학술논문
Flavor tagged time-dependent angular analysis of the Bs0→J/ψϕ decay and extraction of ΔΓs and the weak phase ϕs in ATLAS
Document Type
article
Author
Aad, G; Abajyan, T; Abbott, B; Abdallah, J; Khalek, S Abdel; Abdinov, O; Aben, R; Abi, B; Abolins, M; AbouZeid, OS; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, BS; Adamczyk, L; Adams, DL; Addy, TN; Adelman, J; Adomeit, S; Adye, T; Agatonovic-Jovin, T; Aguilar-Saavedra, JA; Agustoni, M; Ahlen, SP; Ahmad, A; Ahmadov, F; Aielli, G; Åkesson, TPA; Akimoto, G; Akimov, AV; Albert, J; Albrand, S; Verzini, MJ Alconada; Aleksa, M; Aleksandrov, IN; Alexa, C; Alexander, G; Alexandre, G; Alexopoulos, T; Alhroob, M; Alimonti, G; Alio, L; Alison, J; Allbrooke, BMM; Allison, LJ; Allport, PP; Allwood-Spiers, SE; Almond, J; Aloisio, A; Alon, R; Alonso, A; Alonso, F; Alpigiani, C; Altheimer, A; Gonzalez, B Alvarez; Alviggi, MG; Amako, K; Coutinho, Y Amaral; Amelung, C; Amidei, D; Ammosov, VV; Dos Santos, SP Amor; Amorim, A; Amoroso, S; Amram, N; Amundsen, G; Anastopoulos, C; Ancu, LS; Andari, N; Andeen, T; Anders, CF; Anders, G; Anderson, KJ; Andreazza, A; Andrei, V; Anduaga, XS; Angelidakis, S; Anger, P; Angerami, A; Anghinolfi, F; Anisenkov, AV; Anjos, N; Annovi, A; Antonaki, A; Antonelli, M; Antonov, A; Antos, J; Anulli, F; Aoki, M; Bella, L Aperio; Apolle, R; Arabidze, G; Aracena, I; Arai, Y; Araque, JP; Arce, ATH; Arguin, J-F; Argyropoulos, S; Arik, M; Armbruster, AJ
Source
Physical Review D. 90(5)
Subject
Language
Abstract
A measurement of the Bs0→J/ψφ decay parameters, updated to include flavor tagging is reported using 4.9fb-1 of integrated luminosity collected by the ATLAS detector from s=7TeV pp collisions recorded in 2011 at the LHC. The values measured for the physical parameters are φs=0.12±0.25(stat)±0.05(syst)radΔΓs=0.053±0.021(stat)±0.010(syst)ps-1Γs=0.677±0.007(stat)±0.004(syst)ps-1|A (0)|2=0.220±0.008(stat)±0.009(syst)|A0(0)|2=0.529±0.006(stat)±0.012(syst)δ=3.89±0.47(stat)±0.11(syst)radwhere the parameter ΔΓs is constrained to be positive. The S-wave contribution was measured and found to be compatible with zero. Results for φs and ΔΓs are also presented as 68% and 95% likelihood contours, which show agreement with the Standard Model expectations.