Year: 2023
Type: preprint
Abstract: The $D^+_s\to K^+K^-μ^+ν_μ$ decay is studied based on 7.33 fb$^{-1}$ of $e^+e^-$ collision data collected with the BESIII detector at center-of-mass energies in the range from 4.128 to 4.226 GeV. The absolute branching fraction is measured as ${\mathcal B}(D^+_s\to ϕμ^+ν_μ) = (2.25\pm 0.09 \pm 0.07) \times10^{-2}$, the most precise measurement to date. Combining with the world average of ${\mathcal B}(D^+_s\to ϕe^+ν_e)$, the ratio of the branching fractions obtained is$\frac{{\mathcal B}(D^+_s\to ϕμ^+ν_μ)}{{\mathcal B}(D^+_s\to ϕe^+ν_e)} = 0.94\pm0.08$, in agreement with lepton universality. By performing a partial wave analysis, the hadronic form factor ratios at $q^{2}=0$ are extracted, finding $r_{V}=\frac{V(0)}{A_{1}(0)}=1.58\pm0.17\pm0.02$ and $r_{2}=\frac{A_{2}(0)}{A_{1}(0)}=0.71\pm0.14\pm0.02$, where the first uncertainties are statistical and the second are systematic. No significant $S$-wave contribution from $f_0(980)\to K^+K^-$ is found. The upper limit $\mathcal{B}(D_s^+\to f_0(980)μ^{+}ν_μ) \cdot{\mathcal B}(f_0(980)\to K^+K^-) < 5.45 \times 10^{-4}$ is set at 90\% confidence level.
Source: arXiv (Cornell University)
Authors: BESIII Collaboration, Ablikim, M., Achasov, M. N., Adlarson, P., Ai, X. C., Aliberti, R., Amoroso, A., An, M. R., An, Q., Bai, Y., Bakina, O., Balossino, I., Ban, Y., Batozskaya, V., Begzsuren, K., Berger, N., Berlowski, M., Bertani, M., Bettoni, D., Bianchi, F., Bianco, E., Bloms, J., Bortone, A., Boyko, I., Briere, R. A., Brueggemann, A., Cai, H., Cai, X., Calcaterra, A., Cao, G. F., Cao, N., Cetin, S. A., Chang, J. F., Chang, T. T., Chang, W. L., Che, G. R., Chelkov, G., Chen, 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, Y. Q., Chen, Z. J., Cheng, W. S., Choi, S. K., Chu, X., Cibinetto, G., Coen, S. C., Cossio, F., Cui, J. J., Dai, H. L., Dai, J. P., Dbeyssi, A., de Boer, R. E., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, B., Ding, X. X., Ding, Y., Ding, Y., Dong, J., Dong, L. Y., Dong, M. Y., Dong, X., Du, S. X., Duan, Z. 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Institutions: University of Science and Technology Liaoning, Uppsala University, Novosibirsk State University, Zhengzhou University, University of Turin, University of Science and Technology of China, Peking University, University of Münster, Wuhan University, University of Chinese Academy of Sciences, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Xinyang Normal University, Moscow Institute of Physics and Technology, Yantai University, Università degli Studi del Piemonte Orientale “Amedeo Avogadro”, Hunan University, Yunnan University, University of Oxford, University of Manchester, Zhejiang University, Fudan University, Kurchatov Institute, Petersburg Nuclear Physics Institute, University of Hawaiʻi at Mānoa, University of Hawaii System, Institute of Particle Physics, Shanghai Key Laboratory for Particle Physics and Cosmology, South China Normal University, Goethe University Frankfurt, University of the Punjab, University of Jinan, University of Groningen, Institute of Business Administration Karachi, Lanzhou University, University of South China
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: U.S. Department of Energy, Strong, European Commission, National Research Foundation, Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, Chinese Academy of Sciences, National Research Foundation of Korea, 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, Basic and Applied Basic Research Foundation of Guangdong Province
Awards: G1612394202, G1652990914, G1857410302, G1907155555, G1985211653, BESIII上正反超子对关联产生及其衰变的实验研究, G2084762544, G222768804, G2319421121, G2628562399, G2777307501, G2986027706, G3150670375, BESIII上胶球的寻找和轻介子谱的研究, G3534486373, G3790219004, G3800312211, G4250678297, G434337789, G473479712, G4799279977, G4883783264, BESIII实验类粲偶素的寻找和研究, UNDERSTANDING QCD IN THE LIGHT MESON SECTOR (WITH EMPHASIS ON MAPPING GLUONIC EXCITATIONS)..., G5926705778, Hochpräzisionsmessung des PionFormfaktors bei BESIII eine Verbesserung der hadronischen VakuumpolarisationsKorrektur zu (g2) des Myons, G6040273958, G6119985531, 北京谱仪III上Ds衰变的实验研究, G6371861488, 北京正负电子对撞机BESIII实验上粲重子Λc研究, G6746531785, G6845169765, G6927153966, Search for the scalar glueball in a coupled channel amplitude analysis of J/psi decays with the BESIII experiment, 北京谱仪III上奇异介子和奇异夸克偶素的实验研究, G783835211, G8158558910, G8396383697, G8658640858, G868043634, Suche nach seltsamen VierQuarkZuständen im CharmoniumSektor an BESIII, G8756921898, UNDERSTANDING QCD IN THE LIGHT MESON SECTOR (WITH EXPHASIS ON MAPPING GLUONIC EXCITATIONS) USING PION AND PHOTON PROBES, G8776819963, G8944097419, G904559116, G945438540, G965723986, G983105509
OpenAlex ID: W4383678264