Search for anomalous production of highly boosted Z bosons decaying to μ+μ− in proton-proton collisions at [Formula presented] TeV

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题名:	Search for anomalous production of highly boosted Z bosons decaying to μ+μ− in proton-proton collisions at [Formula presented] TeV
作者:	林宗泰;Chatrchyan, S.;Besancon, M.;Choudhury, S.;Dejardin, M.;Denegri, D.;Fabbro, B.;Faure, J.L.;Ferri, F.;Ganjour, S.;Givernaud, A.;Gras, P.;Hamel de Monchenault, G.;Jarry, P.;Locci, E.;Malcles, J.;Millischer, L.;Nayak, A.;Rander, J.;Rosowsky, A.;Shreyber, I.;Titov, M.;Baffioni, S.;Beaudette, F.;Benhabib, L.;Bianchini, L.;Bluj, M.;Broutin, C.;Busson, Pierre;Charlot, C.;Daci, N.;Dahms, T.;Dobrzynski, L.;Granier de Cassagnac, R.;Haguenauer, M.;Mine, P.;Mironov, C.;Naranjo, I.N.;Nguyen, M.;Ochando, C.;Paganini, P.;Sabes, D.;Salerno, R.;Sirois, Y.;Veelken, C.;Zabi, A.;Agram, J.-L.;Andrea, J.;Bloch, D.;Bodin, D.;Brom, J.-M.;Cardaci, M.;Chabert, E.C.;Collard, C.;Conte, E.;Drouhin, F.;Ferro, C.;Fontaine, J.-C.;Gele, D.;Goerlach, U.;Juillot, P.;Le Bihan, A.-C.;van Hove, P.;Fassi, F.;Mercier, D.;Beauceron, S.;Beaupere, N.;Bondu, O.;Boudoul, G.;Chasserat, J.;Chierici, R.;Contardo, D.;Depasse, P.;El Mamouni, H.;Fay, J.;Gascon, S.;Gouzevitch, M.;Ille, B.;Kurca, T.;Lethuillier, M.;Mirabito, L.;Perries, S.;Sordini, V.;Tschudi, Y.;Verdier, P.;Viret, S.
贡献者:	理學院物理學系
关键词:	High Energy Physics - Experiment;Physics
日期:	2013-05-13
上传时间:	2026-04-23 12:55:22 (UTC+8)
出版者:	Elsevier
摘要:	摘要： Results are reported from a search for the anomalous production of highly boosted Z bosons with large transverse momentum and decaying to the dimuon final state. Such Z bosons may be produced in the decays of new heavy particles. The search uses pp collision data at sqrt(s) = 7 TeV, corresponding to an integrated luminosity of 5.0 inverse femtobarns recorded with the CMS detector. The shape of the observed transverse-momentum distribution of Z bosons is consistent with standard-model expectations. Constraints are obtained on models predicting the production of excited quarks decaying via electroweak processes. For excited-quark decays involving only standard-model gauge bosons and coupling strengths, masses of excited quarks below 1.94 TeV are excluded at the 95% confidence level, assuming a compositeness scale equal to the excited-quark mass. For excited-quark production via novel contact interactions, masses below 2.22 TeV are excluded, even if the excited quarks do not couple to gluons. 出版者： Elsevier 出版日期： 2013 出處： Physics letters. B, 2013, Vol.722, p.28-47 資源來源： Elsevier ScienceDirect Journals Complete 版權： CC0 1.0 - Universal 識別號： ISSN: 0370-2693 識別號： EISSN: 1873-2445 識別號： DOI: 10.1016/j.physletb.2013.03.037
显示于类别:	[物理學系] 期刊論文

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