Status of the TOTEM and CT-PPS spectrometer after completion. Also the challenges of future operation of the spectrometer and detectors will be addressed.

I will present several novel physics topics which illuminate features of QCD dynamics at high $x_F$: 1. Higgs hadroproduction at high $x_F$, both diffractive and nondiffractive. 2. The hadroproduction of exotic hadrons such as double-heavy baryons and tetraquarks at high $x_F$. 3. Predictions for hadronic momentum distributions at high $x$ from AdS/QCD. 4. High multiplicity, high rapidity, ridge production arising from the collision of gluonic flux tubes. I will also talk about the crucial role of diffractive deep inelastic lepton-proton scattering for understanding shadowing and anti-shadowing phenomena in nuclear structure functions.

The high energies reachable at the LHC and in possible future hadron, lepton and lepton-hadron colliders offer us a great chance in the search for long-waited signals of New Physics. They offer, however, also a unique opportunity to test the Standard Model in unprecedented kinematic ranges. The study of semi-hard reactions still represent a challenge in the high-energy limit QCD. Here, the fixed-order perturbative description misses the effect of large energy logarithms, which compensate the smallness of the QCD coupling constant and must therefore be resummed to all orders. The Balitsky-Fadin-Kuraev-Lipatov (BFKL) approach is the most powerful tool to resum to all orders these large logarithms both in the leading (LLA) and the next-to-leading (NLA) approximation. With the aim to improve our understanding of QCD dynamics, we propose to study different processes in the NLA BFKL. First, we continue the analysis of two-body final state reactions (i) by addressing open formal problems in the forward jet production (Mueller-Navelet sector) and (ii) by extend the study, recently proposed, of the inclusive production of two hadrons with high transverse momenta and well separated in rapidity. Then, we come up with a totally new possibility, i.e. the analysis of the inclusive production of two heavy quark-antiquark pairs, well separated in rapidity. Our approach is two-fold: (i) studying the photoproduction channel (suitable for the physics at the future lepton colliders); (ii) estimating the hadroproduction effects at the LHC.

I plan to present an overview of non-exponential behaviour in elastic pp scattering, corresponding to a manuscript that I am preparing for review article. Recent results at LHC from 2.76 TeV to 13 TeV will be covered, with emphasis on the implications of recent TOTEM results.

We propose merging of High Energy Factorization with final-state jet quenching effects due to interactions in a quark-gluon plasma, to compute di-jet rates at mid- and forward rapidity. Proposed novel framework allows to consistently study the interplay of initial-state effects with medium interactions, opening the possibility for understanding the dynamics of hard probes in heavy-ion collisions and the QGP evolution in rapidity/azimuthal angle. We present numerical results for realistic experimental cuts.

We present an analysis of data on single inclusive pion production measured by the LHCf collaboration in high-energy proton-proton and proton-nucleus at ultra-forward rapidities, 8.8≤y≤10.8. We also analyse forward RHIC data for calibration purposes. Our analysis relies on the use of a Monte Carlo event generator that combines a perturbative description of the elementary scattering process at partonic level based on the hybrid formalism of the Color Glass Condensate with an implementation of hadronization in the framework of the Lund string fragmentation model. This procedure allows us to reach values of the momenta of the produced particles as low as detected experimentally pt∼0.1 GeV. We achieve a good description of single inclusive spectra of charged particles and neutral pions at RHIC and the LHC respectively, and nuclear modification factors for proton-lead collisions at the LHC. Our results add evidence to the idea that particle production in the domain of very small Bjorken-x is dominated by the saturation effects encoded in the unintegrated gluon distribution of the target. Being forward particle production of key importance in the development of air showers, we stress that this approach allows for a theoretically controlled extrapolation of our results to the scale of ultra-high energy cosmic rays, thus serving as starting point for future works on this topic.

In this talk we provide an overview over recent theoretical and phenomenological results. In particular we address the description of the energy dependence of vector meson production at the LHC, and a recently obtained matching between Lipatov's high energy effective action and the Color Glass Condensate formalism. We we also comment on recent result concerning the evolution of transverse momentum dependent parton distributions defined within high energy factorization.

We discuss production of $W^+ W^-$ pairs in proton-proton collisions induced by two-photon fusion including, for a first time, transverse momenta of incoming photons. The unintegrated inelastic fluxes (related to proton dissociation) of photons are calculated based on modern parametrizations of deep inelastic structure functions in a broad range of their arguments ($x$ and $Q^2$). In our approach we can get separate contributions of different $W$ helicities states. Several one- and two-dimensional differential distributions are shown and discussed. The present results are compared to the results of previous calculations within collinear factorization approach. Similar results are found except of some observables such as e.g. transverse momentum of the pair of $W^+$ and $W^-$. We find large contributions to the cross section from the region of large photon virtualities. We show decomposition of the total cross section as well as invariant mass distribution into polarisation states of both W bosons. %which suggest that the collinear approximation %may be not adequate. The role of the longitudinal $F_L$ structure function is quantified. Its inclusion leads to a 4-5 \% decrease of the cross section, almost independent of $M_{WW}$.

We use the Quark-Gluon String Model (QGSM) to obtain a quantitatively good description of the phi-meson production experimental data, both in hadron nucleon collisions, and in collisions on nuclear targets, for a wide energy range. In particular, we present the theoretical description of the rapidity dependence of dn/dy for pp and PbPb collisions. The experimantal data show a weak dependence of vs energy for pp collisions in the LHC energy region. When we use this experimental behavior as an input to compute the theoretical rapidity dependence of the production density dn/dy, we obtain a growth with y higher than the experimental one. The precise measurement of the shape of the rapidity dependence of dn/dy, its value in the forward region, and the corresponding normalization for pp collisions at the LHC energies would be of a great interest, and very important in fixing the form of the theoretical fragmentation functions for phi-meson production in pp and PbPb collisions at LHC.

The MoEDAL experiment at the LHC is optimised to detect highly-ionising particles such as magnetic monopoles, dyons and (multiply) electrically-charged stable massive particles predicted in a number of theoretical scenarios. MoEDAL, deployed in the LHCb cavern, combines passive nuclear track detectors with magnetic monopole trapping volumes, while backgrounds are being monitored with an array of MediPix detectors. The detector concept and its physics reach is presented with emphasis given to recent results on monopoles, current analysis developments and future plans in particular in connection with the LHC forward regions.

Elastic scattering and optics at the LHC

We present progress toward the theoretical understanding of BFKL effects in dijet processes in order to better isolate kinematical regimes relevant to experiments. BFKL effects have been notoriously difficult to clearly identify in processes involving two jets. The theoretically simplest example, Mueller-Navelet or inclusive dijets, has been shown to be well described via DGLAP evolution. We describe progress in identifying new observables that more strongly depend on BFKL effects that might show clear signatures at the LHC. The cleanest experimental example is that of Mueller-Tang jets. Here dijets are produced with a large rapidity gap resulting from single Pomeron exchange. Theoretically this requires a more complicated description, but recent progress in understanding the combination of the NLL kernel and the NLO impact factors have made a theoretical prediction possibly that is consistent with current results from the LHC

Very forward inclusive jet energy spectra measured with the CASTOR calorimeter at the CMS experiment at the LHC will be presented.

The LHC-forward (LHCf) experiment, situated at the LHC accelerator, has measured neutral particles production in a very forward region (pseudo-rapidity > 8.4) in proton-proton and proton-lead collisions. The main purpose of the LHCf experiment is to test the hadronic interaction models used in ground based cosmic rays experiments to simulate cosmic rays induced air-showers in the Earth atmosphere. The experiment is composed of two independent detectors located at 140 metres from the ATLAS interaction point (IP1) on opposite sides along the beam axis; each detector is composed by two sampling and position sensitive calorimeters. In this talk, the latest physics results compared with the predictions of DPMJET, EPOS, PYTHIA, QGSJET and SIBYLL event generators will be presented. The already published transverse and longitudinal momentum spectra of neutral pions in p-p and p-Pb collisions (at 7 TeV and 5.02 TeV, respectively) will be shown. Then, the latest physics results from p-p collisions at 13 TeV (photon and neutron spectrum) and the preliminary results from p-Pb collisions at 8.16 TeV (photon spectrum) will be discussed.

Preliminary results from the high mass diphoton analysis using the CMS and TOTEM Precision Proton Spectrometer will be presented. Using the information from forward protons in CT-PPS, we are able to search for BSM diphoton events with a background free selection.