Measurement of the relative width difference of the B0‐ B¯ 0 system with the ATLAS detector

The ATLAS collaboration

doi:10.1007/JHEP06(2016)081

Measurement of the relative width difference of the B⁰‐ B¯ ⁰ system with the ATLAS detector

The ATLAS collaboration

Physics

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

Abstract

Abstract: This paper presents the measurement of the relative width difference ΔΓ_d/Γ_d of the B⁰‐ B¯ ⁰ system using the data collected by the ATLAS experiment at the LHC in pp collisions at s=7 TeV and s=8 TeV and corresponding to an integrated luminosity of 25.2 fb⁻¹. The value of ΔΓ_d/Γ_d is obtained by comparing the decay-time distributions of B⁰ → J/ψK_S and B⁰ → J/ψK^*0(892) decays. The result is ΔΓ_d/Γ_d = (−0.1±1.1 (stat.)± 0.9 (syst.)) × 10⁻². Currently, this is the most precise single measurement of ΔΓ_d/Γ_d. It agrees with the Standard Model prediction and the measurements by other experiments.[Figure not available: see fulltext.]

Original language	English (US)
Article number	81
Journal	Journal of High Energy Physics
Volume	2016
Issue number	6
DOIs	https://doi.org/10.1007/JHEP06(2016)081
State	Published - Jun 1 2016

Keywords

B physics
Hadron-Hadron scattering (experiments)

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP06(2016)081

Cite this

@article{fbfe6bf9d9a943a880a5600f771a20a1,

title = "Measurement of the relative width difference of the B0‐ B¯ 0 system with the ATLAS detector",

abstract = "Abstract: This paper presents the measurement of the relative width difference ΔΓd/Γd of the B0‐ B¯ 0 system using the data collected by the ATLAS experiment at the LHC in pp collisions at s=7 TeV and s=8 TeV and corresponding to an integrated luminosity of 25.2 fb−1. The value of ΔΓd/Γd is obtained by comparing the decay-time distributions of B0 → J/ψKS and B0 → J/ψK*0(892) decays. The result is ΔΓd/Γd = (−0.1±1.1 (stat.)± 0.9 (syst.)) × 10−2. Currently, this is the most precise single measurement of ΔΓd/Γd. It agrees with the Standard Model prediction and the measurements by other experiments.[Figure not available: see fulltext.]",

keywords = "B physics, Hadron-Hadron scattering (experiments)",

author = "\{The ATLAS collaboration\} and M. Aaboud and G. Aad and B. Abbott and J. Abdallah and O. Abdinov and B. Abeloos and R. Aben and AbouZeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and J. Adelman and S. Adomeit and T. Adye and Affolder, \{A. A.\} and T. Agatonovic-Jovin and J. Agricola and Aguilar-Saavedra, \{J. A.\} and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} and Akimov, \{A. V.\} and Alberghi, \{G. L.\} 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 T. Alexopoulos and M. Alhroob and M. Aliev and G. Alimonti and J. Alison and Alkire, \{S. P.\} and Allbrooke, \{B. M.M.\} and Allen, \{B. W.\} and K. Cranmer and A. Haas and M. Losada and Mincer, \{A. I.\} and P. Nemethy",

note = "Publisher Copyright: {\textcopyright} 2016, The Author(s).",

year = "2016",

month = jun,

day = "1",

doi = "10.1007/JHEP06(2016)081",

language = "English (US)",

volume = "2016",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "6",

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TY - JOUR

T1 - Measurement of the relative width difference of the B0‐ B¯ 0 system with the ATLAS detector

AU - The ATLAS collaboration

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O.

AU - Abeloos, B.

AU - Aben, R.

AU - AbouZeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Agatonovic-Jovin, T.

AU - Agricola, J.

AU - Aguilar-Saavedra, J. A.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Alberghi, G. L.

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 - Alexopoulos, T.

AU - Alhroob, M.

AU - Aliev, M.

AU - Alimonti, G.

AU - Alison, J.

AU - Alkire, S. P.

AU - Allbrooke, B. M.M.

AU - Allen, B. W.

AU - Cranmer, K.

AU - Haas, A.

AU - Losada, M.

AU - Mincer, A. I.

AU - Nemethy, P.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Abstract: This paper presents the measurement of the relative width difference ΔΓd/Γd of the B0‐ B¯ 0 system using the data collected by the ATLAS experiment at the LHC in pp collisions at s=7 TeV and s=8 TeV and corresponding to an integrated luminosity of 25.2 fb−1. The value of ΔΓd/Γd is obtained by comparing the decay-time distributions of B0 → J/ψKS and B0 → J/ψK*0(892) decays. The result is ΔΓd/Γd = (−0.1±1.1 (stat.)± 0.9 (syst.)) × 10−2. Currently, this is the most precise single measurement of ΔΓd/Γd. It agrees with the Standard Model prediction and the measurements by other experiments.[Figure not available: see fulltext.]

AB - Abstract: This paper presents the measurement of the relative width difference ΔΓd/Γd of the B0‐ B¯ 0 system using the data collected by the ATLAS experiment at the LHC in pp collisions at s=7 TeV and s=8 TeV and corresponding to an integrated luminosity of 25.2 fb−1. The value of ΔΓd/Γd is obtained by comparing the decay-time distributions of B0 → J/ψKS and B0 → J/ψK*0(892) decays. The result is ΔΓd/Γd = (−0.1±1.1 (stat.)± 0.9 (syst.)) × 10−2. Currently, this is the most precise single measurement of ΔΓd/Γd. It agrees with the Standard Model prediction and the measurements by other experiments.[Figure not available: see fulltext.]

KW - B physics

KW - Hadron-Hadron scattering (experiments)

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UR - http://www.scopus.com/inward/citedby.url?scp=84978387429&partnerID=8YFLogxK

U2 - 10.1007/JHEP06(2016)081

DO - 10.1007/JHEP06(2016)081

M3 - Article

AN - SCOPUS:84978387429

SN - 1126-6708

VL - 2016

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 6

M1 - 81

ER -