Skip to main content
Browse by:

Effective March 10, 2020, all Duke-sponsored events over 50 people have been cancelled, rescheduled, postponed or virtualized.
Please check with the event contact regarding event status. For more information, please see

TNT Colloquium: Simultaneous QCD analysis of quantum probability distributions [NCSU]

Event Image
Icon calendar
Tuesday, October 08, 2019
Icon time
3:30 pm - 4:30 pm
Icon location
Icon speaker
Wally Melnitchouk
Icon series
Triangle Nuclear Theory Colloquium

We perform the first simultaneous global QCD analysis of parton distributions and fragmentation functions (generically, quantum probability distributions) from a Monte Carlo analysis of high-energy lepton and hadron scattering data. Inclusion of semi-inclusive deep-inelastic scattering data reveals a strong suppression of the strange quark distribution at parton momentum fractions x ~ 0.01, in contrast with the ATLAS observation of enhanced strangeness at the LHC. The combined fit reveals significant correlations between the strange quark density and the strange-to-kaon fragmentation function needed to simultaneously describe kaon production in lepton-lepton and lepton-hadron scattering. The methodology developed here can be applied in future studies of multidimensional distributions, such as TMDs and GPDs.

Contact: Jennifer Solis