Measurement of CP violation in the Bs0→ϕϕ decay and search for the B 0 → ϕϕ decay

Standard

Measurement of CP violation in the Bs0→ϕϕ decay and search for the B ⁰ → ϕϕ decay. / The LHCb Collaboration.

In: Journal of High Energy Physics, Vol. 2019, No. 12, 155, 01.12.2019.

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

Harvard

The LHCb Collaboration 2019, 'Measurement of CP violation in the Bs0→ϕϕ decay and search for the B ⁰ → ϕϕ decay', Journal of High Energy Physics, vol. 2019, no. 12, 155. https://doi.org/10.1007/JHEP12(2019)155

APA

The LHCb Collaboration (2019). Measurement of CP violation in the Bs0→ϕϕ decay and search for the B ⁰ → ϕϕ decay. Journal of High Energy Physics, 2019(12), [155]. https://doi.org/10.1007/JHEP12(2019)155

Vancouver

The LHCb Collaboration. Measurement of CP violation in the Bs0→ϕϕ decay and search for the B ⁰ → ϕϕ decay. Journal of High Energy Physics. 2019 Dec 1;2019(12):155. doi: 10.1007/JHEP12(2019)155

Author

The LHCb Collaboration. / Measurement of CP violation in the Bs0→ϕϕ decay and search for the B ⁰ → ϕϕ decay. In: Journal of High Energy Physics. 2019 ; Vol. 2019, No. 12.

BibTeX

@article{de93643ecb814d1ba928aa35eeaf7b3a,

title = "Measurement of CP violation in the Bs0→ϕϕ decay and search for the B 0 → ϕϕ decay",

abstract = "A measurement of the time-dependent CP-violating asymmetry in Bs0→ϕϕ decays is presented. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.0 fb−1 collected by the LHCb experiment at centre-of-mass energies s = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 Bs0→ϕϕ decays is obtained. The CP-violating phase ϕsss¯s is measured to be −0.073 ± 0.115(stat) ± 0.027(syst) rad, under the assumption it is independent of the helicity of the ϕϕ decay. In addition, the CP-violating phases of the transverse polarisations under the assumption of CP conservation of the longitudinal phase are measured. The helicity-independent direct CP-violation parameter is also measured, and is found to be |λ| = 0.99 ± 0.05(stat) ± 0.01(syst). In addition, T-odd triple-product asymmetries are measured. The results obtained are consistent with the hypothesis of CP conservation in b¯ → s¯ ss¯ s transitions. Finally, a limit on the branching fraction of the B0 → ϕϕ decay is determined to be B(B→ ϕϕ) < 2.7 × 10 − 8 at 90 % confidence level.",

keywords = "Hadron-Hadron scattering (experiments), UNITARY SYMMETRY, TOOL",

author = "{The LHCb Collaboration} and R. Aaij and {Abell{\'a}n Beteta}, C. and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and F. Archilli and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and A. Bondar and S. Eidelman and P. Krokovny and V. Kudryavtsev and T. Maltsev and L. Shekhtman and V. Vorobyev",

year = "2019",

month = dec,

day = "1",

doi = "10.1007/JHEP12(2019)155",

language = "English",

volume = "2019",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer US",

number = "12",

}

RIS

TY - JOUR

T1 - Measurement of CP violation in the Bs0→ϕϕ decay and search for the B 0 → ϕϕ decay

AU - The LHCb Collaboration

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Archilli, F.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Bondar, A.

AU - Eidelman, S.

AU - Krokovny, P.

AU - Kudryavtsev, V.

AU - Maltsev, T.

AU - Shekhtman, L.

AU - Vorobyev, V.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - A measurement of the time-dependent CP-violating asymmetry in Bs0→ϕϕ decays is presented. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.0 fb−1 collected by the LHCb experiment at centre-of-mass energies s = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 Bs0→ϕϕ decays is obtained. The CP-violating phase ϕsss¯s is measured to be −0.073 ± 0.115(stat) ± 0.027(syst) rad, under the assumption it is independent of the helicity of the ϕϕ decay. In addition, the CP-violating phases of the transverse polarisations under the assumption of CP conservation of the longitudinal phase are measured. The helicity-independent direct CP-violation parameter is also measured, and is found to be |λ| = 0.99 ± 0.05(stat) ± 0.01(syst). In addition, T-odd triple-product asymmetries are measured. The results obtained are consistent with the hypothesis of CP conservation in b¯ → s¯ ss¯ s transitions. Finally, a limit on the branching fraction of the B0 → ϕϕ decay is determined to be B(B→ ϕϕ) < 2.7 × 10 − 8 at 90 % confidence level.

AB - A measurement of the time-dependent CP-violating asymmetry in Bs0→ϕϕ decays is presented. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.0 fb−1 collected by the LHCb experiment at centre-of-mass energies s = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 Bs0→ϕϕ decays is obtained. The CP-violating phase ϕsss¯s is measured to be −0.073 ± 0.115(stat) ± 0.027(syst) rad, under the assumption it is independent of the helicity of the ϕϕ decay. In addition, the CP-violating phases of the transverse polarisations under the assumption of CP conservation of the longitudinal phase are measured. The helicity-independent direct CP-violation parameter is also measured, and is found to be |λ| = 0.99 ± 0.05(stat) ± 0.01(syst). In addition, T-odd triple-product asymmetries are measured. The results obtained are consistent with the hypothesis of CP conservation in b¯ → s¯ ss¯ s transitions. Finally, a limit on the branching fraction of the B0 → ϕϕ decay is determined to be B(B→ ϕϕ) < 2.7 × 10 − 8 at 90 % confidence level.

KW - Hadron-Hadron scattering (experiments)

KW - UNITARY SYMMETRY

KW - TOOL

UR - http://www.scopus.com/inward/record.url?scp=85077196849&partnerID=8YFLogxK

U2 - 10.1007/JHEP12(2019)155

DO - 10.1007/JHEP12(2019)155

M3 - Article

AN - SCOPUS:85077196849

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 12

M1 - 155

ER -

ID: 22981699