Measurement of the branching fractions of doubly Cabibbo-suppressed D decays

A bstract By analyzing e + e − collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, corresponding to an integrated luminosity of 20.3 fb − 1 , we measure the branching fractions of the doubly Cabibbo-suppressed (DCS) decays D 0 → K + π − , D 0 → K + π − π − π + , D 0 → K + π − π 0 , D 0 → K + π − π 0 π 0 , D + → K + π + π − , and D + → K + K + K − . We also perform the first searches for D 0 → K + π − η , D 0 → K + π − π 0 η , D + → K + π + π − η , D + → K + ( π + π − η ) non −η ′ , and D + → K + ηη and report the first observations and evidence for some of these final states. Combining the measurements with the world averages of the corresponding Cabibbo-favored (CF) decays, the ratios of the DCS/CF branching fractions are obtained. For the D + → K + ( π + π − η ) non −η ′ decay, the ratio is significantly larger than the corresponding ratios of the other DCS decays.

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Journal
Journal of High Energy Physics
Published
2025-06-24
DOI
https://doi.org/10.1007/jhep06(2025)220
Primary Topic
Particle physics theoretical and experimental studies
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article
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article

Measurement of the branching fractions of doubly Cabibbo-suppressed D decays

X. C. Ai, X. T. Chen, J. L. Shi, X. Z. Li et al.
Journal of High Energy Physics
Particle physics theoretical and experimental studies
article

Measurement of the branching fractions of doubly Cabibbo-suppressed D decays

X. C. Ai, X. T. Chen, J. L. Shi, X. Z. Li, R. E. Mitchell, L. B. Guo, M. Bertani, Z. F. Tian, Q. M. Li, Z. Y. Chen, W. H. Tian, Y. N. Wang, S. Pacetti, Z. C. Zhou, X. B. Gao, G. Chen, X. L. Ji, Z. W. Ge, Y. S. Huang, Y. F. Liang, G. M. Liu, J. Jackson, J. K. Jiao, X. Liu, J. J. Wang, Y. F. Yang, I. Denysenko, Zengping Ning, M. H. Ye, X. S. Qin, O. B. Kolcu, L. Q. Huang, T. J. Zhu, B. Wang, Hongwei Liang, F. Z. Qi, R. P. Zhao, Yunchuan Zeng, I. Garzia, Y. Z., H. C. Zhang, J. F. Qiu, F. Liu, Y. H. Fan, G. B. Sun, D. M. Li, Z. Y. Deng, Z. X. Meng, Shuang Wang, M. Y. Dong, P. C. Hong, F. E. Maas, S. Marcello, Yanlong Wang, M. Tang, L. Lavezzi, M. Maggiora, J. F. Chang, Q. L. Niu, F. Cossio, F. Hanisch, Z. L. Zhang, X. Y. Shen, C. J. Xu, H. B. Jiang, Yaqian Wang, N. Berger, X. Pan, M. H. Liu, Y. B. Chen, A. Calcaterra, X. S. Jiang, K. J. Zhu, C. Q. Feng, Q. T. Tao, Z. H. Qin, J. L. Zhang, K. Begzsuren, L. Y. Tao, Y. Wan, S. J. Wang, Y. B. Liu, X. F. Wang, C. Li, W. D. Niu, W. M. Song, X. 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Salone, Tao Sun, P. Adlarson, D. Dedovich, Yiming Hu, Zhidan Liu, Z. Y. Zhang, L. R., Z. J. Shang, D. Y. Wang, Z. J. Chen, Yutong Feng, T. Yu, J. H. Jeong, Z. Y. Yuan, X. Y. Shan, L. H. Wu, S. L. Olsen, H. K. Sun, B. L. Wang, Z. Wang, C. Wu, Z. A. Liu, S. S. Jiang, Y. R. Wen, W. D. Li, M. L. Chen, W. Wang, Y. Q. Wang, J. Y. Shi, D. X. Lin, J. F. Shangguan, H. J. Wang, S. Wang, Y. K. Heng, T. Y. Xing, Z. H. Qu, H. Miao, E. M. Gersabeck, T. Ma, J. H. Yin, X. Shi, S. H. Zeng, J. B. Liu, H. L. Yang, L. Fava, A. Limphirat, F. Weidner, C. Chen, J. S. Zhang, J. Z. Zhao, J. P. Dai, Z. H. Zhang, J. Y. Zhao, S. Plura, K. L. He, Y. J. Zeng, He Gao, K. Goetzen, J. Y. Zhang, W. H. Shen, A. Guskov, R. Q., Bingwen Hu, N. Y. Wang, Huiying Sun, C. X. Liu, Weidong D. Zhu, N. in der Wiesche, B. Moses, F. Hölzken, O. Afedulidis, Lu Liu, X. H. Xie, X. X. Ding, Lei Zhao, Zongxia Jiao, T. Yang, L. Liu, Yong Yang, Y. Bai, Yu Zhang, Lei Zhang, B. Li, Fei Wang, Kang Li, X. R. Lyu, Yi Wang, Y. 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Nefedov, C. P. Shen, B. Zhong, X. L. Luo, J. G. Lu, S. Zhou, J. H. Yin, S. Nisar, L. Yuan, T. Holtmann, A. Kupsc, Yang Gao, X. L. Kang, Y. T. Gu, S. Jin, W. X. Gong, S. X. Du, B. C. Ke, H. Liang, F. A. Harris, Y. Liu, X. H. Mo, W. Ji, Y. Sun, Y. T. Liang, J. W. Zhang, V. Batozskaya, S. Sosio, S. J. Chen, H. C. Shi, Ch. Rosner, W. B. Yan, Tianjue Min, M. Ablikim, S. P. Wen, M. Qi, J. Libby, C. X. Yu, F. Bianchi, H. Zhou, X.D. Cai, N. Yu. Muchnoi, Jianxia Tang, L. Q. Qin, Z. Jiao, J. Yuan, V. Khachatryan, Z. G. Zhao, J. Q. Zhang, C. H. Heinz, M. Fritsch, X. B. Ji, K. Peters, J. R. Li, B. Kopf, Y. C. Zhai, S. J. Zhao, T. Luo, X. Q. Jia, B. A. Shi, T. Y. Qi, J. B. Jiao, C. H. Chen, W. L. Xu, Elena Del Bianco, Yue Xu, N. Kumar, B. L. Zhang, W. X. Fang, K. K. He, H. J. Lu, C. D. Fu, X. Zhou, M. H. Gu, J. L. Ping, S. H. Zhu, H. X. Yang, Z. Wu, Y. X. Zhao, C. Xie, X. L. Li, P. T. Ge, Z. Q. Liu, J. Zu, N. Kalantar-Nayestanaki, Z. H. Lei, Z. H. Duan, G. Wilkinson, C. Geng, H. L. Dai, X. M. Xian, S. B. Liu, M. M., M. X. Luo, M. Xu, G. Y. Tang, L. L., J. L., G. Chelkov, H. R. Qi, F. X. Lu, D. H. Wei, D. H. Zhang, X. T. Huang, Z. J. Li, Y. G. Xie, B. M. Zheng, X. Kui, G. Y. Hou, X. M. Jing, L. J. Wu, W. Gradl, Y. P. Liao, Q. M. Ma, G. S. Huang, S. L. Chen, Y. F. Yang, L. Sun, H. -R. Bao, C. L. Luo, J. L. Fu, J. F. Wu, Q. Ouyang, S. Zhang, F. C.
article en

Abstract

A bstract By analyzing e + e − collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, corresponding to an integrated luminosity of 20.3 fb − 1 , we measure the branching fractions of the doubly Cabibbo-suppressed (DCS) decays D 0 → K + π − , D 0 → K + π − π − π + , D 0 → K + π − π 0 , D 0 → K + π − π 0 π 0 , D + → K + π + π − , and D + → K + K + K − . We also perform the first searches for D 0 → K + π − η , D 0 → K + π − π 0 η , D + → K + π + π − η , D + → K + ( π + π − η ) non −η ′ , and D + → K + ηη and report the first observations and evidence for some of these final states. Combining the measurements with the world averages of the corresponding Cabibbo-favored (CF) decays, the ratios of the DCS/CF branching fractions are obtained. For the D + → K + ( π + π − η ) non −η ′ decay, the ratio is significantly larger than the corresponding ratios of the other DCS decays.

Journal of High Energy PhysicsVol. 2025(6)
Goethe University Frankfurt (DE), University of Science and Technology Liaoning (CN), University of Hawaiʻi at Mānoa (US), Liaoning University (CN), Università degli Studi del Piemonte Orientale “Amedeo Avogadro” (IT), Uppsala University (SE), University of Science and Technology of China (CN), University of Hawaii System (US), Institute of Business Administration Karachi (PK), Central South University (CN), Guangxi University (CN), Nanjing Normal University (CN), Liaoning Normal University (CN), North China Electric Power University (CN), Moscow Institute of Physics and Technology (RU), Shandong University (CN), Sun Yat-sen University (CN), COMSATS University Islamabad (PK), Hangzhou Normal University (CN), Hunan University (CN), Henan University of Science and Technology (CN), University of Groningen (NL), GSI Helmholtz Centre for Heavy Ion Research (DE), University of the Punjab (PK), Hunan Normal University (CN), Henan University (CN), Shanxi University (CN), Shanghai Jiao Tong University (CN), Yantai University (CN), University of Tarapacá (CL), South China Normal University (CN), Novosibirsk State University (RU), Yunnan University (CN), Jilin University (CN), Johannes Gutenberg University Mainz (DE), Justus-Liebig-Universität Gießen (DE), University of Ferrara (IT), Qufu Normal University (CN), Peking University (CN), Nankai University (CN), University of Münster (DE), Sichuan University (CN), Indian Institute of Technology Madras (IN), Fudan University (CN), Inner Mongolia University (CN), University of Perugia (IT), Kurchatov Institute (RU), Shandong Normal University (CN), University of Manchester (GB), Guangxi Normal University (CN), China University of Geosciences (CN), Huangshan University (CN), Joint Institute for Nuclear Research (RU), University of Jinan (CN), Henan University of Technology (CN), University of Bristol (GB), Wuhan University (CN), Zhengzhou University (CN), Soochow University (CN), University of Oxford (GB), Central China Normal University (CN), National Centre for Nuclear Research (PL), Institute of Physics and Technology (MN), Institute of Particle Physics (CA), Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara (IT), Helmholtz Institute Mainz (DE), Indiana University Bloomington (US), Istinye University (TR), Siberian Branch of the Russian Academy of Sciences (RU), Institute of Modern Physics (CN), Institute of Nuclear and Particle Physics (GR), Jilin Medical University (CN), Institute of High Energy Physics (CN), Shanxi University of Traditional Chinese Medicine (CN), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT), Piedmont University (US), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (IT), University of Chinese Academy of Sciences (CN), Hebei University (CN), Budker Institute of Nuclear Physics (RU), École Polytechnique Fédérale de Lausanne (CH), China Center of Advanced Science and Technology (CN), University of Turin (IT), Indiana University (US), Chung-Ang University (KR), Near East University (CY), Carnegie Mellon University (US), Henan Normal University (CN), Zhejiang University (CN), Lanzhou University (CN), Southeast University (CN), Renmin University of China (CN), Suranaree University of Technology (TH), Beihang University (CN), Nanjing University (CN), Ruhr University Bochum (DE), University of South China (CN), Shanxi Normal University (CN), Tsinghua University (CN)
U.S. Department of Energy, Strong, National Research Foundation, Deutsche Forschungsgemeinschaft, Swedish Foundation for International Cooperation in Research and Higher Education, National Natural Science Foundation of China, Chinese Academy of Sciences, National Research Foundation of Korea, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Istituto Nazionale di Fisica Nucleare, CAS Center for Excellence in Particle Physics, Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of High Energy Physics
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