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Search for the leptonic decays D * + →

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We present the first search for the leptonic decays D * + → e + ν e and D * + → μ + ν μ by analyzing a data sample of electron-positron collisions recorded with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, corresponding to an integrated luminosity of 6.32     fb − 1 . No significant signal is observed. The upper limits on the branching fractions for D * + → e + ν e and D * + → μ + ν μ are set to be 1.1 × 10 − 5 and 4.3 × 10 − 6 at 90% confidence level, respectively. Published by the American Physical Society 2024
American Physical Society (APS)
M. Ablikim M. N. Achasov P. Adlarson M. Albrecht R. Aliberti A. Amoroso M. R. An Q. An Y. Bai O. Bakina R. Baldini Ferroli I. Balossino Y. Ban V. Batozskaya D. Becker K. Begzsuren N. Berger M. Bertani D. Bettoni F. Bianchi E. Bianco J. Bloms A. Bortone I. Boyko R. A. Briere A. Brueggemann H. Cai X. Cai A. Calcaterra G. F. Cao N. Cao S. A. Cetin J. F. Chang W. L. Chang G. R. Che G. Chelkov C. Chen Chao Chen G. Chen H. S. Chen M. L. Chen S. J. Chen S. M. Chen T. Chen X. R. Chen X. T. Chen Y. B. Chen Z. J. Chen W. S. Cheng S. K. Choi X. Chu G. Cibinetto F. Cossio J. J. Cui H. L. Dai J. P. Dai A. Dbeyssi R. E. de Boer D. Dedovich Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori Y. Ding Y. Ding J. Dong L. Y. Dong M. Y. Dong X. Dong S. X. Du Z. H. Duan P. Egorov Y. L. Fan J. Fang S. S. Fang W. X. Fang Y. Fang R. Farinelli L. Fava F. Feldbauer G. Felici C. Q. Feng J. H. Feng K. Fischer M. Fritsch C. Fritzsch C. D. Fu H. Gao Y. N. Gao Yang Gao S. Garbolino I. Garzia P. T. Ge Z. W. Ge C. Geng E. M. Gersabeck A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl M. Greco L. M. Gu M. H. Gu Y. T. Gu C. Y. Guan A. Q. Guo L. B. Guo R. P. Guo Y. P. Guo A. Guskov W. Y. Han X. Q. Hao F. A. Harris K. K. He K. L. He F. H. Heinsius C. H. Heinz Y. K. Heng C. Herold G. Y. Hou Y. R. Hou Z. L. Hou H. M. Hu J. F. Hu T. Hu Y. Hu G. S. Huang K. X. Huang L. Q. Huang X. T. Huang Y. P. Huang Z. Huang Z. C. Huang T. Hussain N. Hüsken W. Imoehl M. Irshad J. Jackson S. Jaeger S. Janchiv E. Jang J. H. Jeong Q. Ji Q. P. Ji X. B. Ji X. L. Ji Y. Y. Ji Z. K. Jia P. C. Jiang S. S. Jiang X. S. Jiang Y. Jiang J. B. Jiao Z. Jiao S. Jin Y. Jin M. Q. Jing T. Johansson S. Kabana N. Kalantar-Nayestanaki X. L. Kang X. S. Kang R. Kappert M. Kavatsyuk B. C. Ke I. K. Keshk A. Khoukaz R. Kiuchi R. Kliemt L. Koch O. B. Kolcu B. Kopf M. Kuemmel M. Kuessner A. Kupsc W. Kühn J. J. Lane J. S. Lange P. Larin A. Lavania L. Lavezzi T. T. Lei Z. H. Lei H. Leithoff M. Lellmann T. Lenz C. Li C. Li C. H. Li Cheng Li D. M. Li F. Li G. Li H. Li H. B. Li H. J. Li H. N. Li Hui Li J. Q. Li J. S. Li J. W. Li Ke Li L. J. Li L. K. Li Lei Li M. H. Li P. R. Li S. X. Li S. Y. Li T. Li W. D. Li W. G. Li X. H. Li X. L. Li Xiaoyu Li Y. G. Li Z. X. Li Z. Y. Li C. Liang H. Liang H. Liang H. Liang Y. F. Liang Y. T. Liang G. R. Liao L. Z. Liao J. Libby A. Limphirat C. X. Lin D. X. Lin T. Lin B. J. Liu C. Liu C. X. Liu D. Liu F. H. Liu Fang Liu Feng Liu G. M. Liu H. Liu H. B. Liu H. M. Liu Huanhuan Liu Huihui Liu J. B. Liu J. L. Liu J. Y. Liu K. Liu K. Y. Liu Ke Liu L. Liu Lu Liu M. H. Liu P. L. Liu Q. Liu S. B. Liu T. Liu W. K. Liu W. M. Liu X. Liu Y. Liu Y. B. Liu Z. A. Liu Z. Q. Liu X. C. Lou F. X. Lu H. J. Lu J. G. Lu X. L. Lu Y. Lu Y. P. Lu Z. H. Lu C. L. Luo M. X. Luo T. Luo X. L. Luo X. R. Lyu Y. F. Lyu F. C. Ma H. L. Ma L. L. Ma M. M. Ma Q. M. Ma R. Q. Ma R. T. Ma X. Y. Ma Y. Ma F. E. Maas M. Maggiora S. Maldaner S. Malde Q. A. Malik A. Mangoni Y. J. Mao Z. P. Mao S. Marcello Z. X. Meng J. G. Messchendorp G. Mezzadri H. Miao T. J. Min R. E. Mitchell X. H. Mo N. Yu. Muchnoi Y. Nefedov F. Nerling I. B. Nikolaev Z. Ning S. Nisar Y. Niu S. L. Olsen Q. Ouyang S. Pacetti X. Pan Y. Pan A. Pathak Y. P. Pei M. Pelizaeus H. P. Peng K. Peters J. L. Ping R. G. Ping S. Plura S. Pogodin V. Prasad F. Z. Qi H. Qi H. R. Qi M. Qi T. Y. Qi S. Qian W. B. Qian Z. Qian C. F. Qiao J. J. Qin L. Q. Qin X. P. Qin X. S. Qin Z. H. Qin J. F. Qiu S. Q. Qu K. H. Rashid C. F. Redmer K. J. Ren A. Rivetti V. Rodin M. Rolo G. Rong Ch. Rosner S. N. Ruan A. Sarantsev Y. Schelhaas C. Schnier K. Schoenning M. Scodeggio K. Y. Shan W. Shan X. Y. Shan J. F. Shangguan L. G. Shao M. Shao C. P. Shen H. F. Shen W. H. Shen X. Y. Shen B. A. Shi H. C. Shi J. Y. Shi q. q. Shi R. S. Shi X. Shi J. J. Song W. M. Song Y. X. Song S. Sosio S. Spataro F. Stieler P. P. Su Y. J. Su G. X. Sun H. Sun H. K. Sun J. F. Sun L. Sun S. S. Sun T. Sun W. Y. Sun Y. J. Sun Y. Z. Sun Z. T. Sun Y. X. Tan C. J. Tang G. Y. Tang J. Tang L. Y. 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Zafar F. R. Zeng X. Zeng Y. Zeng X. Y. Zhai Y. H. Zhan A. Q. Zhang B. L. Zhang B. X. Zhang D. H. Zhang G. Y. Zhang H. Zhang H. H. Zhang H. H. Zhang H. Q. Zhang H. Y. Zhang J. J. Zhang J. L. Zhang J. Q. Zhang J. W. Zhang J. X. Zhang J. Y. Zhang J. Z. Zhang Jianyu Zhang Jiawei Zhang L. M. Zhang L. Q. Zhang Lei Zhang P. Zhang Q. Y. Zhang Shuihan Zhang Shulei Zhang X. D. Zhang X. M. Zhang X. Y. Zhang X. Y. Zhang Y. Zhang Y. T. Zhang Y. H. Zhang Yan Zhang Yao Zhang Z. H. Zhang Z. L. Zhang Z. Y. Zhang Z. Y. Zhang G. Zhao J. Zhao J. Y. Zhao J. Z. Zhao Lei Zhao Ling Zhao M. G. Zhao S. J. Zhao Y. B. Zhao Y. X. Zhao Z. G. Zhao A. Zhemchugov B. Zheng J. P. Zheng Y. H. Zheng B. Zhong C. Zhong X. Zhong H. Zhou L. P. Zhou X. Zhou X. K. Zhou X. R. Zhou X. Y. Zhou Y. Z. Zhou J. Zhu K. Zhu K. J. Zhu L. X. Zhu S. H. Zhu S. Q. Zhu T. J. Zhu W. J. Zhu Y. C. Zhu Z. A. Zhu J. H. Zou J. Zu
Title: Search for the leptonic decays D * + →
Description:
We present the first search for the leptonic decays D * + → e + ν e and D * + → μ + ν μ by analyzing a data sample of electron-positron collisions recorded with the BESIII detector at center-of-mass energies between 4.
178 and 4.
226 GeV, corresponding to an integrated luminosity of 6.
32     fb − 1 .
No significant signal is observed.
The upper limits on the branching fractions for D * + → e + ν e and D * + → μ + ν μ are set to be 1.
1 × 10 − 5 and 4.
3 × 10 − 6 at 90% confidence level, respectively.
Published by the American Physical Society 2024.

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