Transverse momentum distributions of baryons at LHC energies

Transverse momentum spectra of protons and anti-protons from RHIC ($\sqrt{s}$ = 62 and 200 GeV) and LHC experiments ($\sqrt{s}$= 0.9 and 7 TeV) have been considered. The data are fitted in the low $p_T$ region with the universal formula that includes the value of exponent slope as a main parameter. It is seen that the slope of low-$p_T$ distributions is changing with energy. This effect impacts on the energy dependence of average transverse momenta, which behaves approximately as $s^{0.06}$ that is similar to the previously observed behavior for $\Lambda^0$-baryon spectra. In addition, the available data on $\Lambda_c$ production from LHCb at $\sqrt{s}= 7$ TeV were also studied. The estimated average $$ is bigger than this value for protons proportionally to masses. The preliminary dependence of hadron average transverse momenta on their masses at LHC energy is presented

Triple-Pomeron Diffraction Peak as a Signature of Proton Interaction at the Sources of VHE Gamma and Neutrino in Space

Since it is not clear yet whether or not the baryon matter takes part in UHE particle production in space, the specifics of proton production spectra at proton colliders, such as diffraction peak, diquark fragmentation, and baryon-antibaryon pair production, are analyzed in this paper in order to conclude that source of gamma and neutrino spectra is UHE proton interaction of the energy Ep = 6*10^12 GeV.Comment: 3 pages, 4 figures, submitted to the Proceedings of UHECR2022, Gran Sasso, Ital

High Energy Proton-Proton collisions and Baryonium Dark Matter

The positive hyperon production asymmetries that have been measured at LHC are real demonstrations of string junction role in the baryon charge transfer at baryon production in HE proton-proton interactions. In order to invent the neutral heavy particle with zero baryon charge as a candidate for Dark Matter, it is necessary to turn back to the times of dual topological representation of hadron physics and pomeron theory. Taking into account that the junction of three gluons (SJ) has the positive baryon number, as well as the antijunction {antiSJ) is of negative baryon charge, the neutral self-connected baryonium configuration with zero baryon charge is torus that is covered by a discrete number of hexagons with 3 string junction and 3 antijunction vertices each. The possibilities to observe such baryonium tori are discussed in this paper for three cases: collisions at p-p colliders, the cosmic particles interactions with atmosphere and in the form of particle spectra from relativistic jets at the Active Galaxy Nuclei as well.Comment: 3 pages, 3 figures, to appear in the Proceedings of NuDM202

Leading Effects in the Spectra of Λc\Lambda_c and Λˉc\bar{\Lambda}_c Produced in Σ−p\Sigma^-p, pppp and π−p\pi^-p Interactions

The spectra of leading and nonleading charmed baryons ($\Lambda_c$ and $\bar{\Lambda}_c$) as well as the asymmetries between these spectra measured in $\Sigma^-A$, $\pi^-A$ and pA collisions at $p_L= 600 GeV/c$ in the E781 experiment are simultaneously described within the framework of Quark-Gluon String Model (QGSM). It is shown that the charmed baryon spectra can be fitted by QGSM curves calculated with the parameter of diquark fragmentation, $a_f^{\Lambda_c}$=0.006. It was obtained in this experiment that the asymmetry between the spectra of $\Lambda_c$ and $\bar{\Lambda}_c$ in $\pi^-A$ collisions is of nonzero value. It might be described in our model only assuming that the string junction is transfered from target proton into the kinematical region of pion projectile fragmentation.Comment: LaTeX, 12 pages, 2 epsfigures, replaced with the minor corrections in language and in references, submitted to Phys.At.Nucl. 200

Baryon charge transfer and production asymmetry between Lambda^0 and antiLambda^0 in hadron interactions

The predictions were done for asymmetry between production spectra of Lambda^0 and antiLambda^0 at the energy of LHC experiments. The value of A(s) should be situated in the band between two curves that are calculated in Quark-Gluon String Model with two possible values of intercept alpha_{SJ}(0)=0,5 and 0,9. Both curves describe the asymmetries measured at lower energies up to RHIC experiments. The data of H1 experiment can be fitted only with alpha_{SJ}(0)=0,9.Comment: LateX, 7 pages and 2 figures, poster presentation at PANIC'05, Santa Fe, October 200

Interactions of Heavy Hadrons using Regge Phenomenology and the Quark Gluon String Model

The search for stable heavy exotic hadrons is a promising way to observe new physics processes at collider experiments. The discovery potential for such particles can be enhanced or suppressed by their interactions with detector material. This paper describes a model for the interactions in matter of stable hadrons containing an exotic quark of charges $\pm {1/3}e$ or $\pm {2/3}e$ using Regge phenomenology and the Quark Gluon String Model. The influence of such interactions on searches at the LHC is also discussed

Quark-Gluon String Model Description of Baryon Production in K^{\pm}N Interactions

The process of baryon production in K p collisions at high energies is considered in the framework of the Quark-Gluon String Model. The contribution of the string-junction mechanism to the strange baryon production is analysed. The results of numerical calculations are in reasonable agreement with the data on inclusive spectra of p, Lambda, bar{Lambda}, and on the bar{Lambda}/Lambda asymmetry. The predictions for Xi and Omega baryons are presented.Comment: 19 pages, 7 figure

Feynman scaling violation on baryon spectra in pp collisions at LHC and cosmic ray energies

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.Comment: 21 pages, 11 figures, and 1 table. arXiv admin note: substantial text overlap with arXiv:1107.1615, arXiv:1007.320

Proceedings of the 38th International Symposium on Multiparticle Dynamics (ISMD08)

Proceedings of ISMD08Comment: Edited by: J. Bartels, K. Borras, G. Gustafson, H. Jung, K. Kutak, S. Levonian, and J. Mnic