scholarly journals Pomeron-Pomeron Scattering

2019 ◽  
Vol 64 (8) ◽  
pp. 760 ◽  
Author(s):  
I. Szanyi ◽  
V. Svintozelskyi
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Forward Direction ◽  
Small Contribution ◽  
Double Diffraction ◽  
Quantum Numbers ◽  
Pomeron Trajectory ◽  
New Feature

The central exclusive diffractive (CED) production of meson resonances potentially is a factory producing new particles, in particular, a glueball. The produced resonances lie on trajectories with vacuum quantum numbers, essentially on the pomeron trajectory. A tower of resonance recurrences, the production cross-section, and the resonances widths are predicted. A new feature is the form of a non-linear pomeron trajectory, producing resonances (glueballs) with increasing widths. At LHC energies, in the nearly forward direction, the t-channel both in elastic, single, or double diffraction dissociations, as well as in CED, is dominated by the pomeron exchange (the role of secondary trajectories is negligible, however a small contribution from the odderon may be present).

scholarly journals Investigation of Pionic Contribution in the Lepton and Antilepton Production Cross Section in p-Cu and p-Pt Collision

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
R. Rostami ◽  
F. Zolfagharpour
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Nucleon Nucleon ◽  
Distribution Functions ◽  
Lepton Production ◽  
Detailed Explanation ◽  
Hadronic Collisions ◽  
Theoretical Results

For detailed explanation of the experimental results of lepton production cross section in hadronic collisions such as nucleon-nucleon or nucleon-nuclei, it is of great importance to use quarks and sea quarks distribution function inside free and bound nucleons. In this paper, the role of pion cloud inside the nucleus in the structure function of Cu and Pt nuclei and the EMC ratio of these nuclei were investigated by using harmonic oscillator model. Then, in the framework of the Drell-Yan process and conventional nuclear theory, GRV’s quarks distribution functions and pionic quarks distribution functions were used to calculate lepton and antilepton production cross section in p-Cu and p-Pt scattering. From the results and based on the mentioned model, by considering pionic contribution, the theoretical results are improved.

DOUBLE DIFFRACTION DISSOCIATION IN $\bar pp$ COLLISIONS AT THE FERMILAB TEVATRON

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 216-218
Author(s):  
◽  
M. E. CONVERY
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Double Diffraction ◽  
Pp Collisions ◽  
Diffraction Dissociation ◽  
Regge Theory

We present results from a study of double diffraction dissociation in [Formula: see text] collisions at the Fermilab Tevatron performed by the CDF Collaboration. The production cross section for events with a central pseudorapidity gap (overlapping η = 0) of width Δη0 > 3 is found to be [Formula: see text] at [Formula: see text]. Our results are compared with previous measurements and with predictions based on Regge theory and factorization.

Model for production and decay of a heavy lepton via electron plus photon mode

1981 ◽  
Vol 59 (11) ◽  
pp. 1780-1788
Author(s):  
L. Resnick
Keyword(s):  
Decay Width ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Higgs Field ◽  
Forward Direction ◽  
Mass Scale ◽  
Photon Exchange ◽  
Heavy Lepton ◽  
Photon Mode

A variant of the standard SU(2) × U(1) model is considered for the vertex e1e2γ, where e1 is the electron, e2 a heavy [Formula: see text] lepton, and γ the photon. The model mixes e1 and e2 via a scalar (weak isodoublet) field [Formula: see text] which has a mass scale [Formula: see text]. This is in addition to the usual Higgs field. The decay width for e2 → e1 + γ is calculated. The production cross section in the forward direction for e1 + p → e2 + p via one photon exchange is calculated, where p is the proton. Numerical estimates are made for some cases of experimental interest.

scholarly journals Charged current Drell-Yan production at N3LO

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Claude Duhr ◽  
Falko Dulat ◽  
Bernhard Mistlberger
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross Section ◽  
Production Cross ◽  
Hadron Collider ◽  
Charge Asymmetry ◽  
Charged Current ◽  
Leading Order ◽  
Neutrino Pair ◽  
The Impact

Abstract We present the production cross section for a lepton-neutrino pair at the Large Hadron Collider computed at next-to-next-to-next-to-leading order (N3LO) in QCD perturbation theory. We compute the partonic coefficient functions of a virtual W± boson at this order. We then use these analytic functions to study the progression of the perturbative series in different observables. In particular, we investigate the impact of the newly obtained corrections on the inclusive production cross section of W± bosons, as well as on the ratios of the production cross sections for W+, W− and/or a virtual photon. Finally, we present N3LO predictions for the charge asymmetry at the LHC.

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