Measurement of CP violation in B 0 → J/ψK S 0 and B 0 → ψ(2S)K S 0 decays

Standard

Measurement of CP violation in B ⁰ → J/ψK _S ⁰ and B ⁰ → ψ(2S)K _S ⁰ decays. / The LHCb Collaboration.

In: Journal of High Energy Physics, Vol. 2017, No. 11, 170, 01.11.2017.

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

Harvard

The LHCb Collaboration 2017, 'Measurement of CP violation in B ⁰ → J/ψK _S ⁰ and B ⁰ → ψ(2S)K _S ⁰ decays', Journal of High Energy Physics, vol. 2017, no. 11, 170. https://doi.org/10.1007/JHEP11(2017)170

APA

The LHCb Collaboration (2017). Measurement of CP violation in B ⁰ → J/ψK _S ⁰ and B ⁰ → ψ(2S)K _S ⁰ decays. Journal of High Energy Physics, 2017(11), [170]. https://doi.org/10.1007/JHEP11(2017)170

Vancouver

The LHCb Collaboration. Measurement of CP violation in B ⁰ → J/ψK _S ⁰ and B ⁰ → ψ(2S)K _S ⁰ decays. Journal of High Energy Physics. 2017 Nov 1;2017(11):170. doi: 10.1007/JHEP11(2017)170

Author

The LHCb Collaboration. / Measurement of CP violation in B ⁰ → J/ψK _S ⁰ and B ⁰ → ψ(2S)K _S ⁰ decays. In: Journal of High Energy Physics. 2017 ; Vol. 2017, No. 11.

BibTeX

@article{61a1a8f676c045b6b8ccd85968d862d5,

title = "Measurement of CP violation in B 0 → J/ψK S 0 and B 0 → ψ(2S)K S 0 decays",

abstract = "A measurement is presented of decay-time-dependent CP violation in the decays B0 → J/ψ KS 0 and B0 → ψ(2S)KS 0, where the J/ψ is reconstructed from two electrons and the ψ(2S) from two muons. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. The CP -violation observables are measured to beC(B0→J/ψKS0)=0.12±0.07±0.02,S(B0→J/ψKS0)=0.83±0.08±0.01,C(B0→ψ(2S)KS0)=−0.05±0.10±0.01,S(B0→ψ(2S)KS0)=0.84±0.10±0.01,where C describes CP violation in the direct decay, and S describes CP violation in the interference between the amplitudes for the direct decay and for the decay after B0− B¯ 0 oscillation. The first uncertainties are statistical and the second are systematic. The two sets of results are compatible with the previous LHCb measurement using B0 → J/ψ KS 0 decays, where the J/ψ meson was reconstructed from two muons. The averages of all three sets of LHCb results areC(B0→[cc¯]KS0)=−0.017±0.029,S(B0→[cc¯]KS0)=0.760±0.034,under the assumption that higher-order contributions to the decay amplitudes are negligible. The uncertainties include statistical and systematic contributions.",

keywords = "B physics, CKM angle beta, CP violation, Flavor physics, 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 {Alfonso Albero}, A. 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 A. Baranov and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and F. Baryshnikov and V. Batozskaya and A. Bondar and S. Eidelman and P. Krokovny and L. Shekhtman and V. Vorobyev",

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

year = "2017",

month = nov,

day = "1",

doi = "10.1007/JHEP11(2017)170",

language = "English",

volume = "2017",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer US",

number = "11",

}

RIS

TY - JOUR

T1 - Measurement of CP violation in B 0 → J/ψK S 0 and B 0 → ψ(2S)K S 0 decays

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 - Alfonso Albero, A.

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 - Baranov, A.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Bondar, A.

AU - Eidelman, S.

AU - Krokovny, P.

AU - Shekhtman, L.

AU - Vorobyev, V.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - A measurement is presented of decay-time-dependent CP violation in the decays B0 → J/ψ KS 0 and B0 → ψ(2S)KS 0, where the J/ψ is reconstructed from two electrons and the ψ(2S) from two muons. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. The CP -violation observables are measured to beC(B0→J/ψKS0)=0.12±0.07±0.02,S(B0→J/ψKS0)=0.83±0.08±0.01,C(B0→ψ(2S)KS0)=−0.05±0.10±0.01,S(B0→ψ(2S)KS0)=0.84±0.10±0.01,where C describes CP violation in the direct decay, and S describes CP violation in the interference between the amplitudes for the direct decay and for the decay after B0− B¯ 0 oscillation. The first uncertainties are statistical and the second are systematic. The two sets of results are compatible with the previous LHCb measurement using B0 → J/ψ KS 0 decays, where the J/ψ meson was reconstructed from two muons. The averages of all three sets of LHCb results areC(B0→[cc¯]KS0)=−0.017±0.029,S(B0→[cc¯]KS0)=0.760±0.034,under the assumption that higher-order contributions to the decay amplitudes are negligible. The uncertainties include statistical and systematic contributions.

AB - A measurement is presented of decay-time-dependent CP violation in the decays B0 → J/ψ KS 0 and B0 → ψ(2S)KS 0, where the J/ψ is reconstructed from two electrons and the ψ(2S) from two muons. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. The CP -violation observables are measured to beC(B0→J/ψKS0)=0.12±0.07±0.02,S(B0→J/ψKS0)=0.83±0.08±0.01,C(B0→ψ(2S)KS0)=−0.05±0.10±0.01,S(B0→ψ(2S)KS0)=0.84±0.10±0.01,where C describes CP violation in the direct decay, and S describes CP violation in the interference between the amplitudes for the direct decay and for the decay after B0− B¯ 0 oscillation. The first uncertainties are statistical and the second are systematic. The two sets of results are compatible with the previous LHCb measurement using B0 → J/ψ KS 0 decays, where the J/ψ meson was reconstructed from two muons. The averages of all three sets of LHCb results areC(B0→[cc¯]KS0)=−0.017±0.029,S(B0→[cc¯]KS0)=0.760±0.034,under the assumption that higher-order contributions to the decay amplitudes are negligible. The uncertainties include statistical and systematic contributions.

KW - B physics

KW - CKM angle beta

KW - CP violation

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

UR - http://www.scopus.com/inward/record.url?scp=85037654771&partnerID=8YFLogxK

U2 - 10.1007/JHEP11(2017)170

DO - 10.1007/JHEP11(2017)170

M3 - Article

AN - SCOPUS:85037654771

VL - 2017

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 11

M1 - 170

ER -

ID: 9953395