Measurement of the Λc+ Lifetime

被引：4
|
作者：
Abudinen, F.
Aggarwal, L.
Ahmed, H.
Ahn, J. K.
Aihara, H.
Akopov, N.
Aloisio, A.
Ky, N. Anh
Asner, D. M.
Atmacan, H.
Aushev, T.
Aushev, V.
Babu, V.
Bae, H.
Bambade, P.
Banerjee, Sw.
Bansal, S.
Baudot, J.
Bauer, M.
Baur, A.
Beaubien, A.
Becker, J.
Bennett, J., V
Bernieri, E.
Bernlochner, F. U.
Bertacchi, V.
Bertemes, M.
Bertholet, E.
Bessner, M.
Bettarini, S.
Bhardwaj, V.
Bianchi, F.
Bilka, T.
Biswas, D.
Bodrov, D.
Bolz, A.
Bonvicini, G.
Bozek, A.
Bracko, M.
Branchini, P.
Briere, R. A.
Browder, T. E.
Budano, A.
Bussino, S.
Campajola, M.
Cao, L.
Casarosa, G.
Cecchi, C.
Chang, M. -C.
Chang, P.
机构：
来源：
PHYSICAL REVIEW LETTERS | 2023年 / 130卷 / 07期
基金：
欧盟地平线“2020”; 日本学术振兴会; 新加坡国家研究基金会; 中国国家自然科学基金; 以色列科学基金会; 澳大利亚研究理事会; 加拿大自然科学与工程研究理事会; 奥地利科学基金会; 欧洲研究理事会; 美国国家科学基金会;
关键词：
PRECISION-MEASUREMENTS;
D O I：
10.1103/PhysRevLett.130.071802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An absolute measurement of the A+c lifetime is reported using A+c -> pK-pi+ decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the (sic)(4S) resonance, is 207.2 fb(-1). The result, tau(Lambda(+)(c)) = 203.20 10.89 10.77 fs, where the first uncertainty is statistical and the second systematic, is the most precise measurement to date and is consistent with previous determinations.
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页数：7
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