Abstract
The ratio of branching fractions and the difference in CP asymmetries of the decays B+ -> J/psi pi(+) and B+ -> J/psi K+ are measured using a data sample of pp collisions collected by the LHCb experiment, corresponding to an integrated luminosity of 3 fb(-1) at centre -of -mass energies of 7 and 8 TeV. The results are
B(B+ -> J/psi pi(+))/B(B+ -> J/psi K+) = (3.83 +/- 0.03 +/- 0.03) x 10(-2),
A(CP)(B+ -> J/psi pi(+)) - A(CP)(B+ -> J/psi K+) = (1.82 +/- 0.86 +/- 0.14) x 10(-2),
where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of A(CP)(B+ -> J/psi K+) provides the most precise estimate to date of CP violation in the decay B+ -> J/psi pi(+)
A(CP)(B+ -> J/psi pi(+)) = (1.91 +/- 0.89 +/- 0.16) x 10(-2).
B(B+ -> J/psi pi(+))/B(B+ -> J/psi K+) = (3.83 +/- 0.03 +/- 0.03) x 10(-2),
A(CP)(B+ -> J/psi pi(+)) - A(CP)(B+ -> J/psi K+) = (1.82 +/- 0.86 +/- 0.14) x 10(-2),
where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of A(CP)(B+ -> J/psi K+) provides the most precise estimate to date of CP violation in the decay B+ -> J/psi pi(+)
A(CP)(B+ -> J/psi pi(+)) = (1.91 +/- 0.89 +/- 0.16) x 10(-2).
Original language | English |
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Article number | 036 |
Pages (from-to) | 036 |
Number of pages | 1 |
Journal | Journal of High Energy Physics |
Volume | 03 |
Issue number | 3 |
DOIs | |
Publication status | Published - 7 Mar 2017 |
Funding
Funders | Funder number |
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Not added | 1681016 |
Science and Technology Facilities Council | ST/J004332/1, ST/N000250/1, 1641747, ST/K003410/1, 1708182, ST/H006737/1, LHCb, ST/N000331/1, GRIDPP, LHCb Upgrades, 1707993 |
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | 166208 |
Keywords
- B physics
- Branching fraction
- CP violation
- Hadron-Hadron scattering (experiments)