scholarly journals A Study of High Transverse Momentum Direct Photon Production in Interactions of 500 GeV/c $\pi^{-}$ and Proton Beams on a Beryllium Target

1991 ◽  
Author(s):  
Brajesh Chandra Choudhary
Keyword(s):  
Transverse Momentum ◽  
Photon Production ◽  
Direct Photon ◽  
High Transverse Momentum ◽  
Proton Beams ◽  
Beryllium Target ◽  
Direct Photon Production

scholarly journals Inclusiveπ0,η, and direct photon production at high transverse momentum inp+pandd+Aucollisions atsNN=200GeV

2010 ◽  
Vol 81 (6) ◽  
Author(s):  
B. I. Abelev ◽  
M. M. Aggarwal ◽  
Z. Ahammed ◽  
A. V. Alakhverdyants ◽  
B. D. Anderson ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Photon Production ◽  
Direct Photon ◽  
High Transverse Momentum ◽  
Direct Photon Production

Measurement of direct photon production at Tevatron fixed target energies

2005 ◽  
Vol 20 (16) ◽  
pp. 3756-3758
Author(s):  
◽  
MICHAEL BEGEL
Keyword(s):  
Transverse Momentum ◽  
Cross Sections ◽  
Photon Production ◽  
Direct Photon ◽  
Fixed Target ◽  
Direct Photons ◽  
Proton Beams ◽  
Direct Photon Production

Measurements of the production of high-pT direct photons by a 515 GeV/c π- beam and 530 and 800 GeV/c proton beams in interactions with Be and H 2 targets are presented. The data span the kinematic ranges of 3.5 < pT < 12 GeV/c in transverse momentum and 1.5 units in rapidity. The inclusive direct-photon cross sections are compared with NLO pQCD calculations and expectations based on a phenomenological parton-kT model.

scholarly journals Direct photon production at low transverse momentum in proton-proton collisions at s=2.76 and 8 TeV

2019 ◽  
Vol 99 (2) ◽  
Author(s):  
S. Acharya ◽  
F. T.-. Acosta ◽  
D. Adamová ◽  
J. Adolfsson ◽  
M. M. Aggarwal ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Photon Production ◽  
Direct Photon ◽  
Proton Proton ◽  
Proton Collisions ◽  
Direct Photon Production ◽  
8 Tev ◽  
Proton Proton Collisions

scholarly journals Measurement of direct photon production at large transverse momentum inπ−p,π+p, andppcollisions at 300 GeV/c

1987 ◽  
Vol 36 (1) ◽  
pp. 8-15 ◽  
Author(s):  
C. De Marzo ◽  
M. De Palma ◽  
C. Favuzzi ◽  
G. Maggi ◽  
E. Nappi ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Photon Production ◽  
Direct Photon ◽  
Large Transverse Momentum ◽  
Direct Photon Production

scholarly journals DIRECT PHOTON PRODUCTION IN pp AND $p {\bar p}$ COLLISIONS AT HIGH ENERGIES

2007 ◽  
Vol 22 (02n03) ◽  
pp. 541-545
Author(s):  
TOMASZ PIETRYCKI ◽  
ANTONI SZCZUREK
Keyword(s):  
Transverse Momentum ◽  
Cross Sections ◽  
Good Description ◽  
Photon Production ◽  
Low Energy ◽  
Direct Photon ◽  
Parton Distributions ◽  
High Energies ◽  
Direct Photon Production ◽  
Standing Problem

The invariant cross sections for direct photon production in hadron-hadron collisions are calculated for several initial energies (SPS, ISR, [Formula: see text], RHIC, Tevatron, LHC) including initial parton transverse momenta within the formalism of unintegrated parton distributions (UPDF). Kwieciński UPDFs provide very good description of all world data, especially at SPS and ISR energies. Inclusion of the QCD evolution effects and especially their effect on initial parton transverse momenta allowed to solve the long-standing problem of understanding the low energy and low transverse momentum data.

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