Measurement of the Absolute Branching Fraction of D-s(+) -> tau(+)nu(tau) via tau(+) -> e(+)nu(e)(nu)over-bar(tau)

doi:10.1103/PhysRevLett.127.171801

	Measurement of the Absolute Branching Fraction of D-s(+) -> tau(+)nu(tau) via tau(+) -> e(+)nu(e)(nu)over-bar(tau)
	Ablikim, M.68; Achasov, M. N.36,77; Adlarson, P.10; Ahmed, S.82; Albrecht, M.71; Aliberti, R.26; Amoroso, A.6,7,9; An, M. R.30; An, Q.3,48,49; Bai, X. H.21
刊名	PHYSICAL REVIEW LETTERS
	2021-10-19
卷号	127 期号:16 页码:9
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.127.171801
通讯作者	Ablikim, M.()
英文摘要	Using a dataset of 6.32 fb(-1) of e(+)e(-) annihilation data collected with the BESIII detector at center-ofmass energies between 4178 and 4226 MeV, we have measured the absolute branching fraction of the leptonic decay D-s(+) -> tau(+)nu(tau) via tau(+) -> e(+)nu(e)(nu) over bar (tau), and find BDs+->tau+nu tau = (5.27 +/- 0.10 +/- 0.12) x 10(-2), where the first uncertainty is statistical and the second is systematic. The precision is improved by a factor of 2 compared to the previous best measurement. Combining with fD thorns from lattice quantum chromodynamics calculations or the vertical bar V-cs vertical bar from the CKMfitter group, we extract vertical bar V-cs vertical bar = 0.978 +/- 0.009 +/- 0.012 and f(DS+) = (251.1 +/- 2.4 +/- 3.0) MeV, respectively. Combining our result with the world averages of BDs+->tau+nu tau and BDS+->mu+nu mu, we obtain the ratio of the branching fractions BDS+->tau+nu tau/BDs+->mu+nu mu = 9.72 +/- 0.37, which is consistent with the standard model prediction of lepton flavor universality.
资助项目	National Key R&D Program of China[2020YFA0406400] ; National Key R&D Program of China[2020YFA0406300] ; National Natural Science Foundation of China (NSFC)[12105077] ; National Natural Science Foundation of China (NSFC)[11805037] ; National Natural Science Foundation of China (NSFC)[11875054] ; National Natural Science Foundation of China (NSFC)[11625523] ; National Natural Science Foundation of China (NSFC)[11635010] ; National Natural Science Foundation of China (NSFC)[11735014] ; National Natural Science Foundation of China (NSFC)[11822506] ; National Natural Science Foundation of China (NSFC)[11835012] ; National Natural Science Foundation of China (NSFC)[11875122] ; National Natural Science Foundation of China (NSFC)[11935015] ; National Natural Science Foundation of China (NSFC)[11935016] ; National Natural Science Foundation of China (NSFC)[11935018] ; National Natural Science Foundation of China (NSFC)[11961141012] ; National Natural Science Foundation of China (NSFC)[12022510] ; National Natural Science Foundation of China (NSFC)[12025502] ; National Natural Science Foundation of China (NSFC)[12035009] ; National Natural Science Foundation of China (NSFC)[12035013] ; National Natural Science Foundation of China (NSFC)[12061131003] ; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program ; NSFC[U1832121] ; NSFC[U1732263] ; NSFC[U1832207] ; CAS[U1832121] ; CAS[U1732263] ; CAS[U1832207] ; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH040] ; 100 Talents Program of CAS ; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology ; Excellent Youth Foundation of Henan Province[212300410010] ; youth talent support program of Henan Province[ZYQR201912178] ; Program for Innovative Research Team in University of Henan Province[19IRTSTHN018] ; ERC[758462] ; European Union Horizon 2020 research and innovation programme under Marie Sklodowska-Curie Grant[894790] ; German Research Foundation DFG[443159800] ; German Research Foundation DFG[CRC 1044] ; German Research Foundation DFG[FOR 2359] ; German Research Foundation DFG[GRK 214] ; Istituto Nazionale di Fisica Nucleare, Italy ; Ministry of Development of Turkey[DPT2006K-120470] ; National Science and Technology fund ; Olle Engkvist Foundation[200-0605] ; STFC (United Kingdom) ; Knut and Alice Wallenberg Foundation (Sweden)[2016.0157] ; Royal Society, UK[DH140054] ; Royal Society, UK[DH160214] ; Swedish Research Council ; U.S. Department of Energy[DE-FG02-05ER41374] ; U.S. Department of Energy[DE-SC-0012069]
WOS关键词	DECAYS
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000708668600003
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program ; NSFC ; CAS ; CAS Key Research Program of Frontier Sciences ; 100 Talents Program of CAS ; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology ; Excellent Youth Foundation of Henan Province ; youth talent support program of Henan Province ; Program for Innovative Research Team in University of Henan Province ; ERC ; European Union Horizon 2020 research and innovation programme under Marie Sklodowska-Curie Grant ; German Research Foundation DFG ; Istituto Nazionale di Fisica Nucleare, Italy ; Ministry of Development of Turkey ; National Science and Technology fund ; Olle Engkvist Foundation ; STFC (United Kingdom) ; Knut and Alice Wallenberg Foundation (Sweden) ; Royal Society, UK ; Swedish Research Council ; U.S. Department of Energy
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/136015]
专题	中国科学院近代物理研究所
通讯作者	Ablikim, M.
作者单位	1.Univ Oxford, Keble Rd, Oxford OX13 RH, England 2.Univ Sci & Technol Liaoning, Anshan 114051, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Univ South China, Hengyang 421001, Peoples R China 5.Univ Punjab, Lahore 54590, Pakistan 6.Univ Turin, I-10125 Turin, Italy 7.Univ Turin, Ist Nazl Fis Nucl, I-10125 Turin, Italy 8.Univ Piemonte Orientale, I-15121 Alessandria, Italy 9.Ist Nazl Fis Nucl, I-10125 Turin, Italy 10.Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden
推荐引用方式 GB/T 7714	Ablikim, M.,Achasov, M. N.,Adlarson, P.,et al. Measurement of the Absolute Branching Fraction of D-s(+) -> tau(+)nu(tau) via tau(+) -> e(+)nu(e)(nu)over-bar(tau)[J]. PHYSICAL REVIEW LETTERS,2021,127(16):9.
APA	Ablikim, M..,Achasov, M. N..,Adlarson, P..,Ahmed, S..,Albrecht, M..,...&Zou, J. H..(2021).Measurement of the Absolute Branching Fraction of D-s(+) -> tau(+)nu(tau) via tau(+) -> e(+)nu(e)(nu)over-bar(tau).PHYSICAL REVIEW LETTERS,127(16),9.
MLA	Ablikim, M.,et al."Measurement of the Absolute Branching Fraction of D-s(+) -> tau(+)nu(tau) via tau(+) -> e(+)nu(e)(nu)over-bar(tau)".PHYSICAL REVIEW LETTERS 127.16(2021):9.