Observation of the B-s(0) -˃ X(3872)phi Decay
- Title
- Observation of the B-s(0) -˃ X(3872)phi Decay
- Author
- 김태정
- Keywords
- QED RADIATIVE-CORRECTIONS; UNIVERSAL MONTE-CARLO; PHOTOS
- Issue Date
- 2020-10
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v. 125, no. 15, article no. 152001m page. 1-18
- Abstract
- Using a data sample of proton-proton collisions at root s = 13 TeV, corresponding to an integrated luminosity of 140 fb(-1) collected by the CMS experiment in 2016-2018, the B-s(0) -˃ X(3872)phi decay is observed. Decays into J/psi pi(+)pi(-) and K+K- are used to reconstruct, respectively, the X(3872) and phi. The ratio of the product of branching fractions B[B-s(0) -˃ X(3872)phi]B[X(3872) -˃ J/psi pi(+)pi(-)] to the product B[B-s(0) -˃psi(2S)phi]B[psi(2S) -˃ J/psi pi(+)pi(-)] is measured to be [2.21 +/- 0.29(stat) +/- 0.17(syst)]%. The ratio B[B-s(0) -˃ X(3872)phi]/B[B-0 -˃ X(3872)K-0] is found to be consistent with one, while the ratio B[B-s(0) -˃ X(3872)phi]/B[B+-˃ X(3872)K+] is two times smaller. This suggests a difference in the production dynamics of the X(3872) in B-0 and B(0)s meson decays compared to B+. The reported observation may shed new light on the nature of the X(3872) particle.
- URI
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.152001https://repository.hanyang.ac.kr/handle/20.500.11754/171926
- ISSN
- 0031-9007; 1079-7114
- DOI
- 10.1103/PhysRevLett.125.152001
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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