TY - JOUR
T1 - Measurement of the CP-violating phase βin B0→J/Ψπ+π-decays and limits on penguin effects
AU - LHCb Collaboration
AU - Aaij, R.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Affolder, A.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Ali, S.
AU - Alkhazov, G.
AU - AlvarezCartelle, P.
AU - Alves, A. A.
AU - Amato, S.
AU - Amerio, S.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Anderson, J.
AU - Andreassen, R.
AU - Andreotti, M.
AU - Andrews, J. E.
AU - Appleby, R. B.
AU - AquinesGutierrez, O.
AU - Archilli, F.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Auriemma, G.
AU - Baalouch, M.
AU - Bachmann, S.
AU - Back, J. J.
AU - Badalov, A.
AU - Baesso, C.
AU - Baldini, W.
AU - Barlow, R. J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Batozskaya, V.
AU - Battista, V.
AU - Bay, A.
AU - Beaucourt, L.
AU - Beddow, J.
AU - Bedeschi, F.
AU - Bediaga, I.
AU - Blusk, S.
AU - SilvaCoutinho, R.
AU - Skwarnicki, T.
AU - Stone, S.
N1 - Publisher Copyright:
© 2015 The Authors.
PY - 2015
Y1 - 2015
N2 - Time-dependent CPviolation is measured in the B0→J/Ψπ+π-channel for each π+π-resonant final state using data collected with an integrated luminosity of 3.0fb-1in ppcollisions using the LHCb detector. The final state with the largest rate, J/Ψρ0(770), is used to measure the CP-violating angle 2βeffto be (41.7 ±9.6+2.8 -6.3)°. This result can be used to limit the size of penguin amplitude contributions to CPviolation measurements in, for example, B0 s→J/Ψϕdecays. Assuming approximate SU(3) flavour symmetry and neglecting higher order diagrams, the shift in the CP-violating phase ϕsis limited to be within the interval [-1.05°, +1.18°] at 95% confidence level. Changes to the limit due to SU(3) symmetry breaking effects are also discussed.
AB - Time-dependent CPviolation is measured in the B0→J/Ψπ+π-channel for each π+π-resonant final state using data collected with an integrated luminosity of 3.0fb-1in ppcollisions using the LHCb detector. The final state with the largest rate, J/Ψρ0(770), is used to measure the CP-violating angle 2βeffto be (41.7 ±9.6+2.8 -6.3)°. This result can be used to limit the size of penguin amplitude contributions to CPviolation measurements in, for example, B0 s→J/Ψϕdecays. Assuming approximate SU(3) flavour symmetry and neglecting higher order diagrams, the shift in the CP-violating phase ϕsis limited to be within the interval [-1.05°, +1.18°] at 95% confidence level. Changes to the limit due to SU(3) symmetry breaking effects are also discussed.
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U2 - 10.1016/j.physletb.2015.01.008
DO - 10.1016/j.physletb.2015.01.008
M3 - Article
AN - SCOPUS:84937644627
SN - 0370-2693
VL - 742
SP - 38
EP - 49
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1
ER -