The predictions were done for asymmetry between production spectra of Λ 0 andΛ 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 α 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 α SJ (0)=0,9.
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 ± 1 3 e or ± 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.1 The term stable is taken to mean that the particle will not decay during its traversal of a detector.
O. I. Piskounova † P.N.Lebedev Physical Institute, LPI, Moscow, Russia Transverse momentum spectra of protons and anti-protons from RHIC ( √ s = 62 and 200 GeV) and LHC experiments ( √ s= 0.9 and 7 TeV) have been considered. The data are fitted in the low pT region with the universal formula that includes the value of exponent slope as a main parameter. It is seen that the slope of low-pT 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 Λ 0 -baryon spectra. In addition, the available data on Λc production from LHCb at √ s = 7 TeV were also studied. The estimated average < pT > 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.
The event of astroparticle collision at high energy was detected in 1975 during the balloon flight in stratosphere. The hundred particle tracks in x-ray films have been re-analyzed in the style of LHC experiments: rapidity distributions of charged particles and transverse mass spectra of multi particle production have been built. The comparison of multiple histograms with the knowledge accumulated in Quark-Gluon String Model gives us the conclusion that it was the carbon nucleus collision with the matter of atmosphere at the c.m.s. equivalent energy √ s ≥ 5 TeV. After QGSM analysis of these scarce data, we know the following: 1) the value of maximal rapidity of one projectile proton and 2) the density of particle multiplicity in the central rapidity region. Such a way, we can practically distinguish how the astroparticle interaction is similar to, or differs from average A-A collision event at LHC. The data include some features of new physics, as an example, it may be baryonic DM particle collision. Previously, the suggestion was done that baryonic Dark Matter cannot be reproduced in accelerators. It appears in the space at a huge mass density near the giant objects like Black Holes. Finally, we conclude that the cosmic ray experiments on the high altitude in atmosphere are, on one hand, good supplements to the LHC measurements. On the other hand, they are able to observe events of new astroparticle collision in the full kinematical region.
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