yu and C. Z. Yuan and W. Yuan and X. Q. Yuan and Y. Yuan and Z. Y. Yuan and C. X. Yue and A. Yuncu and A. A. Zafar and Y. Zeng and B. X. Zhang and Guangyi Zhang and H. H. Zhang and H. Y. Zhang and J. L. Zhang and J. Q. Zhang and J. W. Zhang and J. Y. Zhang and J. Z. Zhang and Jianyu Zhang and Jiawei Zhang and L. Zhang and Lei Zhang and S. Zhang and S. F. Zhang and T. J. Zhang and X. Y. Zhang and Y. Zhang and Y. H. Zhang and Y. T. Zhang and Yan Zhang and Yao Zhang and Yi Zhang and Z. H. Zhang and Z. Y. Zhang and G. Zhao and J. Zhao and J. Y. Zhao and J. Z. Zhao and Lei Zhao and Ling Zhao and M. G. Zhao and Q. Zhao and S. J. Zhao and Y. B. Zhao and Y. X. Zhao and Z. G. Zhao and A. Zhemchugov and B. Zheng and J. P. Zheng and Y. Zheng and Y. H. Zheng and B. Zhong and C. Zhong and L. P. Zhou and Q. Zhou and X. Zhou and X. K. Zhou and X. R. Zhou and A. N. Zhu and J. Zhu and K. Zhu and K. J. Zhu and S. H. Zhu and W. J. Zhu and X. L. Zhu and Y. C. Zhu and Z. A. Zhu and B. S. Zou and J. H. Zou},
journal= {arXiv preprint arXiv:2011.00396},
year = {2021}
}