Measurements of the branching fractions and CP asymmetries of B+ to J/psi pi+ and B+ to psi(2S) pi+ decays

Abstract

A study of B+ to J/psi pi+ and B+ to psi(2S) pi+ decays is performed with data corresponding to 0.37 fb-1 of proton-proton collisions at sqrt(s)=7 TeV. Their branching fractions are found to be B(B+ to J/psi pi+) = (3.88 +- 0.11 +- 0.15) x 10^{-5} and B(B+ to psi(2S) pi+) = (2.52 +- 0.26 +- 0.15) x 10^{-5}, where the first uncertainty is related to the statistical size of the sample and the second quantifies systematic effects. The measured CP asymmetries in these modes are ACP(J/psi pi) = 0.005 +- 0.027 +- 0.011 and ACP(psi(2S) pi) = 0.048 +- 0.090 +- 0.011 with no evidence of direct CP violation seen.

References in corpus (12)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Decay Chain Fitting with a Kalman Filter
• The RooFit toolkit for data modeling
• First evidence of direct CP violation in charmless two-body decays of Bs mesons
• Study of direct CP violation in $B^{\pm }\to J/\psi K^{\pm }({\pi }^{\pm })$ decays
• Study of B^+/- --> J/psi pi^+/- and B^+/- --> J/psi K^+/- Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation
• More on direct CP violation in b -> d + J/psi decays
• Direct CP violation in b -> d J/ψdecays
• Observation of B^{\pm} \to χ_{c1} π^{\pm} and Search for Direct CP Violation
• Observation of $B^{\pm }\to \psi (2S){\pi }^{\pm }$ and search for direct CP-violation

Cited by in corpus (25)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Implications of LHCb measurements and future prospects
• Measurement of CP violation in the phase space of $B^{\pm }\to K^{\pm }{\pi }^{+}{\pi }^{-}$ and $B^{\pm }\to K^{\pm }{K}^{+}{K}^{-}$ decays
• Measurements of $B_c^{+}$ production and mass with the $B_c^{+}\to J/\psi {\pi }^{+}$ decay
• First observation of the decay $B_c^{+}\to J/\psi K^{+}$
• Measurement of $B_c^{+}$ production in proton-proton collisions at $\sqrt{s}=8$ TeV
• Study of the rare decays of $B_s^0$ and $B^0$ into muon pairs from data collected during the LHC Run 1 with the ATLAS detector
• Measurement of the flavour-specific CP-violating asymmetry $a_{\mathrm{sl}}^s$ in $B_s^0$ decays
• Determining weak phases from B->J/Psi P decays
• Measurement of $CP$ observables in $B^{\pm }\to D{K}^{\pm }$ and $B^{\pm }\to D{\pi }^{\pm }$ with two- and four-body $D$ decays
• CP violation in the B system
• Observation of the suppressed ADS modes $B^{\pm }\to [{\pi }^{\pm }{K}^{\mp }{\pi }^{+}{\pi }^{-}{]}_D{K}^{\pm }$ and $B^{\pm }\to [{\pi }^{\pm }{K}^{\mp }{\pi }^{+}{\pi }^{-}{]}_D{\pi }^{\pm }$
• A study of CP violation in $B^{\pm }\to D{K}^{\pm }$ and $B^{\pm }\to D{\pi }^{\pm }$ decays with $D\to K_{\mathrm{S}}^0{K}^{\pm }{\pi }^{\mp }$ final states
• Branching ratio measurements and isospin violation in B-meson decays
• Study of $B^{-}\to D{K}^{-}{\pi }^{+}{\pi }^{-}$ and $B^{-}\to D{\pi }^{-}{\pi }^{+}{\pi }^{-}$ decays and determination of the CKM angle $\gamma$
• Measurement of direct CP violation parameters in B^+/- -> J/ψK^+/- and B^+/- ->J/psi pi^+/- decays with 10.4 fb^-1 of Tevatron data
• Measurement of $CP$ asymmetries in $D^{\pm }\to {\eta }^{\prime }{\pi }^{\pm }$ and $D_s^{\pm }\to {\eta }^{\prime }{\pi }^{\pm }$ decays
• Measurement of the $B_c^{\pm }$ production cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• First evidence for direct CP violation in beauty to charmonium decays
• Measurement of the ratio of branching fractions and difference in $CP$ asymmetries of the decays $B^{+}\to J/\psi {\pi }^{+}$ and $B^{+}\to J/\psi K^{+}$
• Measurement of the direct CP-violating parameter A_CP in the decay D+ -> K- pi+ pi+
• Penguin contributions to B to J/Psi P Decays
• Results on direct CP violation in B decays in LHCb