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Measurement of the relative width difference of the B-0-(B)over-bar(0) system with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics. Oskar Klein Ctr, Stockholm, Sweden.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics. Oskar Klein Ctr, Stockholm, Sweden.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics. Oskar Klein Ctr, Stockholm, Sweden.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 2856
2016 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 6, 081Article in journal (Refereed) Published
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Abstract [en]

This paper presents the measurement of the relative width difference Delta Gamma(d)/Gamma(d) of the B-0-(B) over bar (0) system using the data collected by the Lambda TLAS experiment at the LHC in pp collisions at root s = 7 TeV and root s= 8 TeV and corresponding to an integrated luminosity of 25.2 fb(-1). The value of Delta Gamma(d)/Gamma(d) is obtained by comparing the decay-time distributions of B-0 -> J/Psi K-S and (B) over bar (0) -> J/Psi K*(0)(892) decays. The result is Delta Gamma(d)/Gamma(d) = (-0.1 +/- 1.1 (stat.) +/- 0.9 (syst.)) x 10(-2). Currently, this is the most precise single measurement of AFd/Fd. It agrees with the Standard Model prediction and the measurements by other experiments.

Place, publisher, year, edition, pages
2016. no 6, 081
Keyword [en]
B physics, Hadron-Hadron scattering (experiments)
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-191025DOI: 10.1007/JHEP06(2016)081ISI: 000379177900001Scopus ID: 2-s2.0-84978387429OAI: oai:DiVA.org:kth-191025DiVA: diva2:954603
Funder
Swedish Research Council
Note

QC 20160823

Available from: 2016-08-23 Created: 2016-08-23 Last updated: 2016-08-23Bibliographically approved

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