We analyze the recently discovered phenomena in elastic proton-proton scattering at LHC, challenging standard Regge-pole theory: low-$|t|$ "break" (departure from exponential behavior of diffraction cone), accelerating rise with energy forward slope $B(s,t=0)$, absence secondary dips and bumps on cone role odderon phase amplitude, $\rho(13~TeV)=0.1\pm0.01$, especially its contribution dip region, measured by TOTEM. Relative contributions different components to amplitude are evaluated fitted model.

The following effects in the nearly forward ("soft") region of LHC are proposed to be investigated: 1) At small |t| fine structure cone (Pomeron) shouldbe scrutinized: a) a break near $t\approx - 0.1 ~ GeV$^2, due two-pion threshold, and required by t-channel unitarity, is expected, b) possible small-period oscillations between $t=0$ dip region. 2) In measuring elastic $pp$ scattering total cross section at LHC, experimentalists urged treat $\sigma_t,$ ratio $\rho$, slope $B$ luminosity...

The proton-proton and proton-antiproton inelasticity profiles in the impact parameter display very interesting sensitive features which cannot be deduced solely from current large body of high-energy scattering data. In particular, phenomenological studies exhibit a link between ratio real to imaginary parts elastic amplitude at finite momentum transfer, corresponding change character inelastic processes central peripheral collisions. We describe how theoretical model, accommodating existing...

We predict glueball/oddball resonances lying on the pomeron/odderon trajectories. A simple new form of trajectories, with threshold and asymptotic behaviour required by analyticity unitarity, is proposed. The parameters these (pomeron odderon) trajectories are fitted to data high-energy elastic proton-proton proton-antiproton scattering. extrapolated resonance region masses widths glueballs oddballs. may be used calculate processes central exclusive diffraction (CED).

A Regge pole model for Pomeron–Pomeron total cross section in the resonance region $$\sqrt{M^2}\le $$ 5 GeV is presented. The saturated by direct-channel contributions from Pomeron as well two different f trajectories, accompanied isolated $$f_0(500)$$ dominating $$\sqrt{M^{2}}\le 1$$ region. slowly varying background taken into account. calculated cannot be measured directly, but an essential part of central diffractive processes. In preparation future calculations production at hadron...

A Pomeron model applicable to both ``soft'' and ``hard'' processes is suggested tested against the high-energy data from virtual photon-induced reactions. The universal, containing two terms, a soft hard one, whose relative weight varies with $\stackrel{\texttildelow{}}{{Q}^{2}}={Q}^{2}+{M}_{V}^{2}$, where ${Q}^{2}$ virtuality of incoming photon ${M}_{V}$ mass produced vector particle. With small number adjustable parameters, fits all available on meson production deeply Compton scattering...

We review elastic and diffractive scattering of protons (called also "forward physics") with emphasis on the LHC data, especially those deviating from expectations based extrapolations earlier measurements at ISR, Fermilab thus triggering searches for new ideas, models theories. list these data provide a brief introduction available theoretical approaches, mainly analyticity, crossing symmetry unitarity, particularly Regge-pole model realizing concepts. Fits to are presented tensions between...

Starting from a simple empirical parametrization of the scattering amplitude, successfully describing dip-bump structure elastic $pp$ in $t$ at fixed values $s$, we construct toy model interpolating between missing energy intervals to extract Odderon contribution difference $\overline{p}p$ and total cross sections. The is fitted data $\sqrt{s}=23.5\text{ }\text{ }\mathrm{GeV}$ 7 TeV used its ratio Pomeron. From our fits, unit intercept follows, as predicted by J. Bartels, L. N. Lipatov, G....

A dual-Regge model with a nonlinear proton Regge trajectory in the missing mass channel, describing experimental data on low-mass single diffraction dissociation, is constructed. Predictions for LHC energies are given.

We calculate the present expansion of our Universe endowed with relict colored objects - quarks and gluons that survived hadronization either as isolated islands quark-gluon "nuggets", or spread uniformly in Universe. In first scenario, QNs can play role dark matter. second we demonstrate uniform energy providing late-time accelerating

By using a Regge-pole model for vector meson production (VMP), successfully describing the HERA data, we analyse correlation between VMP cross sections in photon-induced reactions at and those ultra-peripheral collisions Large Hadron Collider (LHC). The rapidity distributions of proton-proton 13~TeV lead-lead 2.76 5.02 TeV are investigated. transverse momentum distribution nuclear coherent is also addressed. Predictions future experiments on $J/\psi$ $\psi(2S)$ presented.

In this paper we consider the Universe at late stage of its evolution and deep inside cell uniformity. At these scales, is filled with inhomogeneously distributed discrete structures (galaxies, groups clusters galaxies). Supposing that a small fraction colored objects escaped hadronization survived up to now in form quark–gluon nuggets (QNs), also taking into account radiation, investigate scalar perturbations FRW metrics due inhomogeneities dustlike matter as well fluctuations QNs...

In Friedmann–Lobachevsky space-time with a radius of curvature slowly varying over time, we study numerically the problem motion particle moving in Cornell potential. The mass is taken to be reduced charmonium system. contrast similar flat space, Lobachevsky space potential has finite depth and, as consequence, number bound states system and continuum energy spectrum also possible. this paper, well scattering

We discuss some properties of the Pomeron in high energy elastic hadron-hadron and deep inelastic lepton-hadron scattering. A number issues concerning nature origin are briefly recalled here. The novelty this paper resides essentially its presentation; we strive at discussing all these various following unifying perspective : it is our contention that one same reactions. Various examples will be provided illustrating why do not believe should invoke additional tools to describe data. For...

In this paper we present an analytic result for the evolution in ${Q}^{2}$ of structure functions neutrino-nucleon interaction, valid at twist-2 region small values Bjorken $x$ variable and soft nonperturbative input. special case flat initial conditions, include calculation also contribution twist-4 gluon recombination corrections, whose effect is explicitly determined. Finally, estimate resulting charged-current total cross section discuss its behavior ultrahigh energies.

Exclusive $J/\ensuremath{\Psi}$ electroproduction is studied in the framework of analytic $S$-matrix theory. The differential and integrated elastic cross sections are calculated using modified dual amplitude with Mandelstam analyticity model. model applied to description available experimental data proves be valid a wide region kinematical variables $s$, $t$, ${Q}^{2}$. Our can used also as universal background parametrization for extraction tiny resonance signals.

Based on the nuclear equation of state, curvature correction term to surface tension coefficient is calculated. Tolman's $\ensuremath{\delta}$ shown be sensitive Skyrme force parametrization. The temperature dependence Tolman length, important in heavy ion collision experiments, derived. In present approach related bulk properties matter through state. results are compared with existing theoretical calculations based Gibbs-Tolman formalism and predictions concerning its interparticle distance.

A model for exclusive diffractive resonance production in proton–proton collisions at high energies is presented. This able to predict double differential distributions with respect the mass and transverse momentum of produced region $$\sqrt{M^2}\lesssim $$ 5 GeV. The based on convoluting Pomeron distribution proton Pomeron–Pomeron–meson total cross section. section saturated by direct-channel contributions from as well two different f trajectories, accompanied isolated $$_0(500)$$...

Anticipating forthcoming publication by the TOTEM collaboration of low-[Formula: see text] elastic scattering data at [Formula: = 13 and 2.76 TeV, hereby we emphasize correlation between two prominent structures seen upon otherwise exponential diffraction cone, namely a “break” staying fixed around text]0.1 GeV 2 dip moving with energy logarithmically inwards; while ISR, are separated distance about 1 , LHC, comes close to periphery “break”, thus affecting its parametrization. An unbiased...