4.7 Article

Measurements of the branching fractions and CP asymmetries of B± → J/ψπ± and B± → ψ(2S)π± decays

Journal

PHYSICAL REVIEW D
Volume 85, Issue 9, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.85.091105

Keywords

-

Funding

  1. CAPES (Brazil)
  2. CNPq (Brazil)
  3. FAPERJ (Brazil)
  4. FINEP (Brazil)
  5. CERN (China)
  6. NSFC (China)
  7. CNRS/IN2P3 (France)
  8. BMBF (Germany)
  9. DFG (Germany)
  10. HGF (Germany)
  11. MPG (Germany)
  12. SFI (Ireland)
  13. INFN (Italy)
  14. FOM (The Netherlands)
  15. NWO (The Netherlands)
  16. SCSR (Poland)
  17. ANCS (Romania)
  18. MinES of Russia (Russia)
  19. Rosatom (Russia)
  20. MICINN (Spain)
  21. XuntaGal (Spain)
  22. GENCAT (Spain)
  23. SNSF (Switzerland)
  24. SER (Switzerland)
  25. NAS Ukraine (Ukraine)
  26. STFC (United Kingdom)
  27. NSF (USA)
  28. ERC
  29. Region Auvergne
  30. Science and Technology Facilities Council [PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/H001093/1, ST/K001361/1, ST/K001256/1, PP/E002722/1, ST/K000705/1, ST/J004820/1, ST/H006737/1, ST/K001310/1 LHCb Upgrades, ST/J005614/1, ST/H00100X/2, ST/L001144/1, ST/K001310/1, GRIDPP, ST/K00073X/1, ST/K001310/1 ATLAS Upgrades, ST/K001361/1 ATLAS Upgrades, 1208164, LHCb, PP/E000355/1, ST/H00100X/1, ST/G502412/1, ST/K001361/1 LHCb, ST/K001310/1 LHCb, ST/K00140X/1, ST/H001085/2, ST/F007094/1, ST/F008015/1, ST/K001418/1, ST/K001361/1 ATLAS, ST/L001195/1, LHCb Upgrades, ST/L001225/1, ST/M001474/1, ST/I505572/1, ST/G005974/1, ST/K001310/1 ATLAS, ST/K001361/1 MINOS/MINOS+, ST/H001069/2, ST/K000616/1, ST/M001431/1, ST/I002839/1, ST/H001093/2] Funding Source: researchfish
  31. STFC [ST/J005614/1, ST/M001431/1, LHCb, ST/I505572/1, LHCb Upgrades, ST/K001361/1, PP/E002722/1, ST/G502412/1, ST/F007094/1, ST/I002839/1, ST/H001069/2, ST/K00140X/1, ST/K000705/1, ST/J004820/1, ST/K000616/1, ST/H001085/2, ST/H006737/1, ST/H001093/1, ST/L001195/1, ST/F008015/1, ST/H00100X/1, ST/K004646/1, ST/K00073X/1, ST/G005974/1, PP/E000347/1, ST/H00100X/2, ST/L001144/1, ST/L001225/1, ST/H001093/2, PP/E000355/1] Funding Source: UKRI

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A study of B-+/- -> J/psi pi(+/-) and B-+/- -> psi(2S)pi(+/-) decays is performed with data corresponding to 0.37 fb(-1) of proton-proton collisions at root s = 7 TeV. Their branching fractions are found to be B(B-+/- -> J/psi pi(+/-)) = (3.88 +/- 0.11 +/- 0.15) x 10(-5) and B(B-+/- -> 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 A(CP)(J/psi pi) = 0.005 +/- 0.027 +/- 0.011 and A(CP)(psi(2S)pi) = 0.048 +/- 0.090 +/- 0.011 with no evidence of direct CP violation seen.

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