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Please use this identifier to cite or link to this item: 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
Author(s): 
Institution: 
  • Univ Buenos Aires
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Simon Fraser Univ
  • Univ Alberta
  • Univ Sci & Technol China
  • Universidad de los Andes
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  • Univ Amsterdam
  • NIKHEF
  • Radboud Univ Nijmegen
  • Joint Inst Nucl Res
  • Institute for Theoretical and Experimental Physics (ITEP)
  • Moscow MV Lomonosov State Univ
  • Inst High Energy Phys
  • Petersburg Nucl Phys Inst
  • Lund Univ
  • Royal Inst Technol
  • Univ Stockholm
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  • University of Lancaster
  • Univ London Imperial Coll Sci Technol & Med
  • University of Manchester
  • University of Arizona
  • Univ Calif Berkeley
  • Lawrence Berkeley Lab
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  • University of California, Riverside (UCR)
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  • Fermilab Natl Accelerator Lab
  • Univ Illinois
  • No Illinois Univ
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ISSN: 
1550-7998
Abstract: 
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.
Issue Date: 
1-Nov-2006
Citation: 
Physical Review D. College Pk: American Physical Soc, v. 74, n. 9, 12 p., 2006.
Time Duration: 
12
Publisher: 
American Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevD.74.092001
URI: 
http://hdl.handle.net/11449/23838
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/23838
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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