Measurements of $${\mathrm{p}} {\mathrm{p}} \rightarrow {\mathrm{Z}} {\mathrm{Z}} $$ production cross sections and constraints on anomalous triple gauge couplings at $$\sqrt{s} = 13\,\text {TeV} $$
Yazarlar (8)
Dr. Öğr. Üyesi Sevgi TEKTEN AKTAŞ Kafkas Üniversitesi, Türkiye
Prof. Dr. Mithat Kaya Marmara Üniversitesi, Türkiye
Prof. Dr. Erhan Gülmez Boğaziçi Üniversitesi, Türkiye
Prof. Dr. Salim Çerçi Adıyaman Üniversitesi, Türkiye
Prof. Dr. Elif Aslı Yetkin İstanbul Bilgi Üniversitesi, Türkiye
Prof. Dr. Deniz Sunar Çerçi Adıyaman Üniversitesi, Türkiye
Prof. Dr. Sertaç Öztürk İstinye Üniversitesi, Türkiye
Doç. Dr. Özlem Kaya Milli Savunma Üniversitesi, Türkiye
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Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | The European Physical Journal C (Q1) | ||
| Dergi ISSN | 1434-6044 Dergi Bilgileri (2021) | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | Türkçe | Basım Tarihi | 01-2021 |
| Kabul Tarihi | 29-12-2020 | Yayınlanma Tarihi | 01-03-2021 |
| Cilt / Sayı / Sayfa | 81 / 0 / – | DOI | 10.1140/epjc/s10052-020-08817-8 |
| Makale Linki | http://dx.doi.org/10.1140/epjc/s10052-020-08817-8 | ||
| UAK Araştırma Alanları |
Fizik
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| Özet |
| AbstractThe production of Z boson pairs in proton–proton ($${\mathrm{p}} {\mathrm{p}} $$ p p ) collisions, $${{\mathrm{p}} {\mathrm{p}} \rightarrow ({\mathrm{Z}}/\gamma ^*)({\mathrm{Z}}/\gamma ^*) \rightarrow 2\ell 2\ell '}$$ p p → ( Z / γ ∗ ) ( Z / γ ∗ ) → 2 ℓ 2 ℓ ′ , where $${\ell ,\ell ' = {\mathrm{e}}}$$ ℓ , ℓ ′ = e or $${{\upmu }}$$ μ , is studied at a center-of-mass energy of 13$$\,\text {TeV}$$ TeV with the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 137$$\,\text {fb}^{-1}$$ fb - 1 , collected during 2016–2018. The $${\mathrm{Z}} {\mathrm{Z}} $$ Z Z production cross section, $$\sigma _{\text {tot}} ({\mathrm{p}} {\mathrm{p}} \rightarrow {\mathrm{Z}} {\mathrm{Z}} ) = 17.4 \pm 0.3 \,\text {(stat)} \pm 0.5 \,\text {(syst)} \pm 0.4 \,\text {(theo)} \pm 0.3 \,\text {(lumi)} \text { pb} $$ σ tot ( p p → Z Z ) = 17.4 ± 0.3 (stat) ± 0.5 (syst) ± 0.4 (theo) ± 0.3 (lumi) pb , measured for events with two pairs of opposite-sign, same-flavor leptons produced in the mass region $${60< m_{\ell ^+\ell ^-} < 120\,\text {GeV}}$$ 60 < m ℓ + ℓ - < 120 GeV is consistent with standard model predictions. Differential cross sections are also measured and agree with theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous $${\mathrm{Z}} {\mathrm{Z}} {\mathrm{Z}} $$ Z Z Z and $${{\mathrm{Z}} {\mathrm{Z}} \gamma }$$ Z Z γ couplings. |
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