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| 題名: | Search for a narrow, spin-2 resonance decaying to a pair of Z bosons in the qq̄ℓ+ℓ- final state |
| 作者: | 林宗泰;Chatrchyan, S.;Bansal, M.;Cornelis, T.;Walsh, S.;Giammanco, A.;Mercadante, P.G.;Asawatangtrakuldee, C.;Polic, D.;Luetic, J.;Müntel, M.;Fedi, G.;Locci, E.;Haguenauer, M.;Kargoll, B.;Calligaris, L.;Costanza, F.;Geiser, A.;Spiridonov, A.;Sikler, F.;Ujvari, B.;Ahuja, S.;Banerjee, S.;Mazumdar, K.;Fahim, A.;Colafranceschi, S.;Musenich, R.;Tabarelli de Fatis, T.;Lista, L.;Bisello, D.;Dosselli, U.;Margoni, M.;Tosi, M.;Torre, P.;Giassi, A.;Tenchini, R.;Son, D.C.;Kim, H.;Shah, M.A.;Karjavin, V.;Gninenko, S.;Vlasov, E.;Klyukhin, V.;Bayshev, I.;Troshin, S.;Djordjevic, M.;Fernandez Bedoya, C.;Albajar, C.;Rodríguez-Marrero, A.Y.;Sobron Sanudo, M.;Vilar Cortabitarte, R.;Bernet, C.;Giordano, D.;Janot, P.;Musella, P.;Orsini, L.;Rolandi, G.;Siegrist, P.;Veres, G.I.;Donegà, M.;Chang, Y.H.;Lei, Y.J.;Ozpineci, A.;Harper, S.;Kennedy, B.W.;Cutajar, M.;Fulcher, J.;Futyan, D.;Hatherell, Z.;Lazic, D.;Breedon, R.;Erbacher, R.;Rutherford, B.;Jeng, G.Y.;Evans, D.;Duarte, J.;Xie, S.;Drell, B.R.;Uplegger, L.;Rodriguez, J.L.;Jenkins, M.;Barnett, B.A.;Pedro, K.;Dutta, V.;Roland, C.;Singovsky, A.;Keller, J.;Kumar, A.;Wood, D.;Kolb, J.;Luo, W.;Hill, C.;Betchart, B.;Demortier, L.;Arora, S.;Contreras-Campana, C.;Lath, A.;Rekovic, V.;Toback, D.;Delannoy, A.G.;Grogg, K.S. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | CMS;Graviton;Kaluza–Klein;Physics |
| 日期: | 2013-01-29 |
| 上傳時間: | 2026-04-23 12:48:29 (UTC+8) |
| 出版者: | Elsevier B.V |
| 摘要: | 摘要： Results are presented from a search for a narrow, spin-2 resonance decaying into a pair of Z bosons, with one Z-boson decaying into leptons (e+e− or μ+μ−) and the other into jets. An example of such a resonance is the Kaluza–Klein graviton, GKK, predicted in Randall–Sundrum models. The analysis is based on a 4.9 fb−1 sample of proton–proton collisions at a center-of-mass energy of 7 TeV, collected with the CMS detector at the LHC. Kinematic and topological properties including decay angular distributions are used to discriminate between signal and background. No evidence for a resonance is observed, and upper limits on the production cross sections times branching fractions are set. In two models that predict Z-boson spin correlations in graviton decays, graviton masses are excluded lower than a value which varies between 610 and 945 GeV, depending on the model and the strength of the graviton couplings.
出版者： Elsevier B.V
出版日期： 2013-01-29
出處： Physics letters. B, 2013-01, Vol.718 (4-5), p.1208-1228
資源來源： Elsevier ScienceDirect Journals Complete
版權： 2012 CERN
識別號： ISSN: 0370-2693
識別號： EISSN: 1873-2445
識別號： DOI: 10.1016/j.physletb.2012.11.063 |
| 顯示於類別: | [物理學系] 期刊論文
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