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Pregled bibliografske jedinice broj: 673817

Study of W boson production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV


Chatrchyan, S.; ...; Godinović, Nikola; Lelas, Damir; Pleština, Roko; Polić, Dunja; Puljak, Ivica; Antunović, Željko; Kovač, Marko; Brigljević, Vuko et al.
Study of W boson production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV // Physics letters. B, 715 (2012), 1/3; 66-87 doi:10.1016/j.physletb.2012.07.025 (međunarodna recenzija, članak, znanstveni)


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Naslov
Study of W boson production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV

Autori
Chatrchyan, S. ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Đurić, Senka ; Kadija, Krešo ; Luetić, Jelena ; Morović, Srećko ; ... ; Mekterović, Darko ; ... ; Swanson, J.

Izvornik
Physics letters. B (0370-2693) 715 (2012), 1/3; 66-87

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

Ključne riječi
CMS; physics; heavy-ions; W bosons

Sažetak
A measurement is presented of W-boson production in PbPb collisions carried out at a nucleon-nucleon (NN) centre-of-mass energy sqrt(s[NN]) of 2.76 TeV at the LHC using the CMS detector. In data corresponding to an integrated luminosity of 7.3 inverse microbarns, the number of W to mu mu-neutrino decays is extracted in the region of muon pseudorapidity abs(eta[mu])<2.1 and transverse momentum pt[mu]>25 GeV. Yields of muons found per unit of pseudorapidity correspond to (159 +/- 10 (stat.) +/- 12 (syst.)) 10E-8 W(plus) and (154 +/- 10 (stat.) +/- 12 (syst.)) 10E-8 W(minus) bosons per minimum-bias PbPb collision. The dependence of W production on the centrality of PbPb collisions is consistent with a scaling of the yield by the number of incoherent NN collisions. The yield of W bosons is also studied in a sample of pp interactions at sqrt(s)= 2.76 TeV corresponding to an integrated luminosity of 231 inverse nanobarns. The individual W(plus) and W(minus) yields in PbPb and pp collisions are found to agree, once the neutron and proton content in Pb nuclei is taken into account. Likewise, the difference observed in the dependence of the positive and negative muon production on pseudorapidity is consistent with next-to-leading order perturbative QCD calculations.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
023-0982887-3064 - Potraga za Higgsovim bozonom i novom fizikom detektorom CMS (Ivica Puljak, )
098-0982887-2878 - Eksperimentalna fizika na LHC energijama (Krešo Kadija, )

Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Sveučilište u Splitu

Citiraj ovu publikaciju

Chatrchyan, S.; ...; Godinović, Nikola; Lelas, Damir; Pleština, Roko; Polić, Dunja; Puljak, Ivica; Antunović, Željko; Kovač, Marko; Brigljević, Vuko et al.
Study of W boson production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV // Physics letters. B, 715 (2012), 1/3; 66-87 doi:10.1016/j.physletb.2012.07.025 (međunarodna recenzija, članak, znanstveni)
Chatrchyan, S., ..., Godinović, N., Lelas, D., Pleština, R., Polić, D., Puljak, I., Antunović, Ž., Kovač, M. & Brigljević, V. (2012) Study of W boson production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV. Physics letters. B, 715 (1/3), 66-87 doi:10.1016/j.physletb.2012.07.025.
@article{article, year = {2012}, pages = {66-87}, DOI = {10.1016/j.physletb.2012.07.025}, keywords = {CMS, physics, heavy-ions, W bosons}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2012.07.025}, volume = {715}, number = {1/3}, issn = {0370-2693}, title = {Study of W boson production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV}, keyword = {CMS, physics, heavy-ions, W bosons} }

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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