期刊
PHYSICAL REVIEW LETTERS
卷 106, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.181802
关键词
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资金
- U.S. Department of Energy
- National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Natural Sciences and Engineering Research Council of Canada
- National Science Council of the Republic of China
- Swiss National Science Foundation
- A. P. Sloan Foundation
- Bundesministerium fur Bildung und Forschung, Germany
- World Class University
- National Research Foundation of Korea
- Science and Technology Facilities Council
- Royal Society, UK
- Institut National de Physique Nucleaire et Physique des Particules/CNRS
- Russian Foundation for Basic Research
- Ministerio de Ciencia e Innovacion
- Programa Consolider-Ingenio 2010, Spain
- Slovak RD Agency
- Academy of Finland
- STFC [ST/H001077/1, ST/H001026/2, ST/H001026/1, ST/H001069/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H001069/1, ST/H001077/1, PP/E000444/1, ST/H001026/1, ST/H001026/2] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [18071002] Funding Source: KAKEN
- ICREA Funding Source: Custom
We report measurements of direct CP-violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1 fb(-1) of integrated luminosity, we obtain the first measurements of direct CP violation in bottom strange mesons, A(CP)(B-s(0) -> K- pi(+)) = +0.39 + 0.15(stat) +/- 0.08(syst), and bottom baryons, A(CP)(Lambda(0)(b) -> p pi(-)) = 0.03 +/- 0.17(stat) +/- 0.05(syst) and A(CP)(Lambda(0)(b) -> pK(-)) = +0.37 +/- 0.17(stat) +/- 0.03dsyst_. In addition, we measure CP violation in B-0 -> K+ pi(-) decays with 3.5 sigma significance, A(CP)(B-0 -> K+ pi(-)) = -0.086 +/- 0.023(stat) +/- 0.009(syst), in agreement with the current world average. Measurements of branching fractions of B-s(0) -> K+K- and B-0 -> pi(+)pi- decays are also updated.
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