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        http://acervodigital.unesp.br/handle/11449/23838- Title:
 - Measurement of the CP-violation parameter of B-0 mixing and decay with p(p)over-bar ->mu mu X data
 - Abazov, V. M.
 - Abbott, B.
 - Abolins, M.
 - Acharya, B. S.
 - Adams, M.
 - Adams, T.
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 - D0Collaboration
 
- Univ Buenos Aires
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- 1550-7998
 - We measure the dimuon charge asymmetry A in p (p) over bar collisions at a center of mass energy root s=1960 GeV. The data was recorded with the D0 detector and corresponds to an integrated luminosity of approximately 1.0 fb(-1). Assuming that the asymmetry A is due to asymmetric B-0 <->(B) over bar (0) mixing and decay, we extract the CP-violation parameter of B-0 mixing and decay: ((epsilon B0))/(1+vertical bar epsilon B0 vertical bar 2)=(AB0)/(4)= -0.0023 +/- 0.0011(stat)+/- 0.0008(syst).A(B)(0) is the dimuon charge asymmetry from decays of B-0(B) over bar (0) pairs. The general case, with CP violation in both B-0 and B-s(0) systems, is also considered. Finally we obtain the forward-backward asymmetry that quantifies the tendency of mu(+) to go in the proton direction and mu(-) to go in the antiproton direction. The results are consistent with the standard model and constrain new physics.
 - 1-Nov-2006
 - Physical Review D. College Pk: American Physical Soc, v. 74, n. 9, 12 p., 2006.
 - 12
 - American Physical Soc
 - http://dx.doi.org/10.1103/PhysRevD.74.092001
 - http://hdl.handle.net/11449/23838
 - Acesso restrito
 - outro
 - http://repositorio.unesp.br/handle/11449/23838
 
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