Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B + → J/ψπ + and B + → J/ψK +

The LHCb collaboration

doi:10.1007/JHEP03(2017)036

Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B ⁺ → J/ψπ ⁺ and B ⁺ → J/ψK ⁺

The LHCb collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

The ratio of branching fractions and the difference in CP asymmetries of the decays B⁺ → J/ψπ⁺ and B⁺ → J/ψK⁺ 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 (Formula presented.) where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of A^{C P}(B⁺→ J/ ψK⁺) provides the most precise estimate to date of CP violation in the decay B⁺ → J/ψπ⁺, (Formula presented.).

Original language	English
Article number	36
Journal	Journal of High Energy Physics
Volume	2017
Issue number	3
DOIs	https://doi.org/10.1007/JHEP03(2017)036
Publication status	Published - 1 Mar 2017

Keywords

B physics
Branching fraction
CP violation
Hadron-Hadron scattering (experiments)

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10.1007/JHEP03(2017)036

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@article{cb51db7dc7c3471e92997d9238d7f40a,

title = "Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B + → J/ψπ + and B + → J/ψK + ",

abstract = "The ratio of branching fractions and the difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+ 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 (Formula presented.) where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of AC P(B+→ J/ ψK+) provides the most precise estimate to date of CP violation in the decay B+ → J/ψπ+, (Formula presented.).",

keywords = "B physics, Branching fraction, CP violation, Hadron-Hadron scattering (experiments)",

author = "\{The LHCb collaboration\} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and \{Alvarez Cartelle\}, P. and Alves, \{A. A.\} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, \{J. E.\} and Appleby, \{R. B.\} and F. Archilli and P. d{\textquoteright}Argent and \{Arnau Romeu\}, J. and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, \{J. J.\} and A. Badalov and C. Baesso and S. Baker and V. Balagura and W. Baldini and Barlow, \{R. J.\} and C. Barschel and S. Barsuk and W. Barter and M. Baszczyk and V. Batozskaya and B. Batsukh and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Fleuret and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2017, The Author(s).",

year = "2017",

month = mar,

day = "1",

doi = "10.1007/JHEP03(2017)036",

language = "English",

volume = "2017",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

number = "3",

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T1 - Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B + → J/ψπ + and B + → J/ψK +

AU - The LHCb collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Baszczyk, M.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Battista, V.

AU - Bay, A.

AU - Beaucourt, L.

AU - Beddow, J.

AU - Fleuret, F.

AU - Maurice, E.

PY - 2017/3/1

Y1 - 2017/3/1

N2 - The ratio of branching fractions and the difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+ 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 (Formula presented.) where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of AC P(B+→ J/ ψK+) provides the most precise estimate to date of CP violation in the decay B+ → J/ψπ+, (Formula presented.).

AB - The ratio of branching fractions and the difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+ 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 (Formula presented.) where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of AC P(B+→ J/ ψK+) provides the most precise estimate to date of CP violation in the decay B+ → J/ψπ+, (Formula presented.).

KW - B physics

KW - Branching fraction

KW - CP violation

KW - Hadron-Hadron scattering (experiments)

UR - https://www.scopus.com/pages/publications/85014939647

U2 - 10.1007/JHEP03(2017)036

DO - 10.1007/JHEP03(2017)036

M3 - Article

AN - SCOPUS:85014939647

SN - 1126-6708

VL - 2017

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 3

M1 - 36

ER -

Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B ⁺ → J/ψπ ⁺ and B ⁺ → J/ψK ⁺

Abstract

Keywords

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