Angular analysis of the decay B0 → K⁎0μ+μ− from pp collisions at √s=8 TeV

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题名:	Angular analysis of the decay B0 → K⁎0μ+μ− from pp collisions at √s=8 TeV
作者:	余欣珊;Levine, Aaron;Poehlsen, Jennifer;Apresyan, Artur;Bagliesi, Giuseppe;Velkovska, Julia;Varelas, Nikos;Wöhrmann, Clemens;Seva, Tomislav;Innocente, Vincenzo;Swain, Sanjay Kumar;Hadjiiska, Roumyana;Gascon, Susan;Geiser, Achim;Spalding, William J;Shukla, Prashant;Roscher, Frank;Colaleo, Anna;Piotrzkowski, Krzysztof;Steinbrück, Georg;Avetisyan, Aram;Rose, Anthony;Li, Qiang;Elliott-Peisert, Anna;Farrell, Chris;Mittal, Monika;Junkes, Alexandra;Pekkanen, Juska;Pant, Lalit Mohan;Tricomi, Alessia;Martinez, German;Cockerill, David JA;Ferencek, Dinko;Marchesini, Ivan;Haas, Jeff;Tosi, Nicolò;Ekmedzic, Marko;Lu, Ying;Alyari, Maral;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;Fabbri, Fabrizio;Berry, Edmund;Chwalek, Thorsten;Paktinat Mehdiabadi, Saeid;Nowatschin, Dominik;Korol, Ievgen;Szillasi, Zoltan;Woods, Nathaniel;Hatakeyama, Kenichi;Kazana, Malgorzata;Dumanoglu, Isa;Frueboes, Tomasz;Brandt, Stephanie;Bachtis, Michail;Costa, Salvatore;Gerosa, Raffaele;Letts, James;Kim, Tae Jeong;Saka, Halil;Skatchkov, Nikolai;Piparo, Danilo;Beck, Lana;Van Mechelen, Pierre;Castaneda Hernandez, Alfredo;Fulcher, Jonathan;West, Christopher;Gomez, Gervasio;Gninenko, Sergei;Dinardo, Mauro Emanuele;Ptochos, Fotios;Ford, William T;Dini, Paolo;Kovalskyi, Dmytro;Damgov, Jordan;Chao, Yuan;Beri, Suman Bala;Cankocak, Kerem;Lesko, Zachary;Van Remortel, Nick;Rodozov, Mircho;Halkiadakis, Eva;Navarria, Francesco;Girgis, Semiray;Bellan, Riccardo;Kim, Gui Nyun;Sanders, Stephen;Brochet, Sébastien;De La Cruz, Begona;Goldstein, Joel;Naumann-Emme, Sebastian;Pegoraro, Matteo
贡献者:	理學院物理學系
关键词:	B0 decays;CMS;Experiment;Particle Physics;physics
日期:	2016-02-10
上传时间:	2026-04-23 11:42:36 (UTC+8)
出版者:	United States: Elsevier
摘要:	摘要： The angular distributions and the differential branching fraction of the decay $ \mathrm{ B^0 \to K^{}(892)^0 \mu^{+} \mu^{-} }$ are studied using data corresponding to an integrated luminosity of 20.5 fb$^{-1}$ collected with the CMS detector at the LHC in pp collisions at $\sqrt{s} =$ 8 TeV. From 1430 signal decays, the forward-backward asymmetry of the muons, the $\mathrm{ K^{}(892)^0 }$ longitudinal polarization fraction, and the differential branching fraction are determined as a function of the dimuon invariant mass squared. The measurements are among the most precise to date and are in good agreement with standard model predictions. The angular distributions and the differential branching fraction of the decay B0→K⁎(892)0μ+μ− are studied using data corresponding to an integrated luminosity of 20.5 fb −1 collected with the CMS detector at the LHC in pp collisions at s=8 TeV . From 1430 signal decays, the forward–backward asymmetry of the muons, the K⁎(892)0 longitudinal polarization fraction, and the differential branching fraction are determined as a function of the dimuon invariant mass squared. The measurements are among the most precise to date and are in good agreement with standard model predictions. The angular distributions and the differential branching fraction of the decay B0 to K0(892) mu mu are studied using data corresponding to an integrated luminosity of 20.5 inverse femtobarns collected with the CMS detector at the LHC in pp collisions at sqrt(s) = 8 TeV. From 1430 signal decays, the forward-backward asymmetry of the muons, the K0(892) longitudinal polarization fraction, and the differential branching fraction are determined as a function of the dimuon invariant mass squared. The measurements are among the most precise to date and are in good agreement with standard model predictions. 出版者： United States: Elsevier 出版日期： 2015-12-11 出處： Physics letters. B, 2015-12, Vol.753 資源來源： ScienceDirect 識別號： ISSN: 0370-2693 識別號： DOI: 10.1016/j.physletb.2015.12.020
显示于类别:	[物理學系] 期刊論文

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