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Pregled bibliografske jedinice broj: 1060093

Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at root s(NN)=5.02 TeV

(CMS Collaboration) Sirunyan, Albert M.; ...; Antunović, Željko; Brigljević, Vuko; Ferenček, Dinko; Godinović, Nikola; Kadija, Krešo; Kovač, Marko; Lelas, Damir; Luetić, Jelena et al.
Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at root s(NN)=5.02 TeV // Physics letters. B, 797 (2019), 134826, 41 doi:10.1016/j.physletb.2019.134826 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 1060093 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at root s(NN)=5.02 TeV

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

Kolaboracija
CMS Collaboration

Izvornik
Physics letters. B (0370-2693) 797 (2019); 134826, 41

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

Ključne riječi
high energy physics ; experimental particle physics ; LHC ; CMS ; physics ; beyond two generations ; excited top quark ; hadron-hadron scattering (experiments) ; supersymmetry ; beyond standard model ; lepton production ; data acquisition concepts ; detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases) ; modular electronics ; optical detector readout concepts ; particle physics experiments ; data ; Higgs ; muon

Sažetak
Evidence for the light-by-light scattering process, gamma gamma -> gamma gamma, in ultraperipheral PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is reported. The analysis is conducted using a data sample corresponding to an integrated luminosity of 390 mu b(-1) recorded by the CMS experiment at the LHC. Light-by-light scattering processes are selected in events with two photons exclusively produced, each with transverse energy E-T(gamma) > 2 GeV, pseudorapidity vertical bar eta(gamma)vertical bar < 2.4, diphoton invariant mass m(gamma gamma) > 5 GeV, diphoton transverse momentum p(T)(gamma gamma) < 1 GeV, and diphoton acoplanarity below 0.01. After all selection criteria are applied, 14 events are observed, compared to expectations of 9.0 +/- 0.9 (theo) events for the signal and 4.0 +/- 1.2 (stat) for the background processes. The excess observed in data relative to the background-only expectation corresponds to a significance of 3.7 standard deviations, and has properties consistent with those expected for the light-by-light scattering signal. The measured fiducial light-by-light scattering cross section, sigma(fid)(gamma gamma -> gamma gamma) = 120 +/- 46(stat) +/- 28(syst) +/- 12(theo) nb, is consistent with the standard model prediction. The m(gamma gamma) distribution is used to set new exclusion limits on the production of pseudoscalar axion-like particles, via the gamma gamma -> a -> gamma gamma process, in the mass range m(a) = 5-90 GeV.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA

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

Profili:

Avatar Url Senka Đurić (autor)

Avatar Url Marko Kovač (autor)

Avatar Url Damir Lelas (autor)

Avatar Url Ivica Puljak (autor)

Avatar Url Krešo Kadija (autor)

Avatar Url Toni Šćulac (autor)

Avatar Url Tatjana Šuša (autor)

Avatar Url Vuko Brigljević (autor)

Avatar Url Nikola Godinović (autor)

Avatar Url Benjamin Mesić (autor)

Avatar Url Jelena Luetić (autor)

Avatar Url Dinko Ferenček (autor)

Avatar Url Željko Antunović (autor)

Poveznice na cjeloviti tekst rada:

Pristup cjelovitom tekstu rada doi www.sciencedirect.com doi.org arxiv.org fulir.irb.hr

Citiraj ovu publikaciju:

(CMS Collaboration) Sirunyan, Albert M.; ...; Antunović, Željko; Brigljević, Vuko; Ferenček, Dinko; Godinović, Nikola; Kadija, Krešo; Kovač, Marko; Lelas, Damir; Luetić, Jelena et al.
Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at root s(NN)=5.02 TeV // Physics letters. B, 797 (2019), 134826, 41 doi:10.1016/j.physletb.2019.134826 (međunarodna recenzija, članak, znanstveni)
(CMS Collaboration) (CMS Collaboration) Sirunyan, A., ..., Antunović, Ž., Brigljević, V., Ferenček, D., Godinović, N., Kadija, K., Kovač, M., Lelas, D. & Luetić, J. (2019) Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at root s(NN)=5.02 TeV. Physics letters. B, 797, 134826, 41 doi:10.1016/j.physletb.2019.134826.
@article{article, author = {Sirunyan, Albert M. and Antunovi\'{c}, \v{Z}eljko and Brigljevi\'{c}, Vuko and Feren\v{c}ek, Dinko and Godinovi\'{c}, Nikola and Kadija, Kre\v{s}o and Kova\v{c}, Marko and Lelas, Damir and Lueti\'{c}, Jelena and Majumder, Devdatta and Mesi\'{c}, Benjamin and Puljak, Ivica and Starodumov, Andrey and \DJuri\'{c}, Senka and \v{S}u\v{s}a, Tatjana and \v{S}\'{c}ulac, Toni and Woods, Nathaniel}, year = {2019}, pages = {41}, DOI = {10.1016/j.physletb.2019.134826}, chapter = {134826}, keywords = {high energy physics, experimental particle physics, LHC, CMS, physics, beyond two generations, excited top quark, hadron-hadron scattering (experiments), supersymmetry, beyond standard model, lepton production, data acquisition concepts, detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases), modular electronics, optical detector readout concepts, particle physics experiments, data, Higgs, muon}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2019.134826}, volume = {797}, issn = {0370-2693}, title = {Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at root s(NN)=5.02 TeV}, keyword = {high energy physics, experimental particle physics, LHC, CMS, physics, beyond two generations, excited top quark, hadron-hadron scattering (experiments), supersymmetry, beyond standard model, lepton production, data acquisition concepts, detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases), modular electronics, optical detector readout concepts, particle physics experiments, data, Higgs, muon}, chapternumber = {134826} }
@article{article, author = {Sirunyan, Albert M. and Antunovi\'{c}, \v{Z}eljko and Brigljevi\'{c}, Vuko and Feren\v{c}ek, Dinko and Godinovi\'{c}, Nikola and Kadija, Kre\v{s}o and Kova\v{c}, Marko and Lelas, Damir and Lueti\'{c}, Jelena and Majumder, Devdatta and Mesi\'{c}, Benjamin and Puljak, Ivica and Starodumov, Andrey and \DJuri\'{c}, Senka and \v{S}u\v{s}a, Tatjana and \v{S}\'{c}ulac, Toni and Woods, Nathaniel}, year = {2019}, pages = {41}, DOI = {10.1016/j.physletb.2019.134826}, chapter = {134826}, keywords = {high energy physics, experimental particle physics, LHC, CMS, physics, beyond two generations, excited top quark, hadron-hadron scattering (experiments), supersymmetry, beyond standard model, lepton production, data acquisition concepts, detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases), modular electronics, optical detector readout concepts, particle physics experiments, data, Higgs, muon}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2019.134826}, volume = {797}, issn = {0370-2693}, title = {Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at root s(NN)=5.02 TeV}, keyword = {high energy physics, experimental particle physics, LHC, CMS, physics, beyond two generations, excited top quark, hadron-hadron scattering (experiments), supersymmetry, beyond standard model, lepton production, data acquisition concepts, detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases), modular electronics, optical detector readout concepts, particle physics experiments, data, Higgs, muon}, chapternumber = {134826} }

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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