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Measurement of the CP-violating phase ϕsand the Bs0meson decay width difference with Bs0→ J/ψϕ decays in ATLAS

Publication ,  Journal Article
The ATLAS collaboration, ; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Aben, R; Abolins, M; AbouZeid, OS; Abramowicz, H; Abreu, H; Abreu, R ...
Published in: Journal of High Energy Physics
August 1, 2016
Published version (DOI)

A measurement of the Bs0decay parameters in the Bs0→ J/ψϕ channel using an integrated luminosity of 14.3 fb−1collected by the ATLAS detector from 8 TeV pp collisions at the LHC is presented. The measured parameters include the CP -violating phase ϕs, the decay width Γs and the width difference between the mass eigenstates ΔΓs. The values measured for the physical parameters are statistically combined with those from 4.9 fb−1of 7 TeV data, leading to the following: Φs = -0.090 ± 0.078 (stat.) ± (syst.) rad Δ Γs = 0.085 ± 0.011 (stat.) ± 0.007 (syst.) Ps-1 Δ Γs = 0.675 ± 0.003 (stat.) ± 0.03 (syst.) Ps-1 In the analysis the parameter ΔΓs is constrained to be positive. Results for ϕs and ΔΓs are also presented as 68% and 95% likelihood contours in the ϕs-ΔΓs plane. Also measured in this decay channel are the transversity amplitudes and corresponding strong phases. All measurements are in agreement with the Standard Model predictions.[Figure not available: see fulltext.]

Duke Scholars

Ayana T. Arce
Author Ayana T. Arce Physics
Alfred T. Goshaw
Author Alfred T. Goshaw Physics
Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Mark C. Kruse
Author Mark C. Kruse Physics
Seog Oh
Author Seog Oh Physics
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Published In

Journal of High Energy Physics

DOI

10.1007/JHEP08(2016)147

EISSN

1029-8479

ISSN

1126-6708

Publication Date

August 1, 2016

Volume

2016

Issue

8

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics
 

Citation

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MLA
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The ATLAS collaboration, ., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., … Arslan, O. (2016). Measurement of the CP-violating phase ϕsand the Bs0meson decay width difference with Bs0→ J/ψϕ decays in ATLAS. Journal of High Energy Physics, 2016(8). https://doi.org/10.1007/JHEP08(2016)147
The ATLAS collaboration, L., G. Aad, B. Abbott, J. Abdallah, O. Abdinov, R. Aben, M. Abolins, et al. “Measurement of the CP-violating phase ϕsand the Bs0meson decay width difference with Bs0→ J/ψϕ decays in ATLAS.” Journal of High Energy Physics 2016, no. 8 (August 1, 2016). https://doi.org/10.1007/JHEP08(2016)147.
The ATLAS collaboration, Aad G, Abbott B, Abdallah J, Abdinov O, Aben R, et al. Measurement of the CP-violating phase ϕsand the Bs0meson decay width difference with Bs0→ J/ψϕ decays in ATLAS. Journal of High Energy Physics. 2016 Aug 1;2016(8).
The ATLAS collaboration, L., et al. “Measurement of the CP-violating phase ϕsand the Bs0meson decay width difference with Bs0→ J/ψϕ decays in ATLAS.” Journal of High Energy Physics, vol. 2016, no. 8, Aug. 2016. Scopus, doi:10.1007/JHEP08(2016)147.
The ATLAS collaboration, Aad G, Abbott B, Abdallah J, Abdinov O, Aben R, Abolins M, AbouZeid OS, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adamczyk L, Adams DL, Adelman J, Adomeit S, Adye T, Affolder AA, Agatonovic-Jovin T, Agricola J, Aguilar-Saavedra JA, Ahlen SP, Ahmadov F, Aielli G, Akerstedt H, Åkesson TPA, Akimov AV, Alberghi GL, Albert J, Albrand S, Alconada Verzini MJ, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexopoulos T, Alhroob M, Alimonti G, Alio L, Alison J, Alkire SP, Allbrooke BMM, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Altheimer A, Alvarez Gonzalez B, Álvarez Piqueras D, Alviggi MG, Amadio BT, Amako K, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amorim A, Amoroso S, Amram N, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anders JK, Anderson KJ, Andreazza A, Andrei V, Angelidakis S, Angelozzi I, Anger P, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Arce ATH, Arduh FA, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ, Arnaez O, Arnal V, Arnold H, Arratia M, Arslan O. Measurement of the CP-violating phase ϕsand the Bs0meson decay width difference with Bs0→ J/ψϕ decays in ATLAS. Journal of High Energy Physics. 2016 Aug 1;2016(8).
Journal cover image

Published In

Journal of High Energy Physics

DOI

10.1007/JHEP08(2016)147

EISSN

1029-8479

ISSN

1126-6708

Publication Date

August 1, 2016

Volume

2016

Issue

8

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics