Measurement of the Z/γ*+b-jet cross section in pp collisions at √s = 7 TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105404

Title:	Measurement of the Z/γ*+b-jet cross section in pp collisions at √s = 7 TeV
Authors:	林宗泰;Chatrchyan, S.;Sillou, D.;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.;Marionneau, M.;Millischer, L.;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.;Elgammal, S.;Granier de Cassagnac, R.;Haguenauer, M.;Mine, P.;Mironov, C.;Ochando, C.;Paganini, P.;Sabes, D.;Salerno, R.;Sirois, Y.;Thiebaux, C.;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.;Greder, S.;Juillot, P.;Karim, M.;Le Bihan, A.-C.;van Hove, P.;Fassi, F.;Mercier, D.;Baty, C.;Beauceron, S.;Beaupere, N.;Bedjidian, M.;Bondu, O.;Boudoul, G.;Boumediene, D.;Brun, H.;Chasserat, J.;Chierici, R.;Contardo, D.;Depasse, P.;El Mamouni, H.;Falkiewicz, A.;Fay, J.;Gascon, S.;Gouzevitch, M.;Ille, B.;Kurca, T.;Le Grand, T.;Lethuillier, M.;Mirabito, L.;Perries, S.;Sordini, V.;Tosi, S.;Tschudi, Y.;Verdier, P.;Viret, S.
Contributors:	理學院物理學系
Keywords:	High Energy Physics - Experiment;Physics
Date:	2012-01-01
Issue Date:	2026-04-23 12:22:51 (UTC+8)
Publisher:	Springer
Abstract:	摘要： The production of b jets in association with a Z/gamma* boson is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV and recorded by the CMS detector. The inclusive cross section for Z/gamma* + b-jet production is measured in a sample corresponding to an integrated luminosity of 2.2 inverse femtobarns. The Z/gamma* + b-jet cross section with Z/gamma* to ll (where ll = ee or mu mu) for events with the invariant mass 60 < M(ll) < 120 GeV, at least one b jet at the hadron level with pT > 25 GeV and abs(eta) < 2.1, and a separation between the leptons and the jets of Delta R > 0.5 is found to be 5.84 +/- 0.08 (stat.) +/- 0.72 (syst.) +(0.25)/-(0.44) (theory) pb. The kinematic properties of the events are also studied and found to be in agreement with the predictions made by the MadGraph event generator with the parton shower and the hadronisation performed by PYTHIA. 出版者： Springer 出版日期： 2012 出處： The journal of high energy physics, 2012, Vol.6 資源來源： Publicly Available Content Database (Proquest) 版權： CC0 1.0 - Universal 識別號： ISSN: 1126-6708 識別號： EISSN: 1029-8479 識別號： DOI: 10.1007/JHEP06(2012)126
Appears in Collections:	[Department of Physics] journal & Dissertation

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