Number of the records: 1
Evidence for an anomalous like-sign dimuon charge asymmetry
- 1.
SYSNO ASEP 0351662 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evidence for an anomalous like-sign dimuon charge asymmetry Author(s) Abazov, V. M. (RU)
Abbott, B. (US)
Abolins, M. (US)
Kupčo, Alexander (FZU-D) RID, ORCID
Lokajíček, Miloš (FZU-D) RID, ORCIDSource Title Physical Review D: Particles, Fields, Gravitation and Cosmology. - : American Physical Society - ISSN 1550-7998
Roč. 82, č. 3 (2010), 032001/1-032001/30Number of pages 31 s. Language eng - English Country US - United States Keywords D0 ; dimuon ; asymmetry ; mesons Subject RIV BF - Elementary Particles and High Energy Physics R&D Projects LC527 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LA08047 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100502 - FZU-D (2005-2011) UT WOS 000280963800001 DOI 10.1103/PhysRevD.82.032001 Annotation We measure the charge asymmetry $A$ of like-sign dimuon events in 6.1 fb$^{-1}$ of $p/bar{p}$ collisions recorded with the D0 detector at a center-of-mass energy $/sqrt{s} = 1.96$ TeV at the Fermilab Tevatron collider. From $A$, we extract the like-sign dimuon charge asymmetry in semileptonic $b$-hadron decays: $/aslb = -0.00957 /pm 0.00251 ({/rm stat}) /pm 0.00146 ({/rm syst})$. This result differs by 3.2 standard deviations from the standard model prediction $/aslb(SM) = (-2.3^{+0.5}_{-0.6}) /times 10^{-4}$ and provides first evidence of anomalous CP-violation in the mixing of neutral $B$ mesons. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2011
Number of the records: 1