1–5 Sept 2015
Queen Mary University of London
Europe/London timezone

New CTEQ-Jefferson Lab (CJ15) analysis of parton distributions (20+10min)

4 Sept 2015, 11:30
30m
Physics Lecture Theatre (G.O. Jones)

Physics Lecture Theatre

G.O. Jones

PDFs PDFs

Speaker

Wally Melnitchouk (Jefferson Lab)

Description

We present the results of a new global QCD analysis of PDFs from the CTEQ-Jefferson Lab collaboration (dubbed "CJ15"), which includes several new data sets and recent theoretical developments. In particular, we study the constraints from new D0 data on *W* boson asymmetries on the *d/u* PDF ratio at large *x*, and, indirectly, on the models of nuclear corrections in the deuteron. The analysis also considers for the first time the impact of Jefferson Lab data on the free neutron/deuteron structure function ratio at large *x*, and reanalyzes the light antiquark asymmetry in the proton from Drell-Yan data using more flexible parametrizations and nuclear corrections to deuterium cross sections. The results provide a new set of baseline PDFs which can be used to more reliably calibrate the effects of future data from the LHC.

Primary authors

Alberto Accardi (Hampton University) Cynthia Keppel (Jefferson Lab) Eric Christy (Hampton University) Joseph F. Owens (Florida State University) Lucas Brady (UC Santa Barbara) Nobuo Sato (Jefferson Lab) Peter Ehlers (University of Washington) Peter Monaghan (Christopher Newport University) Wally Melnitchouk (Jefferson Lab)

Presentation materials