Search for the radiative decay $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$

A bstract Using 7.33 fb − 1 of e + e − collision data samples collected with the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, we search for the radiative decay $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>γρ</mml:mi> <mml:msup> <mml:mfenced> <mml:mn>770</mml:mn> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msup> </mml:math> for the first time. A hint of $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>γρ</mml:mi> <mml:msup> <mml:mfenced> <mml:mn>770</mml:mn> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msup> </mml:math> is observed with a statistical significance of 2.5 σ . The branching fraction of $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>γρ</mml:mi> <mml:msup> <mml:mfenced> <mml:mn>770</mml:mn> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msup> </mml:math> is measured to be (2.2 ± 0.9 stat . ± 0.2 syst . ) × 10 − 4 , corresponding to an upper limit of 6.1 × 10 − 4 at the 90% confidence level.

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Journal
Journal of High Energy Physics
Published
2024-11-21
DOI
https://doi.org/10.1007/jhep11(2024)119
Primary Topic
Particle physics theoretical and experimental studies
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article

Search for the radiative decay $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$

Z. P. Yao, T. Xiang, X. C. Ai, X. L. Wang et al.
Journal of High Energy Physics
Particle physics theoretical and experimental studies
article

Search for the radiative decay $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$

Z. P. Yao, T. Xiang, X. C. Ai, X. L. Wang, K. Sun, X. Z. Li, D. H. Wei, L. K. Li, T. Chen, M. Pelizaeus, Z. J. Chen, Q. M. Li, Z. Y. Chen, S. Garbolino, D. H. Zhang, Feng Liu, Z. C. Zhou, H. X. Yang, X. B. Gao, H. Liu, J. K. Jiao, T. J. Min, Feng Li, L. Yan, J. F. Chang, V. Khachatryan, N. Kumar, C. Z. Yuan, P. L. Liu, Y. G. Li, Y. H. Zheng, R. P. Zhao, J. F. Qiu, Y. T. Zhang, Y. Z., J. Y. Liu, L. Liu, J. Y. Shi, G. S. Huang, F. Nerling, R. E. Mitchell, M. Y. Dong, M. Kuessner, S. A. Cetin, X. F. Wang, X. Liu, X. M. Zhang, S. Marcello, H.S. Chen, A. Denig, X. Wang, Miaohui Li, F. Hanisch, Y. J. Song, Yaqian Wang, M. Scodeggio, L. L., H. B. Jiang, T. Holtmann, X. D. Yu, A. Calcaterra, T. J. Jiang, F. Feldbauer, W. D. Li, S. Janchiv, T. Li, A. Bortone, J. J. Zhang, Z. H. Zhang, L. Y. Tao, G. Chelkov, S. Kabana, Lei Zhao, W. Y. Sun, Y. Zhao, Q. Y. Zhang, M. Kavatsyuk, Z. X. Meng, W. D. Niu, X. K. Zhou, Y. Y. Ji, W. M. Song, H. H. Liu, C. P. Shen, L. G. Shao, G. Y. Hou, N. Berger, R. 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article en

Abstract

A bstract Using 7.33 fb − 1 of e + e − collision data samples collected with the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, we search for the radiative decay $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>γρ</mml:mi> <mml:msup> <mml:mfenced> <mml:mn>770</mml:mn> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msup> </mml:math> for the first time. A hint of $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>γρ</mml:mi> <mml:msup> <mml:mfenced> <mml:mn>770</mml:mn> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msup> </mml:math> is observed with a statistical significance of 2.5 σ . The branching fraction of $$ {D}_s^{+}\to \gamma \rho {(770)}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>γρ</mml:mi> <mml:msup> <mml:mfenced> <mml:mn>770</mml:mn> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msup> </mml:math> is measured to be (2.2 ± 0.9 stat . ± 0.2 syst . ) × 10 − 4 , corresponding to an upper limit of 6.1 × 10 − 4 at the 90% confidence level.

Journal of High Energy PhysicsVol. 2024(11)
Goethe University Frankfurt (DE), University of Science and Technology Liaoning (CN), 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), 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), Bristol Robotics Laboratory (GB), 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, 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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