Pomeron and Odderon Contributions at LHC Energies

Merino, C.; Pajares, C.; Ryzhinskiy, M. M.; Shabelski, Yu. M.

doi:10.48550/arxiv.1007.3206

Cited by 5 publications

(6 citation statements)

References 44 publications

(70 reference statements)

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“…These results complement previous data on pp and pp collisions taken at lower energies √ s = 0.02 -1.96 TeV [13][14][15][16][17][18][19][20][21][22][23]. Many of these measurements have been used to constrain phenomenological models of softhadronic interactions and to predict properties at higher energies [24][25][26][27][28][29][30][31][32][33][34][35][36][37]. The recent LHC data may lead to a better theoretical understanding based on a Quantum Chromodynamics (QCD) approach [38][39][40][41].…”

Section: Introductionsupporting

confidence: 83%

Strong longitudinal color field effects in pp collisions at energies available at the Large Hadron Collider

Pop,

Gyulassy,

Barrette

et al. 2010

Preprint

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We study the effect of strong longitudinal color fields (SCF) in p + p reactions up to Large Hadron Collider energies in the framework of the HIJING/B B v2.0 model that combines (collinear factorized) pQCD multiple minijet production with soft longitudinal string excitation and hadronization. The default vacuum string tension, κ0 = 1 GeV/fm, is replaced by an effective energy dependent string tension, κ(s) = κ0(s/s0) 0.06 that increases monotonically with center-of-mass energy. The exponent λ = 0.06 is found sufficient to reproduce well the energy dependence of multiparticle observables in RHIC, Tevatron, as well as recent LHC data. This exponent is half of that predicted by the Color Glass Saturation (CGC) model, λCGC = 0.115, where gluon fusion multiparticle production mechanisms are assumed. In HIJING/B B v2.0, the rapid growth of dN ch /dη with energy is due to the interplay of copious minijet production with increasing of strong color field (SCF) contributions. The large (strange)baryon-to-meson ratios measured at Tevatron energies are well described. A significant enhancement of these ratios is predicted up to the highest LHC energy ( 14TeV). The effect of J J loops and SCF on baryon-anti-baryon asymmetry, and its relation to baryon number transport, is also discussed.

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Section: Introductionsupporting

confidence: 83%

Strong longitudinal color field effects in pp collisions at energies available at the Large Hadron Collider

Pop,

Gyulassy,

Barrette

et al. 2010

Preprint

View full text Add to dashboard Cite

show abstract

“…The quantitative predictions of the QGSM depend on several parameters which were fixed by comparison of the calculations to the experimental data obtained at fixed target energies. The first experimental data obtained at LHC [19,20] show that the model predictions are in reasonable agreement with the data.…”

Section: Introductionsupporting

confidence: 54%

Feynman Scaling Violation on Baryon Spectra in pp Collisions at LHC and Cosmic Ray Energies

Arakelyan¹,

Merino²,

Pajares³

et al. 2013

Ядер. физ.

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A b s t r a c t A significant asymmetry in baryon/antibaryon yields in the central region of high energy collisions is observed when the initial state has non-zero baryon charge. This asymmetry is connected with the possibility of baryon charge diffusion in rapidity space. Such a diffusion should decrease the baryon charge in the fragmentation region and translate into the corresponding decrease of the multiplicity of leading baryons. As a result, a new mechanism for Feynman scaling violation in the fragmentation region is obtained. Another numerically more significant reason for the Feynman scaling violation comes from the fact that the average number of cutted Pomerons increases with initial energy. We present the quantitative predictions of the Quark-Gluon String Model (QGSM) for the Feynman scaling violation at LHC energies and at even higher energies that can be important for cosmic ray physics.PACS. 25.75.Dw Particle and resonance production 1

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“…The quantitative predictions of the QGSM depend on several parameters which were fixed by comparison of the theoretical calculations to the experimental data obtained at fixed target energies. The first experimental data obtained at LHC show [20] that the model predictions are in reasonable agreement with the data.…”

Section: Introductionsupporting

confidence: 52%

“…The differences in the yields of baryons and antibaryons produced in the central (midrapidity) region of high energy pp interactions [14,20,24,25,26,27,28] are significant. Evidently, the appearance of the positive baryon charge in the central region of pp collisions should be compensated by the decrease of the baryon multiplicities in the fragmentation region that leads to an additional reason for Feynman scaling violation.…”

Section: Introductionmentioning

confidence: 99%

Feynman scaling violation due to baryon number diffusion in rapidity space

Arakelyan¹,

Merino²,

Pajares³

et al. 2011

Preprint

Self Cite

View full text Add to dashboard Cite

A significant asymmetry in baryon/antibaryon yields in the central region of high energy collisions is observed when the initial state has non-zero baryon charge. This asymmetry is connected with the possibility of a baryon charge diffusion in rapidity space. Evidently, such a diffusion should decrease the baryon charge in the fragmentation region leading to the corresponding decrease of the multiplicity of leading baryons. As a result, a new mechanism for Feynman scaling violation in the fragmentation region is obtained. We present the quantitative predictions for the Feynman scaling violation at LHC energies and even at higher energies that can be important for cosmic ray physics.

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Pomeron and Odderon Contributions at LHC Energies

Cited by 5 publications

References 44 publications

Strong longitudinal color field effects in pp collisions at energies available at the Large Hadron Collider

Strong longitudinal color field effects in pp collisions at energies available at the Large Hadron Collider

Feynman Scaling Violation on Baryon Spectra in pp Collisions at LHC and Cosmic Ray Energies

Feynman scaling violation due to baryon number diffusion in rapidity space

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