Measurement of the CP-violating phase ϕs in B$_s^0$→J/ψϕ decays in ATLAS at 13 TeV

Aad, G; Abbott, B; Abbott, DC; Abdinov, O; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, BS; Achkar, B; Adachi, S; Adam, L; Bourdarios, CA; Adamczyk, L; Adamek, L; Adelman, J; Adersberger, M; Adiguzel, A; Adorni, S; Adye, T; Affolder, AA; Afik, Y; Agapopoulou, C; Agaras, MN; Aggarwal, A; Agheorghiesei, C; Aguilar-Saavedra, JA; Ahmadov, F; Ahmed, WS; Ai, X; Aielli, G; Akatsuka, S; Åkesson, TPA; Akilli, E; Akimov, AV; Khoury, KA; Alberghi, GL; Albert, J; Verzini, MJA; Alderweireldt, S; Aleksa, M; Aleksandrov, IN; Alexa, C; Alexandre, D; Alexopoulos, T; Alfonsi, A; Alhroob, M; Ali, B; Alimonti, G; Alison, J; Alkire, SP; Allaire, C; Allbrooke, BMM; Allen, BW; Allport, PP; Aloisio, A; Alonso, A; Alonso, F; Alpigiani, C; Alshehri, AA; Estevez, MA; Piqueras, DÁ; Alviggi, MG; Coutinho, YA; Ambler, A; Ambroz, L; Amelung, C; Amidei, D; Santos, SPAD; Amoroso, S; Amrouche, CS; An, F; Anastopoulos, C; Andari, N; Andeen, T; Anders, CF; Anders, JK; Andreazza, A; Andrei, V; Anelli, CR; Angelidakis, S; Angerami, A; Anisenkov, AV; Annovi, A; Antel, C; Anthony, MT; Antonelli, M; Antrim, DJA; Anulli, F; Aoki, M; Pozo, JAA; Bella, LA; Arabidze, G; Araque, JP; Ferraz, VA

doi:10.1140/epjc/s10052-021-09011-0

Title: Measurement of the CP-violating phase ϕ_s in B$$_s^0$$→J/ψϕ decays in ATLAS at 13 TeV

Journal Article · Wed Mar 31 20:00:00 EDT 2021 · European Physical Journal. C, Particles and Fields (Online)

DOI: https://doi.org/10.1140/epjc/s10052-021-09011-0 · OSTI ID:1807493

Aad, G; Abbott, B; Abbott, DC; Abdinov, O; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, BS; Achkar, B; Adachi, S; Adam, L; Bourdarios, CA; Adamczyk, L; Adamek, L more »

A measurement of the B$$_s^0$$→J/ψϕ decay parameters using 80.5 fb^-1 of integrated luminosity collected with the ATLAS detector from 13 Te proton–proton collisions at the LHC is presented. The measured parameters include the CP-violating phase ϕ_s, the width difference Δ Γ_s between the B$$_s^0$$ meson mass eigenstates and the average decay width Γ_s. The values measured for the physical parameters are combined with those from 19.2fb^-1 of 7 and 8 Te data, leading to the following: ϕs=-0.087±0.036(stat.)±0.021(syst.)radΔΓ_s=0.0657±0.0043(stat.)±0.0037(syst.)ps^-1Γ_s=0.6703±0.0014(stat.)±0.0018(syst.)ps^-1Results for ϕ_s and Δ Γ_s are also presented as 68% confidence level contours in the ϕ_s–Δ Γ_s plane. Furthermore the transversity amplitudes and corresponding strong phases are measured. ϕ_s and Δ Γ_s measurements are in agreement with the Standard Model predictions.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Contributing Organization:: ATLAS Collaboration

Grant/Contract Number:: AC02-05CH11231; AC02-76SF00515

OSTI ID:: 1807493

Journal Information:: European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 4 Vol. 81; ISSN 1434-6052

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV Collaboration, Atlas https://doi.org/10.17182/hepdata.103066 The current record is supplemented by this collection	collection	January 2021
Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1 The current record is supplemented by this collection	collection	January 2021
"Table 1" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t1 The current record is supplemented by this dataset	dataset	January 2021
"Table 2" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t2 The current record is supplemented by this dataset	dataset	January 2021
"Table 3" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t3 The current record is supplemented by this dataset	dataset	January 2021
"Table 4" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t4 The current record is supplemented by this dataset	dataset	January 2021
"Table 5" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t5 The current record is supplemented by this dataset	dataset	January 2021
"Table 6" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t6 The current record is supplemented by this dataset	dataset	January 2021
"Table 7" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t7 The current record is supplemented by this dataset	dataset	January 2021
"Table 8" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t8 The current record is supplemented by this dataset	dataset	January 2021
"Table 9" of "Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV" Collaboration, Atlas https://doi.org/10.17182/hepdata.103066.v1/t9 The current record is supplemented by this dataset	dataset	January 2021

Title: Measurement of the CP-violating phase ϕs in B$$_s^0$$→J/ψϕ decays in ATLAS at 13 TeV

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References (21)

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Title: Measurement of the CP-violating phase ϕ_s in B$$_s^0$$→J/ψϕ decays in ATLAS at 13 TeV