We have measured the number of like-sign (LS) and opposite-sign (OS) lepton pairs arising from double semileptonic decays of b and (b) over bar hadrons, pair produced at the Fermilab Tevatron collider. The data samples were collected with the Collider Detector at Fermilab during the 1992-1995 collider run by triggering on the existence of mumu or emu candidates in an event. The observed ratio of LS to OS dileptons leads to a measurement of the average time-integrated mixing probability of all produced b-flavored hadrons which decay weakly, (chi) over bar =0.152+/-0.007 (stat)+/-0.011 (syst), that is significantly larger than the world average (chi) over bar =0.118+/-0.005.

D., A., T., A., H., A., M. G., A., D., A., D., A., et al. (2004). Measurement of the average time-integrated mixing probability of b-flavored hadrons produced at the Fermilab Tevatron. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 69(1) [10.1103/PhysRevD.69.012002].

Measurement of the average time-integrated mixing probability of b-flavored hadrons produced at the Fermilab Tevatron

PAOLETTI, RICCARDO;
2004-01-01

Abstract

We have measured the number of like-sign (LS) and opposite-sign (OS) lepton pairs arising from double semileptonic decays of b and (b) over bar hadrons, pair produced at the Fermilab Tevatron collider. The data samples were collected with the Collider Detector at Fermilab during the 1992-1995 collider run by triggering on the existence of mumu or emu candidates in an event. The observed ratio of LS to OS dileptons leads to a measurement of the average time-integrated mixing probability of all produced b-flavored hadrons which decay weakly, (chi) over bar =0.152+/-0.007 (stat)+/-0.011 (syst), that is significantly larger than the world average (chi) over bar =0.118+/-0.005.
2004
D., A., T., A., H., A., M. G., A., D., A., D., A., et al. (2004). Measurement of the average time-integrated mixing probability of b-flavored hadrons produced at the Fermilab Tevatron. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 69(1) [10.1103/PhysRevD.69.012002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39092
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