Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

doi:10.1007/JHEP09(2023)199

Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

Ben-Gurion University of the Negev, Technion - Israel Institute of Technology, Tel Aviv University

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

Abstract

This paper reports the first ATLAS measurement of the B_s⁰→ μμ effective lifetime. The measurement is based on the data collected in 2015–2016, amounting to 26.3 fb⁻¹ of 13 TeV LHC proton-proton collisions. The proper decay-time distribution of 58 ± 13 background-subtracted signal candidates is fit with simulated signal templates parameterised as a function of the B_s⁰ effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the B_s⁰→ μμ lifetime is 0.99_−0.07^+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model.

Original language	American English
Article number	199
Journal	Journal of High Energy Physics
Volume	2023
Issue number	9
DOIs	https://doi.org/10.1007/JHEP09(2023)199
State	Published - 1 Sep 2023

Keywords

B Physics
Hadron-Hadron Scattering

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1007/JHEP09(2023)199

Cite this

@article{2b264098726241d0abd092c8003762f5,

title = "Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector",

abstract = "This paper reports the first ATLAS measurement of the Bs0→ μμ effective lifetime. The measurement is based on the data collected in 2015–2016, amounting to 26.3 fb−1 of 13 TeV LHC proton-proton collisions. The proper decay-time distribution of 58 ± 13 background-subtracted signal candidates is fit with simulated signal templates parameterised as a function of the Bs0 effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the Bs0→ μμ lifetime is 0.99−0.07+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model.",

keywords = "B Physics, Hadron-Hadron Scattering",

author = "G. Aad and B. Abbott and K. Abeling and Abicht, \{N. J.\} and Abidi, \{S. H.\} and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and \{Adam Bourdarios\}, C. and L. Adamczyk and Addepalli, \{S. V.\} and Addison, \{M. J.\} and J. Adelman and A. Adiguzel and T. Adye and Affolder, \{A. A.\} and Y. Afik and Agaras, \{M. N.\} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and A. Ahmad and F. Ahmadov and Ahmed, \{W. S.\} and S. Ahuja and X. Ai and G. Aielli and A. Aikot and \{Ait Tamlihat\}, M. and B. Aitbenchikh and I. Aizenberg and M. Akbiyik and {\AA}kesson, \{T. P.A.\} and Akimov, \{A. V.\} and D. Akiyama and Akolkar, \{N. N.\} and \{Al Khoury\}, K. and Alberghi, \{G. L.\} and J. Albert and P. Albicocco and Albouy, \{G. L.\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and T. Alexopoulos and F. Alfonsi and Citron, \{Z. H.\} and S. Istin and E. Kajomovitz and L. Moleri and Y. Rozen and S. Tarem and C. Appelt and L. Barak and U. Barron and G. Bella and Y. Benhammou and Biswal, \{J. P.\} and B. Chen and H. Cohen and E. Etzion and Frid, \{Y. Y.\} and G. Koren and O. Kuprash and Lutz, \{M. S.\} and R. Nayak and G. Ninio and \{Pascual Dominguez\}, L. and D. Reikher and \{Salvador Salas\}, A. and A. Soffer and Tamir, \{N. M.\} and D. Vannicola",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2023.",

year = "2023",

month = sep,

day = "1",

doi = "10.1007/JHEP09(2023)199",

language = "American English",

volume = "2023",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "9",

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TY - JOUR

T1 - Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

AU - Aad, G.

AU - Abbott, B.

AU - Abeling, K.

AU - Abicht, N. J.

AU - Abidi, S. H.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adam Bourdarios, C.

AU - Adamczyk, L.

AU - Addepalli, S. V.

AU - Addison, M. J.

AU - Adelman, J.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agaras, M. N.

AU - Agarwala, J.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ahuja, S.

AU - Ai, X.

AU - Aielli, G.

AU - Aikot, A.

AU - Ait Tamlihat, M.

AU - Aitbenchikh, B.

AU - Aizenberg, I.

AU - Akbiyik, M.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Akiyama, D.

AU - Akolkar, N. N.

AU - Al Khoury, K.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

AU - Albouy, G. L.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexopoulos, T.

AU - Alfonsi, F.

AU - Citron, Z. H.

AU - Istin, S.

AU - Kajomovitz, E.

AU - Moleri, L.

AU - Rozen, Y.

AU - Tarem, S.

AU - Appelt, C.

AU - Barak, L.

AU - Barron, U.

AU - Bella, G.

AU - Benhammou, Y.

AU - Biswal, J. P.

AU - Chen, B.

AU - Cohen, H.

AU - Etzion, E.

AU - Frid, Y. Y.

AU - Koren, G.

AU - Kuprash, O.

AU - Lutz, M. S.

AU - Nayak, R.

AU - Ninio, G.

AU - Pascual Dominguez, L.

AU - Reikher, D.

AU - Salvador Salas, A.

AU - Soffer, A.

AU - Tamir, N. M.

AU - Vannicola, D.

PY - 2023/9/1

Y1 - 2023/9/1

N2 - This paper reports the first ATLAS measurement of the Bs0→ μμ effective lifetime. The measurement is based on the data collected in 2015–2016, amounting to 26.3 fb−1 of 13 TeV LHC proton-proton collisions. The proper decay-time distribution of 58 ± 13 background-subtracted signal candidates is fit with simulated signal templates parameterised as a function of the Bs0 effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the Bs0→ μμ lifetime is 0.99−0.07+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model.

AB - This paper reports the first ATLAS measurement of the Bs0→ μμ effective lifetime. The measurement is based on the data collected in 2015–2016, amounting to 26.3 fb−1 of 13 TeV LHC proton-proton collisions. The proper decay-time distribution of 58 ± 13 background-subtracted signal candidates is fit with simulated signal templates parameterised as a function of the Bs0 effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the Bs0→ μμ lifetime is 0.99−0.07+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model.

KW - B Physics

KW - Hadron-Hadron Scattering

UR - http://www.scopus.com/inward/record.url?scp=85196292164&partnerID=8YFLogxK

U2 - 10.1007/JHEP09(2023)199

DO - 10.1007/JHEP09(2023)199

M3 - Article

SN - 1126-6708

VL - 2023

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 9

M1 - 199

ER -

Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

Abstract

Keywords

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