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| 題名: | Measurement of the pp→ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at s=8 TeV |
| 作者: | 林宗泰;Sirunyan, A.M.;Waltenberger, W.;Wulz, C.-E.;De Wolf, E.A.;Luyckx, S.;Python, Q.;Beernaert, K.;Hammad, G.H.;Chaparro Sierra, L.F.;Nicolaou, C.;Givernaud, A.;Dahms, T.;Lange, W.;Walsh, R.;Rathjens, D.;Butz, E.;Kornmayer, A.;Evangelou, I.;Trocsanyi, Z.L.;Mohanty, A.K.;Aziz, T.;Majumder, G.;Singh, G.;Gori, V.;Sguazzoni, G.;Tropiano, A.;Bianco, S.;Ghezzi, A.;Govoni, P.;Vitulo, P.;Fanò, L.;Giassi, A.;Serban, A.T.;Santanastasio, F.;Argiro, S.;Demaria, N.;Potenza, A.;Chang, S.;Lopez-Fernandez, R.;Ahmad, A.;Boimska, B.;Ferreira Parracho, P.G.;Dermenev, A.;Albajar, C.;Siegrist, P.;Eller, P.;Hits, D.;Nef, P.;Pandolfi, F.;Ronga, F.J.;Verzetti, M.;Yang, Y.;Kao, K.Y.;Asavapibhop, B.;Suwonjandee, N.;Bakirci, M.N.;Kangal, E.E.;Levchuk, L.;Meng, Z.;Bell, K.W.;Cockerill, D.J.A.;Cutajar, M.;Lucas, R.;Malik, S.;Petridis, K.;Raymond, D.M.;Cutts, D.;Heintz, U.;Erbacher, R.;Squires, M.;Lacroix, F.;Tu, Y.;Xie, S.;Azzolini, V.;Gaz, A.;Eggert, N.;Ryd, A.;Tkaczyk, S.;Uplegger, L.;Kypreos, T.;Martinez, G.;Barnett, B.A.;Murray, M.;Maravin, Y.;Rebassoo, F.;Bloom, K.;Baumgartel, D.;Zhang, J.;Kubik, A.;Lynch, S.;Brinson, J.;Smith, G.;Wulsin, H.W.;Miller, D.H.;Stone, R.;Rose, K.;Montalvo, R.;Damgov, J.;Velkovska, J.;Gollapinni, S. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | CMS;Electroweak;Physics |
| 日期: | 2015-01-05 |
| 上傳時間: | 2026-04-23 12:15:17 (UTC+8) |
| 出版者: | United States: Elsevier B.V |
| 摘要: | 摘要： A measurement of the inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton–proton collisions at s=8 TeV are presented. The analysis is based on a data sample, corresponding to an integrated luminosity of 19.6 fb−1, collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ→ℓℓℓ′ℓ′, where ℓ=e,μ and ℓ′=e,μ,τ. The measured total cross section σ(pp→ZZ)=7.7±0.5 (stat)−0.4+0.5 (syst)±0.4(theo)±0.2 (lumi) pb, for both Z bosons produced in the mass range 60<mZ<120 GeV, is consistent with standard model predictions. Differential cross sections are measured and well described by the theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZγ couplings at the 95% confidence level: −0.004<f4Z<0.004, −0.004<f5Z<0.004, −0.005<f4γ<0.005, and −0.005<f5γ<0.005.
出版者： United States: Elsevier B.V
出版日期： 2015-01-05
出處： Physics letters. B, 2015-01, Vol.740, p.250-272
資源來源： ScienceDirect (Elsevier) Journals
版權： 2014 The Authors
識別號： ISSN: 0370-2693
識別號： EISSN: 1873-2445
識別號： DOI: 10.1016/j.physletb.2014.11.059 |
| 顯示於類別: | [物理學系] 期刊論文
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