Flavor tagged time-dependent angular analysis of the Bs0 →J/ψφ decay and extraction of ΔΓs and the weak phase φs in ATLAS

ATLAS Collaboration

doi:10.1103/PhysRevD.90.052007

Flavor tagged time-dependent angular analysis of the Bs0 →J/ψφ decay and extraction of ΔΓs and the weak phase φs in ATLAS

ATLAS Collaboration

School of Physics and Astronomy

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

54 Scopus citations

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.

Original language	English
Article number	052007
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	90
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.90.052007
State	Published - 23 Sep 2014

Funding

Funders	Funder number
American Roentgen Ray Society
Arkansas Space Grant Consortium
Australian Respiratory Council
Austrian Science Fund
Brain Research Foundation
Bundesministerium für Bildung und Forschung
Canada Foundation for Innovation
Comisión Nacional de Investigación Científica y Tecnológica
Danmarks Grundforskningsfond
European Research Council
Fuel Cycle Technologies
Fundação de Amparo à Pesquisa do Estado de São Paulo
General Secretariat for Research and Technology
German-Israeli Foundation for Scientific Research and Development
Human Growth Foundation
India Foundation for the Arts
Israel Science Foundation
Istituto Nazionale di Fisica Nucleare
Japan Society for the Promotion of Science London
Joint Institute for Nuclear Research
Kumoh National Institute of Technology
Lundbeckfonden
Massachusetts Department of Fish and Game
Max-Planck-Gesellschaft
Ministerio de Economía y Competitividad
Ministry of Science and Technology of the People's Republic of China
Narodowe Centrum Nauki
National Natural Science Foundation of China
National Science Council Taiwan
National Stroke Foundation
Natural Sciences and Engineering Research Council of Canada
Neurosurgical Research Foundation
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Science and Technology Facilities Council	PP/E002757/1, PP/E000347/1, ST/H001069/2, ST/L001195/1, ST/J00474X/1, ST/H001042/1, ST/H001042/2, ST/M002306/1, ST/J004928/1, ST/K001361/1, GRIDPP, ST/K001310/1, ST/L006464/1, ST/L00352X/1, ST/K001337/1, ST/J501074/1, ST/L001144/1, ST/L003112/1, ST/J002798/1, ST/J005525/1, ST/K000659/1, ST/K001248/1, ST/L003325/1, ST/M000761/1, ST/I000178/1, ST/G50228X/1, ST/I505756/1, ST/H001093/2, ST/M001431/1, ST/K001418/1, ST/H001093/1, ST/K001302/1, ST/K001388/1, ST/J500641/1, PP/E000487/1, ST/F007418/1, ST/K001329/1, ST/K000713/1, ST/K50208X/1, ST/L001179/1, ST/I005803/1, ST/J004944/1, ST/K501840/1, ST/H001026/1, ST/I006080/1, ST/I000186/1, ST/G502320/1, ST/K003437/1, ST/M001733/1, PP/D002915/1, ST/M000664/1, ST/H00100X/1, ST/L000970/1, ST/K00073X/1, ST/H00100X/2, ST/K000705/1, ST/L003511/1, ST/I005811/1, PP/E003087/1, ST/J005460/1, PP/E000355/1, ST/K00140X/1, ST/M001474/1, ST/F00754X/1, ST/I00372X/1, PP/E002846/1, ST/K003658/1, ST/H00095X/2, ST/J005487/1, ST/H00095X/1, ST/I006056/1, ST/M003213/1, PP/E000444/1, ST/K00137X/1, ST/H001026/2, ST/J005576/1
Semiconductor Research Corporation
Stichting voor Fundamenteel Onderzoek der Materie
U.S. Department of Energy
U.S. Nuclear Regulatory Commission
National Science Foundation	1119200
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	149246

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10.1103/PhysRevD.90.052007

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@article{ebf964fd047e4642ad263ff5f43aee1b,

title = "Flavor tagged time-dependent angular analysis of the Bs0 →J/ψφ decay and extraction of ΔΓs and the weak phase φs in ATLAS",

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.",

author = "{ATLAS Collaboration} and G. Aad and T. Abajyan and B. Abbott and J. Abdallah and {Abdel Khalek}, S. and O. Abdinov and R. Aben and B. Abi and M. Abolins and Abouzeid, {O. S.} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, {B. S.} and L. Adamczyk and Adams, {D. L.} and Addy, {T. N.} and J. Adelman and S. Adomeit and T. Adye and T. Agatonovic-Jovin and Aguilar-Saavedra, {J. A.} and M. Agustoni and Ahlen, {S. P.} and A. Ahmad and F. Ahmadov and G. Aielli and {\AA}kesson, {T. P.A.} and G. Akimoto and Akimov, {A. V.} and J. Albert and S. Albrand and {Alconada Verzini}, {M. J.} and M. Aleksa and Aleksandrov, {I. N.} and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and G. Alimonti and A. Ashkenazi and L. Barak and G. Bella and Y. Benhammou and T. Cao and E. Etzion and Y. Oren and Y. Silver and A. Soffer",

note = "Publisher Copyright: {\textcopyright} 2014 CERN, for the ATLAS Collaboration.",

year = "2014",

month = sep,

day = "23",

doi = "10.1103/PhysRevD.90.052007",

language = "אנגלית",

volume = "90",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Flavor tagged time-dependent angular analysis of the Bs0 →J/ψφ decay and extraction of ΔΓs and the weak phase φs in ATLAS

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abajyan, T.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - Abouzeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Addy, T. N.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Agatonovic-Jovin, T.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Ashkenazi, A.

AU - Barak, L.

AU - Bella, G.

AU - Benhammou, Y.

AU - Cao, T.

AU - Etzion, E.

AU - Oren, Y.

AU - Silver, Y.

AU - Soffer, A.

PY - 2014/9/23

Y1 - 2014/9/23

N2 - 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.

AB - 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.

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SN - 1550-7998

VL - 90

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 5

M1 - 052007

ER -

Flavor tagged time-dependent angular analysis of the Bs0 →J/ψφ decay and extraction of ΔΓs and the weak phase φs in ATLAS

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