Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at 5.02 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1) | ||
| Dergi ISSN | 0370-2693 Dergi Bilgileri (2019) | ||
| Dergi Tarandığı Indeksler | SCI | ||
| Makale Dili | İngilizce | Basım Tarihi | 10-2019 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 01-10-2019 |
| Cilt / Sayı / Sayfa | 797 / 1 / 134826–0 | DOI | 10.1016/j.physletb.2019.134826 |
| Makale Linki | https://linkinghub.elsevier.com/retrieve/pii/S0370269319305404 | ||
| UAK Araştırma Alanları |
Nükleer Fizik
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| Özet |
| Evidence for the light-by-light scattering process, γ γ→ γ γ, 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 μ 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 γ> 2 GeV, pseudorapidity| η γ|< 2.4, diphoton invariant mass m γ γ> 5 GeV, diphoton transverse momentum p T γ γ< 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 … |
| Anahtar Kelimeler |
| CMS | Light-by-light | PbPb | Photoproduction | UPC |
Science Direct
Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at 5.02 TeV
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Scopus | 245 |
| Google Scholar | 3 |
| Google Scholar | 583 |