scholarly journals Prompt photon production in proton collisions as a probe of parton scattering in high energy limit

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Krzysztof Golec-Biernat ◽  
Leszek Motyka ◽  
Tomasz Stebel
Keyword(s):  
High Energy ◽  
Photon Production ◽  
Prompt Photon ◽  
Energy Limit ◽  
Proton Collisions ◽  
High Energy Limit ◽  
Parton Scattering

scholarly journals Investigating the Soft Processes within the QCD Color Dipole Picture

2019 ◽  
Vol 64 (8) ◽  
pp. 705 ◽  
Author(s):  
M. V. T. Machado
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Energy Limit ◽  
Proton Proton ◽  
Proton Collisions ◽  
High Energy Limit ◽  
Color Dipole ◽  
Soft Interactions ◽  
Soft Processes ◽  
Dipole Picture

We consider the QCD parton saturation models to describe the soft interactions at the high-energy limit. The total and elastic cross-sections, as well as the elastic slope parameter, are obtained for proton-proton and pion-proton collisions and compared to recent experimental results.

scholarly journals Two-parton scattering in the high-energy limit

2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Simon Caron-Huot ◽  
Einan Gardi ◽  
Leonardo Vernazza
Keyword(s):  
High Energy ◽  
Energy Limit ◽  
High Energy Limit ◽  
Parton Scattering

HIGH ENERGY LIMIT IN QCD

2011 ◽  
Vol 26 (09) ◽  
pp. 603-623
Author(s):  
ANNA M. STASTO
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Energy Limit ◽  
High Energy Limit ◽  
Ion Collisions ◽  
Small X

We briefly review some selected topics in the small x physics. In particular, we discuss the progress in the problem related to the resummation at small x and the parton saturation phenomena. Finally we discuss some phenomenological applications to deep inelastic scattering, hadron and heavy ion collisions.

scholarly journals TESTING THE DYNAMICS OF HIGH ENERGY SCATTERING USING VECTOR MESON PRODUCTION

2004 ◽  
Vol 19 (36) ◽  
pp. 2655-2671 ◽  
Author(s):  
RIKARD ENBERG
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
High Energy ◽  
Large Momentum ◽  
Energy Limit ◽  
Vector Meson Production ◽  
Proton Collisions ◽  
Energy Scattering ◽  
Rapidity Gap ◽  
High Energy Scattering

I review work on diffractive vector meson production in photon–proton collisions at high energy and large momentum transfer, accompanied by proton dissociation and a large rapidity gap. This process provides a test of the high energy scattering dynamics, but is also sensitive to the details of the treatment of the vector meson vertex.The emphasis is on the description of the process by a solution of the non-forward BFKL equation, i.e. the equation describing the evolution of scattering amplitudes in the high-energy limit of QCD. The formation of the vector meson and the nonperturbative modeling needed is also briefly discussed.

scholarly journals The β-ray spectrum of Ra E

1939 ◽  
Vol 170 (941) ◽  
pp. 190-205 ◽  
Keyword(s):  
Distribution Curve ◽  
High Energy ◽  
Energy Limit ◽  
Total Change ◽  
High Energy Limit ◽  
Nuclear Collisions ◽  
The Past ◽  
Low Energy Electrons ◽  
Energy Distribution Curve ◽  
Chamber Measurements

Interest in the continuous β-ray spectrum has been revived during the past few years by the discovery of induced β-ray activity and the difficulty which has been experienced in incorporating an account of the phenomenon in the theory of the nucleus. Attention has been focused on two features of the spectrum: the high-energy limit, the accurate measurement of which yields the total change in nuclear energy associated with the β disintegration, and the form of the energy distribution curve, which is discriminative in theories of the β-ray emission process. Owing to the convenience of R aE as a source, the β-ray spectrum of this element has received considerable attention, and a comprehensive table of previous work published in a recent paper by O’Conor (1937) shows that recent values of the high-energy limit obtained with magnetic spectrometers are in fair agreement. The form of the R aE spectrum, however, is still not known with any certainty. This can be made clear with the help of Table I, which sets out the results and significant experimental details of the work carried out since 1935 with magnetic spectrometers. Some recent work with cloud expansion chambers is not included because the results are rather discordant. With the relatively low energy electrons of R aE and the high probability of nuclear collisions in the chamber, measurements of the energies of the β-particles are extremely difficult, and the results are probably not as reliable as those obtained with magnetic spectrometers.

scholarly journals PROBING HIGH ENERGY PROPERTY OF STRING SCATTERING BY EFFECTIVE FIELD THEORY

2013 ◽  
Vol 21 ◽  
pp. 153-154
Author(s):  
CHUAN-TSUNG CHAN ◽  
SHOICH KAWAMOTO ◽  
DAN TOMINO
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Open String ◽  
High Energy ◽  
Effective Field ◽  
Energy Limit ◽  
High Energy Limit ◽  
Linear Relations ◽  
Massive Spin ◽  
Symmetry Structure

It is known that infinitely many linear relations among string scattering amplitudes appear in high energy limit. These linear relations would imply a symmetry structure that is not manifest before taking the high energy limit. Motivated by this observation, we study an effective field theory of massive spin-2 and spin-1 particles, and try to understand what kind of structure reproduces the linear relations among the amplitudes of bosonic open string.

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