Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2008-12-22
Phys.Rev.Lett.103:031801,2009
Physics
High Energy Physics
High Energy Physics - Experiment
Submitted to Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.103.031801
We search for new charmless decays of neutral b-hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1 fb-1 of integrated luminosity, we report the first observation of the B0s->K-pi+ decay, with a significance of 8.2 sigma, and measure BR(B0s->K-pi+)= (5.0+-0.7(stat)+-0.8(syst))*10^{-6}. We also report the first observation of charmless b-baryon decays in the channels Lambda_b -> p pi and Lambda_b -> pK with significances of 6.0 sigma and 11.5 sigma respectively, and we measure BR(Lambda_b->p pi-) = (3.5+-0.6(stat)+-0.9(syst))*10^{-6} and BR(Lambda_b->p K-) = (5.6+-0.8(stat)+-1.5(syst))*10^{-6}. No evidence is found for the decays B0->K+K- and B0s -> pi+pi-, and we set an improved upper limit BR(B0s -> pi+pi-) < 1.2*10^{-6}$ at the 90% confidence level. All quoted branching fractions are measured using BR(B0->K+pi-)$ as a reference.
Aaltonen Timo
CDF Collaboration
No associations
LandOfFree
Observation of New Charmless Decays of Bottom Hadrons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observation of New Charmless Decays of Bottom Hadrons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of New Charmless Decays of Bottom Hadrons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-539565