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Pregled bibliografske jedinice broj: 1010590

Measurement of b hadron lifetimes in pp collisions at s√=8


(CMS Collaboration) Sirunyan, Albert; ...; Đurić, Senka; Lelas, Damir; Godinović, Nikola; Puljak, Ivica; Šćulac, Toni; Mesić, Benjamin; Šuša, Tatjana; Kovač, Marko et al.
Measurement of b hadron lifetimes in pp collisions at s√=8 // European physical journal C : particles and fields, 78 (2018), 457, 28 doi:10.1140/epjc/s10052-018-5929-3 (međunarodna recenzija, članak, znanstveni)


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Naslov
Measurement of b hadron lifetimes in pp collisions at s√=8

Autori
Sirunyan, Albert ; ... ; Đurić, Senka ; Lelas, Damir ; Godinović, Nikola ; Puljak, Ivica ; Šćulac, Toni ; Mesić, Benjamin ; Šuša, Tatjana ; Kovač, Marko ; Ferenček, Dinko ; Antunović, Željko ; Starodumov, Andrey ; Brigljević, Vuko ; Luetić, Jelena ; Kadija, Krešo ; ... ; Woods, Nate

Kolaboracija
CMS Collaboration

Izvornik
European physical journal C : particles and fields (1434-6044) 78 (2018); 457, 28

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
high energy physics ; experimental particle physics ; LHC ; CMS ; standard model

Sažetak
Measurements are presented of the lifetimes of the B0, B0s, Λ0b, and B+c hadrons using the decay channels B0→J/ψK∗(892)0, B0→J/ψK0S, B0s→J/ψπ+π−, B0s→J/ψϕ(1020), Λ0b→J/ψΛ0, and B+c→J/ψπ+. The data sample, corresponding to an integrated luminosity of 19.7fb-1, was collected by the CMS detector at the LHC in proton–proton collisions at s√=8TeV. The B0 lifetime is measured to be 453.0±1.6(stat)±1.8(syst)μm in J/ψK∗(892)0and 457.8±2.7(stat)±2.8(syst)μm in J/ψK0S, which results in a combined measurement of cτB0=454.1±1.4(stat)±1.7(syst)μm. The effective lifetime of the B0s meson is measured in two decay modes, with contributions from different amounts of the heavy and light eigenstates. This results in two different measured lifetimes: cτB0s→J/ψπ+π−=502.7±10.2(stat)±3.4(syst)μm and cτB0s→J/ψϕ(1020)=443.9±2.0(stat)±1.5(syst)μm. The Λ0b lifetime is found to be 442.9±8.2(stat)±2.8(syst)μm. The precision from each of these channels is as good as or better than previous measurements. The B+c lifetime, measured with respect to the B+ to reduce the systematic uncertainty, is 162.3±7.8(stat)±4.2(syst)±0.1(τB+)μm. All results are in agreement with current world-average values.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Split

Citiraj ovu publikaciju

(CMS Collaboration) Sirunyan, Albert; ...; Đurić, Senka; Lelas, Damir; Godinović, Nikola; Puljak, Ivica; Šćulac, Toni; Mesić, Benjamin; Šuša, Tatjana; Kovač, Marko et al.
Measurement of b hadron lifetimes in pp collisions at s√=8 // European physical journal C : particles and fields, 78 (2018), 457, 28 doi:10.1140/epjc/s10052-018-5929-3 (međunarodna recenzija, članak, znanstveni)
(CMS Collaboration) (CMS Collaboration) Sirunyan, A., ..., Đurić, S., Lelas, D., Godinović, N., Puljak, I., Šćulac, T., Mesić, B., Šuša, T. & Kovač, M. (2018) Measurement of b hadron lifetimes in pp collisions at s√=8. European physical journal C : particles and fields, 78, 457, 28 doi:10.1140/epjc/s10052-018-5929-3.
@article{article, year = {2018}, pages = {28}, DOI = {10.1140/epjc/s10052-018-5929-3}, chapter = {457}, keywords = {high energy physics, experimental particle physics, LHC, CMS, standard model}, journal = {European physical journal C : particles and fields}, doi = {10.1140/epjc/s10052-018-5929-3}, volume = {78}, issn = {1434-6044}, title = {Measurement of b hadron lifetimes in pp collisions at s√=8}, keyword = {high energy physics, experimental particle physics, LHC, CMS, standard model}, chapternumber = {457} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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