Summary - Remarks

Forward Physics Monte-Carlo predictions on the charge asymmetry of production of the W boson produced in a single diffractive context are presented. The potential of using the charge asymmetry of the W boson for probing the partonic structure of the Pomeron is assessed in view of the ATLAS measurement plans.

After describing some analyses on forward jets at LHC, which I find not very satisfactory for various reasons, I show a possible method of improvement: matching the usual BFKL description with fixed NLO calculations. I also discuss the impact of the jet algorithm choice on the results.

We study the production of two forward jets with a large interval of rapidity at hadron colliders, which was proposed by Mueller and Navelet as a possible test of the high energy dynamics of QCD, within a complete next-to-leading logarithm framework. We show that using the Brodsky-Lepage-Mackenzie procedure to fix the renormalization scale leads to a very good description of the recent CMS data at the LHC for the azimuthal correlations of the jets. We argue, based on the comparison of the lowest order non trivial corrections O(alpha_s^3) to the cross section with predictions of an exact calculation, that the inclusion of next-to-leading order corrections to the jet vertex significantly reduces the importance of energy-momentum non-conservation which is inherent to the BFKL approach.

Predictions of diffractive, total, and total-inelastic cross sections, based on the RENORM pre-LHC renormalization model of diffraction, are compared with the latest experimental results and extended to forthcoming measurements at higher LHC energies, future colliders, and cosmic-ray interactions.

I present updates on work done within the Durham model of central exclusive production, and in particular the first results of a new Monte Carlo for this process: Superchic 2. This builds on, but greatly extends the existing Superchic MC, with updates including a wider range of processes (Higgs, Jets...) as well as significant changes to the MC implementation, including a fully differential treatment of the soft survival factor in all cases.

(to follow - speaker to be determined)

I would like to overwiew a method to introduce Sudakov effects to unintegrated gluon density promoting it to be hard scale dependent. The advantage of the approach is that it guarantees that the gluon density is positive definite and that on integrated level the Sudakov effects cancel. As a case study we apply the method to calculate angular correlations in production of forward-forward dijet and RpA ratio for p+p vs. p+Pb collision.

We discuss diffractive production of open charm and bottom mesons at the LHC. The differential cross sections for single- and central-diffractive mechanisms for cc¯ and bb¯ pair production are calculated in the framework of the Ingelman-Schlein model corrected for absorption effects. In this approach one assumes that the pomeron has a well defined partonic structure, and that the hard process takes place in a pomeron-proton or proton-pomeron (single diffraction) or pomeron-pomeron (central diffraction) processes. Here, leading-order gluon-gluon fusion and quark-antiquark anihilation partonic subprocesses are taken into consideration, which are calculated within standard collinear approximation. Both pomeron flux factors as well as parton distributions in the pomeron are taken from the H1 Collaboration analysis of diffractive structure function and diffractive dijets at HERA. The extra corrections from subleading reggeon exchanges are explicitly calculated and are also taken into consideration. Several quark-level differential distributions are shown. The hadronization of charm and bottom quarks is taken into account by means of fragmentation function technique. Predictions for single- and central-diffractive production in the case of inclusive D and B mesons, as well as D \bar D pairs are presented, including detector acceptance of the ATLAS, CMS and LHCb Collaborations. The experimental aspects of possible standard and dedicated measurements are carefully discussed.

Consider hadron-hadron scattering. Feinberg - Pomeranchuk and Good - Walker noted independently, more than 50 years ago, that the elastic and diffraction ortho normal states do not diagonalize simultaneously the interaction matrix T. Consequently, we construct a virtual system of eigen states with which we can identify the elastic and diffraction amplitudes as combinations of the eigen states elastic scattering amplitudes. This observation initiates far reaching consequences. This talk will focus on the consequent elastic and diffraction channels cross sections properties with an emphasize on high mass diffraction which is coupled to t-channel screening. Special attention will be given to the roll of diffraction as a unitarity saturation signature.

Latest results on Central Exclusive Production measured by the LHCb collaboration are presented and plans for the upcoming 13 TeV collisions at the LHC are discussed.

We propose a new measurement of leading high-pT forward pion production in pi^0 -> gamma+gamma decay channel in association with heavy quarkonia (such as chi_c, J/psi and Upsilon) production in mu+ mu- decay channel at mid-rapidities. The background for this process comes from Drell-Yan proces and is severely reduced in the considering kinematics allowing for precision studies for high-pT J/psi QCD production mechanisms in both pp and pA collisions. Specific observables such azimuthal and pT correlations between forward gamma + gamma and central mu+ mu- pairs have been advised to probe for underlined soft QCD effects.

High energy cosmic ray measurements rely heavily on air shower simulations which make intensive use of hadronic interactions models. Forward and minimum bias physics measurements are important to test and tune these models. In this chapter, theoretical motivations and past and future LHC measurements relevant for air shower development are described.

LHCf was designed to measure neutral particles emitted around zero degree of LHC hadron collisions. The measured spectra of photons, pi-zero and neutrons are expected to constrain the hadronic interaction models used for cosmic-ray physics. In the LHC Run2, LHCf plans to take data during 'special physics run' period at the end of May. During this operation, LHCf will trigger ATLAS and the common data will be useful to tag zero degree particles to be diffractive or non-diffractive. In this presentation, outline and past results by LHCf together with the prospects in Run2 will be presented.

I will recall the main feaatures of an accurate phenomenological model to describe successfully near-forward elastic scattering in a wide energy range, including ISR, SPS and Tevatron colliders. A large step in energy domain is accomplished with the LHC collider, running soon again, giving the opportunity to confront the new data with the predictions of our theoretical approach.

Will be known later, It is not agreed yet...