TY - JOUR
T1 - Evidence for an anomalous like-sign dimuon charge asymmetry
AU - DØ Collaboration
AU - Hoeneisen, Bruce
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
PY - 2010
Y1 - 2010
N2 - We measure the charge asymmetry A ≡ (N++ − N−−)/(N++ + N−−) of like-sign dimuon events in 6.1 fb−1 of pp¯ collisions recorded with the D0 detector at a center-of-mass energy √s = 1.96 TeV at the Fermilab Tevatron collider. From A we extract the like-sign dimuon charge asymmetry in semileptonic b-hadron decays: Ab sl = −0.00957 ± 0.00251(stat) ± 0.00146 (sys). It differs by 3.2 standard deviations from the standard model prediction Ab sl(SM) = (−2.3+ − 0 0 5 6) × 10−4, and provides the first evidence of anomalous CP violation in the mixing of neutral B mesons.
AB - We measure the charge asymmetry A ≡ (N++ − N−−)/(N++ + N−−) of like-sign dimuon events in 6.1 fb−1 of pp¯ collisions recorded with the D0 detector at a center-of-mass energy √s = 1.96 TeV at the Fermilab Tevatron collider. From A we extract the like-sign dimuon charge asymmetry in semileptonic b-hadron decays: Ab sl = −0.00957 ± 0.00251(stat) ± 0.00146 (sys). It differs by 3.2 standard deviations from the standard model prediction Ab sl(SM) = (−2.3+ − 0 0 5 6) × 10−4, and provides the first evidence of anomalous CP violation in the mixing of neutral B mesons.
UR - http://www.scopus.com/inward/record.url?scp=85053768025&partnerID=8YFLogxK
M3 - Artículo de la conferencia
AN - SCOPUS:85053768025
SN - 1824-8039
VL - 120
JO - Proceedings of Science
JF - Proceedings of Science
T2 - 35th International Conference of High Energy Physics, ICHEP 2010
Y2 - 22 July 2010 through 28 July 2010
ER -