Measurement of the Λb0 lifetime in the exclusive decay Λb0→J/ψΛ0 in pp̄ collisions at √s=1.96TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
07/06/2012
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Resumo |
We measure the Λb0 lifetime in the fully reconstructed decay Λb0→J/ψΛ0 using 10.4fb -1 of pp̄ collisions collected with the D0 detector at √s=1.96TeV. The lifetime of the topologically similar decay channel B0→J/ψKS0 is also measured. We obtain τ(Λb0)=1.303±0.075(stat)±0.035(syst)ps and τ(B0)=1.508±0.025(stat)±0.043(syst)ps. Using these measurements, we determine the lifetime ratio of τ(Λb0)/τ(B0)=0. 864±0.052(stat)±0.033(syst). © 2012 American Physical Society. |
Identificador |
http://dx.doi.org/10.1103/PhysRevD.85.112003 Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 85, n. 11, 2012. 1550-7998 1550-2368 http://hdl.handle.net/11449/73370 10.1103/PhysRevD.85.112003 2-s2.0-84862288018 2-s2.0-84862288018.pdf |
Idioma(s) |
eng |
Relação |
Physical Review D: Particles, Fields, Gravitation and Cosmology |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |