181055 Conferences false [["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"], ["0", "ZIP Archive"]] Massachusetts Inst. of Technology (US) wyslouch@mit.edu 1597 wyslouch@mit.edu <p> The Quark Matter series of conferences aims to reunite international specialists in the field of experimental and theoretical heavy ion physics.</p> <p> This fundamental research consists of studying excited matter at the subatomic level to understand how the constituents dynamically arrange themselves to form ordinary matter, and to understand how this organization emerged from the primordial matter created by the Big Bang at the beginning of the universe.</p> <p> The Quark Matter 2012 conference is the twenty-third edition of this prestigious series of international conferences organized approximately every 18 months since 1982. Recent instances of the conference have taken place in Shanghai, China (2006), Jaipur, India (2008), Knoxville, USA (2009). and Annecy, France (2011).</p> <p style="margin-bottom:0"> <strong>Please Note:</strong></p> <ul> <li> Student day will take place on Sunday, August 12, 2012</li> <li> Nuclear Physics A will be sponsoring a NPA Young Scientist Award at QM&#39;12</li> </ul> False 2012-08-12T08:00:00 2012-08-18T18:00:00 2012-03-06T10:23:27 2012-10-03T19:22:31 US/Eastern Yale University (US) john.harris@yale.edu 483 false [["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"], ["0", "ZIP Archive"]] 0 Oral Presentation Columbia University dvp@nevis.columbia.edu Charles University Prague dolezal@ipnp.troja.mff.cuni.cz Ambassador 2012-08-17T17:10:00 2012-08-17T17:30:00 00:20 Bottom quark is a very important probe to study the hot, dense medium produced in the heavy ion collisions. Bottom quark is produced at the relatively early stage of the nucleus-nucleus collisions and may have a small gluon radiation due to a suppression of small angle gluon radiation `dead cone effect’. Because the heavy mass of b-hadrons, muons from semi-leptonic b-hadron decays tend to have larger angle with respect to the jet axis. This information can be used to tag b-jets. Specifically, the transverse momentum of the muon with respect to the b-jet axis, pT^{rel}, is used to differentiate b-jets from the background charm and light quark jets. In this talk, we present the b-jet suppression R_CP, which is defined as the ratio of the average N_coll scaled yield in central collisions to that in peripheral collisions (60-80%), as a function of the muon momentum, jet momentum and the number of participants average N_part in Pb+Pb collisions at 2.76 TeV. The result is also compared with the inclusive heavy flavor suppression, which was obtained by studying single muons decayed semi-leptonically from the from the b- and c-quark containing hadrons. slides doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link slides doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 0 doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 2013-05-21 2013-05-22