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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.ORCID iD: 0000-0003-3867-0336
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics. Oskar Klein Ctr, Stockholm, Sweden.ORCID iD: 0000-0002-0299-8236
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: 28562016 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 6, article id 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, article id 081
Keywords [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, id: diva2:954603
Funder
Swedish Research Council
Note

QC 20160823

Available from: 2016-08-23 Created: 2016-08-23 Last updated: 2019-12-19Bibliographically approved

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