Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/108091

Title:	Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets
Authors:	余欣珊;Levine, Aaron;Poehlsen, Jennifer;Apresyan, Artur;Bagliesi, Giuseppe;Velkovska, Julia;Varelas, Nikos;Seva, Tomislav;Innocente, Vincenzo;Swain, Sanjay Kumar;Hadjiiska, Roumyana;Gascon, Susan;Geiser, Achim;Spalding, William J;Shukla, Prashant;Colaleo, Anna;Piotrzkowski, Krzysztof;Steinbrück, Georg;Avetisyan, Aram;Rose, Anthony;Li, Qiang;Elliott-Peisert, Anna;Farrell, Chris;Mittal, Monika;Junkes, Alexandra;Pant, Lalit Mohan;Tricomi, Alessia;Martinez, German;Cockerill, David JA;Ferencek, Dinko;Marchesini, Ivan;Haas, Jeff;Christopher, Grant;Tosi, Nicolò;Ekmedzic, Marko;Lu, Ying;Brooke, James John;Mott, Alexander;Ahmad, Ashfaq;Mohanty, Ajit Kumar;Spiropulu, Maria;De Moraes Gregores, Eduardo;Malcles, Julie;Dewanjee, Ram Krishna;Tamponi, Umberto;Jain, Shilpi;Luyckx, Sten;Danielson, Thomas;Fabbri, Fabrizio;Berry, Edmund;Chwalek, Thorsten;Dupont-Sagorin, Niels;Paktinat Mehdiabadi, Saeid;Korol, Ievgen;Szillasi, Zoltan;Bauer, Gerry;Woods, Nathaniel;Hatakeyama, Kenichi;Kazana, Malgorzata;Dumanoglu, Isa;Frueboes, Tomasz;Bachtis, Michail;Costa, Salvatore;Gerosa, Raffaele;Letts, James;Kim, Tae Jeong;Saka, Halil;Skatchkov, Nikolai;Piparo, Danilo;Van Mechelen, Pierre;Castaneda Hernandez, Alfredo;Fulcher, Jonathan;West, Christopher;Gomez, Gervasio;Gninenko, Sergei;Dinardo, Mauro Emanuele;Ptochos, Fotios;Timciuc, Vladlen;Wilken, Rachel;Ford, William T;Kovalskyi, Dmytro;Damgov, Jordan;Chao, Yuan;Beri, Suman Bala;Cankocak, Kerem;Van Remortel, Nick;Rodozov, Mircho;Halkiadakis, Eva;Navarria, Francesco;Girgis, Semiray;Bellan, Riccardo;Kim, Gui Nyun;Sanders, Stephen;Chang, Sunghyun;Brochet, Sébastien;De La Cruz, Begona;Goldstein, Joel;Naumann-Emme, Sebastian;Pegoraro, Matteo;George, Christopher;Wolszczak, Weronika
Contributors:	理學院物理學系
Keywords:	Bosons;Experiment;High Energy Physics - Experiment;Jets;Leptons;Mathematical analysis;Particle Physics;Physics;PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;Scattering;Searching;Standard deviation;Vectors (mathematics)
Date:	2015-02-02
Issue Date:	2026-04-23 14:35:46 (UTC+8)
Publisher:	United States: American Physical Society
Abstract:	摘要： A measurement of vector-boson scattering in pp collisions at a center-of-mass energy of 8 TeV is presented. The data sample corresponds to an integrated luminosity of 19.4 fb$^{-1}$ collected with the CMS detector. Candidate events are selected with exactly two leptons, electrons or muons, with the same charge, two jets with large rapidity separation and mass, and moderate missing transverse energy. The signal region is dominated by electroweak same-sign W-boson pair production. The observation agrees with the standard model prediction. The observed significance is 2.0$\sigma$, where a significance of 3.1$\sigma$ is expected for the standard model. Cross section measurements of the $\mathrm{W}^{\pm}\mathrm{W}^{\pm}$ and $\mathrm{W}\mathrm{Z}$ processes in the fiducial region are reported. Bounds on the structure of quartic vector-boson interactions are given in the framework of dimension-eight effective field theory operators, as well as limits on the production of doubly-charged Higgs bosons. A study of vector boson scattering in <mml:math display="inline">pp</mml:math> collisions at a center-of-mass energy of 8 TeV is presented. The data sample corresponds to an integrated luminosity of <mml:math display="inline">19.4 fb−1</mml:math> collected with the CMS detector. Candidate events are selected with exactly two leptons of the same charge, two jets with large rapidity separation and high dijet mass, and moderate missing transverse energy. The signal region is expected to be dominated by electroweak same-sign <mml:math display="inline">W</mml:math>-boson pair production. The observation agrees with the standard model prediction. The observed significance is 2.0 standard deviations, where a significance of 3.1 standard deviations is expected based on the standard model. Cross section measurements for <mml:math display="inline">W±W±</mml:math> and <mml:math display="inline">WZ</mml:math> processes in the fiducial region are reported. Bounds on the structure of quartic vector-boson interactions are given in the framework of dimension-eight effective field theory operators, as well as limits on the production of doubly charged Higgs bosons. A study of vector boson scattering in pp collisions at a center-of-mass energy of 8 TeV is presented. The data sample corresponds to an integrated luminosity of 19.4 inverse femtobarns collected with the CMS detector. Candidate events are selected with exactly two leptons of the same charge, two jets with large rapidity separation and dijet mass, and moderate missing transverse energy. The signal region is expected to be dominated by electroweak same-sign W-boson pair production. The observation agrees with the standard model prediction. The observed significance is 2.0 standard deviations, where a significance of 3.1 standard deviations is expected based on the standard model. Cross section measurements for W+/- W+/- and WZ processes in the fiducial region are reported. Bounds on the structure of quartic vector-boson interactions are given in the framework of dimension-eight effective field theory operators, as well as limits on the production of doubly-charged Higgs bosons. 其他題名： Phys Rev Lett 出版者： United States: American Physical Society 出版日期： 2015-02-06 出處： Physical review letters, 2015-02, Vol.114 (5), p.051801, Article 051801 資源來源： American Physical Society Journals 版權： CC0 1.0 - Universal 識別號： ISSN: 0031-9007 識別號： ISSN: 1079-7114 識別號： ISSN: 1092-0145 識別號： EISSN: 1079-7114 識別號： DOI: 10.1103/PhysRevLett.114.051801 識別號： PMID: 25699433
Appears in Collections:	[Department of Physics] journal & Dissertation

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