Rights statement: © 2010 The American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Evidence for an anomalous like-sign dimuon charge asymmetry
AU - Abazov, V. M.
AU - Abbott, B.
AU - Abolins, M.
AU - Acharya, B. S.
AU - Adams, M.
AU - Adams, T.
AU - Aguilo, E.
AU - Alexeev, G. D.
AU - Alkhazov, G.
AU - Alton, A.
AU - Alverson, G.
AU - Alves, G. A.
AU - Ancu, L. S.
AU - Aoki, M.
AU - Arnoud, Y.
AU - Arov, M.
AU - Askew, A.
AU - Asman, B.
AU - Atramentov, O.
AU - Avila, C.
AU - BackusMayes, J.
AU - Badaud, F.
AU - Bagby, L.
AU - Baldin, B.
AU - Bandurin, D. V.
AU - Banerjee, S.
AU - Barberis, E.
AU - Barfuss, A. -F.
AU - Baringer, P.
AU - Barreto, J.
AU - Bartlett, J. F.
AU - Bassler, U.
AU - Beale, S.
AU - Bean, A.
AU - Begalli, M.
AU - Begel, M.
AU - Belanger-Champagne, C.
AU - Bellantoni, L.
AU - Benitez, J. A.
AU - Beri, S. B.
AU - Bernardi, G.
AU - Bertram, I.
AU - Borissov, G.
AU - Davies, G.
AU - Fox, H.
AU - Johnson, M.
AU - Love, P.
AU - Price, D.
AU - Sopczak, A.
AU - Williams, Mark
AU - D0 Collaboration
N1 - © 2010 The American Physical Society
PY - 2010/8/16
Y1 - 2010/8/16
N2 - We measure the charge asymmetry A of like-sign dimuon events in 6.1 fb(-1) of p (p) over bar collisions recorded with the D0 detector at a center-of-mass energy root s = 1.96 TeV at the Fermilab Tevatron collider. From A, we extract the like-sign dimuon charge asymmetry in semileptonic b-hadron decays: A(sl)(b) = -0.00957 +/- 0.00251 (stat) +/- 0.00146 (syst). This result differs by 3.2 standard deviations from the standard model prediction A(sl)(b)(SM) = (-2.3(0.6)(+0.5)) x 10(-4) and provides first evidence of anomalous CP violation in the mixing of neutral B mesons.
AB - We measure the charge asymmetry A of like-sign dimuon events in 6.1 fb(-1) of p (p) over bar collisions recorded with the D0 detector at a center-of-mass energy root s = 1.96 TeV at the Fermilab Tevatron collider. From A, we extract the like-sign dimuon charge asymmetry in semileptonic b-hadron decays: A(sl)(b) = -0.00957 +/- 0.00251 (stat) +/- 0.00146 (syst). This result differs by 3.2 standard deviations from the standard model prediction A(sl)(b)(SM) = (-2.3(0.6)(+0.5)) x 10(-4) and provides first evidence of anomalous CP violation in the mixing of neutral B mesons.
KW - MODEL CP-VIOLATION
KW - BARYON ASYMMETRY
KW - DETECTOR
KW - PHYSICS
UR - http://www.scopus.com/inward/record.url?scp=77956867193&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.82.032001
DO - 10.1103/PhysRevD.82.032001
M3 - Journal article
VL - 82
JO - Physical Review D
JF - Physical Review D
SN - 1550-7998
IS - 3
M1 - 032001
ER -