Measurement of the (B^0s->J/ψφ) branching fraction at CDF

Details Measurement of the (B^0s->J/ψφ) branching fraction at CDF Measurement of the (B^0s->J/ψφ) branching fraction at CDF

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.h9004k&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #H9.004

Physics

Scientific paper

We present a measurement of the branching fraction of the decay (B^0s->J/ψφ) with the Collider Detector at Fermilab. Using a data sample corresponding to an integrated luminosity of (10,-1) of (pp) collisions at (√s=1.96,), we utilize a low transverse momentum dimuon trigger to acquire a large sample of (J/ψ->+circ;-circ;) decays. We form fully reconstructed (B^0s->J/ψφ) and (B^0->J/ψK^*) candidates using information from the central tracking system and determine the branching fraction of (B^0s->J/ψφ) by normalizing with the (B^0->J/ψK^*) decay. The measurement improves the current world average value and can be used to extract information about the ratio of fragmentation fractions (fs/fd) between (B^0s) and (B^0) production rates.

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