[Theory-seminars] Theory Seminar reminder - today 2pm

[Andrea Signori]

Theory Seminar
Wednesday, January 17
2:00pm - CEBAF Center, Room L102
Thomas Mehen (Duke U.) : Quarkonium production in jets
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Bluejeans room: the link to connect is available at https://www.jlab.org/div_dept/theory/seminars/2018-spring-theory-seminar.html
Abstract:
This talk will describe new tests of quarkonium production using quarkonia that are produced within jets. We study the distribution in the fraction 
z of a jet's longitudinal momentum carried by the quarkonium. The z distribution is sensitive to the underlying NRQCD production mechanism. 
Analytic calculations the z distributions in SCET that incorporate Next-to-Leading-Log (NLL) resummation disagree with default PYTHIA predictions. 
We describe a modified simulation method which agrees well with NLL analytic calculations. This method is then successfully applied to recent 
LHCb measurements of J/psi within jets. We discuss the implications of this measurement for extractions of NRQCD long-distance matrix elements. 
Finally, we discuss other observables involving quarkonium within jets which may be useful for discriminating between NRQCD production mechanisms.

-- 
Postdoctoral researcher 
Theory Center - Jefferson Lab 
12000 Jefferson Avenue,  
Newport News, VA 23606 USA 
CEBAF center, office A211
Tel: +1 (757) 269-6735






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