Scientific article
Open access

Measurements of Direct CP Violating Asymmetries in Charmless Decays of Strange Bottom Mesons and Bottom Baryons

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 106, no. 18, 181802
Publication date2011

We report measurements of direct CP—violating asymmetries in charmless decays of neutral bottom 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 obtain the first measurements of direct CP violation in bottom strange mesons, ACP(B0s→K−π+)=+0.39±0.15(stat)±0.08(syst), and bottom baryons, ACP(Λ0b→pπ−)=+0.03±0.17(stat)±0.05(syst) and ACP(Λ0b→pK−)=+0.37±0.17(stat)±0.03(syst). In addition, we measure CP violation in B0→K+π− decays with 3.5σ significance, ACP(B0→K+π−)=−0.086±0.023(stat)±0.009(syst), in agreement with the current world average. Measurements of branching fractions of B0s→K+K− and B0→π+π− decays are also updated.

Citation (ISO format)
CDF Collaboration. Measurements of Direct <em>CP</em> Violating Asymmetries in Charmless Decays of Strange Bottom Mesons and Bottom Baryons. In: Physical review letters, 2011, vol. 106, n° 18, p. 181802. doi: 10.1103/PhysRevLett.106.181802
Main files (1)
Article (Published version)
ISSN of the journal0031-9007

Technical informations

Creation07/15/2014 11:52:00 AM
First validation07/15/2014 11:52:00 AM
Update time03/14/2023 9:26:49 PM
Status update03/14/2023 9:26:49 PM
Last indexation01/16/2024 11:20:15 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack