scholarly journals The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations

2014 ◽  
Vol 2014 (7) ◽  
Author(s):  
J. Alwall ◽  
R. Frederix ◽  
S. Frixione ◽  
V. Hirschi ◽  
F. Maltoni ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Parton Shower ◽  
Tree Level ◽  
Differential Cross Sections ◽  
Leading Order

scholarly journals High Order QCD Predictions for Inclusive Production ofWBosons inppCollisions ats=13 TeV

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Hasan Ogul ◽  
Kamuran Dilsiz ◽  
Emrah Tiras ◽  
Ping Tan ◽  
Yasar Onel ◽  
...  
Keyword(s):  
Perturbative Qcd ◽  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Charge Asymmetry ◽  
Inclusive Production ◽  
Differential Cross Sections ◽  
Leading Order ◽  
Central Values ◽  
Lepton Charge

Predictions of fiducial cross sections, differential cross sections, and lepton charge asymmetry are presented for the production ofW±bosons with leptonic decay up to next-to-next-to-leading order (NNLO) in perturbative QCD. Differential cross sections ofW±bosons andWboson lepton charge asymmetry are computed as a function of lepton pseudorapidity for a defined fiducial region inppcollisions ats=13 TeV. Numerical results of fiducialW±cross section predictions are presented with the latest modern PDF models at next-to-leading order (NLO) and NNLO. It is found that the CT14 and NNPDF 3.0 predictions with NNLO QCD corrections are about 4% higher than the NLO CT14 and NNPDF 3.0 predictions while MMHT 2014 predictions with NLO QCD corrections are smaller than its NNLO QCD predictions by approximately 6%. In addition, the NNLO QCD corrections reduce the scale variation uncertainty on the cross section by a factor of 3.5. The prediction of central values and considered uncertainties are obtained using FEWZ 3.1 program.

scholarly journals NEW MESUREMENTS OF NUCLEON STRUCTURE FUNCTIONS FROM CCFR/NuTeV

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 202-204 ◽  
Author(s):  
A. Bodek ◽  
U. K. Yang ◽  
T. Adams ◽  
A. Alton ◽  
C. G. Arroyo ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Structure Functions ◽  
Charm Production ◽  
Nucleon Structure ◽  
Differential Cross Sections ◽  
Leading Order ◽  
Theoretical Predictions ◽  
Model Independent ◽  
Physics Model

We report on the extraction of the structure functions F2 and [Formula: see text] from CCFR νμ-Fe and [Formula: see text]-Fe differential cross sections. The extraction is performed in a physics model independent (PMI) way. This first measuremant for ΔxF3, which is useful in testing models of heavy charm production, is higher than current theoretical predictions. Within 5% the F2 (PMI) values measured in νμ and μ scattering are in agreement with the predictions of Next-to-Leading-Order PDFs (using massive charm production schemes), thus resolving the long-standing discrepancy between the two measurements.

scholarly journals Exclusive photoproduction of a γ ρ pair with a large invariant mass

2017 ◽  
Vol 2017 (2) ◽  
Author(s):  
R. Boussarie ◽  
B. Pire ◽  
L. Szymanowski ◽  
S. Wallon
Keyword(s):  
Transverse Momentum ◽  
Invariant Mass ◽  
Cross Sections ◽  
Differential Cross ◽  
Scattering Amplitude ◽  
Differential Cross Sections ◽  
Leading Order ◽  
Collinear Factorization

Abstract Exclusive photoproduction of a γ ρ pair in the kinematics where the pair has a large invariant mass and the final nucleon has a small transverse momentum is described in the collinear factorization framework. The scattering amplitude is calculated at leading order in α s and the differential cross sections for the process where the ρ−meson is either longitudinally or transversely polarized are estimated in the kinematics of the JLab 12-GeV experiments.

Differential cross sections in antiproton- and proton-helium collisions

1999 ◽  
Vol 32 (4) ◽  
pp. L73-L79 ◽  
Author(s):  
Kh Khayyat ◽  
T Weber ◽  
R Dörner ◽  
M Achler ◽  
V Mergel ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Differential Cross Sections
Sign in / Sign up

Export Citation Format

Share Document