Lifetime difference and CP-violating phase in the B-s(0) system
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
20/05/2014
20/05/2014
23/03/2007
|
| Resumo |
From an analysis of the decay B-s(0)-> J/psi phi, we obtain the width difference between the light and heavy mass eigenstates Delta Gamma equivalent to(Gamma(L)-Gamma(H))=0.17 +/- 0.09(stat)+/- 0.02(syst) ps(-1) and the CP-violating phase phi(s)=-0.79 +/- 0.56(stat)(-0.01)(+0.14)(syst). Under the hypothesis of no CP violation (phi(s)equivalent to 0), we obtain 1/Gamma=tau/(B-s(0))=1.52 +/- 0.08(stat)(-0.03)(+0.01)(syst) ps and Delta Gamma=0.12(-0.10)(+0.08)(stat)+/- 0.02(syst) ps(-1). The data sample corresponds to an integrated luminosity of about 1.1 fb(-1) accumulated with the D0 detector at the Fermilab Tevatron collider. This is the first direct measurement of the CP-violating mixing phase in the B-s(0) system. |
| Formato |
7 |
| Identificador |
http://dx.doi.org/10.1103/PhysRevLett.98.121801 Physical Review Letters. College Pk: Amer Physical Soc, v. 98, n. 12, 7 p., 2007. 0031-9007 http://hdl.handle.net/11449/23995 10.1103/PhysRevLett.98.121801 WOS:000245135400012 WOS000245135400012.pdf |
| Idioma(s) |
eng |
| Publicador |
Amer Physical Soc |
| Relação |
Physical Review Letters |
| Direitos |
closedAccess |
| Tipo |
info:eu-repo/semantics/article |