10th International Workshop on Multiple Partonic Interactions at the LHC

Session

Cancelled

Not scheduled

Auditorium Santa Cecilia , Perugia, Italy

4. $\chi_{c}$ pair production with large rapidity distance and extra gluon emission

Ms Izabela Babiarz (Institute of Nuclear Physics, Polish Academy of Science)

Recently there has been much interest in the pair production of
quarkonia. The production of quarkonium pairs is expected to receive
an important contribution from double parton scattering (DPS) processes.
There remain a number of open problems, especially with the CMS and ATLAS data.
The effective cross sections $\sigma_{\rm eff}$ found
from empirical analyses are about a factor $2.5$ smaller...

71. A full set of TMD splitting functions in High Energy Factorization

Mirko Serino

Interpolating exactly between collinear and BFKL evolution has been a desire of the QCD community for a long time. Generelizing the method of Curci, Furmanski and Petronzio for the computation of collinear splitting functions, in the wake of previous work by Catani and Hautmann, we provide the real parts of a full set of TMD splitting functions which match the DGLAP, BFKL and CCFM kernels in...

25. ATLAS results on quarkonia and its associated production

Collaboration ATLAS

Abstract: The associated production of vector boson with quarkonia is a key observable for understanding the quarkonium production mechanisms, including the separation of single and double parton scattering components.
This talk will present the latest differential measurements from ATLAS on quarkonium and associated quarkonium production.

46. Azimuthal asymmetries in the Color glass condensate

Dr Vladimir Skokov (Brookhaven national laboratory)

The origin of long-range rapidity correlations observed in p-p and p-Pb collisions at LHC is one of the outstanding questions of strong interactions. The leading theoretical explanations of the so-called "ridge" effect are hydrodynamics and the initial state dynamics, with the latter often described in the Color Glass Condensate (CGC) framework. CGC-based calculations have successfully...

20. Latest results on double parton scattering measurements from the CMS experiment

Collaboration CMS

Results on the measurement of double parton scattering processes will be reported based on the Run-I and Run-II high-luminosity data collected in proton-proton running using the CMS experiment. A future outlook of the studies will be presented for the upcoming high-luminosity LHC data-taking periods.

28. Measurement of distributions sensitive to the underlying event in inclusive Z-boson production in pp collisions at ¿s = 13 TeV with the ATLAS detector

Andreas Warburton (McGill University, (CA))

Abstract: A measurement of charged-particle distributions sensitive to the properties of the underlying event is presented for an inclusive sample of events containing a Z-boson, decaying to a muon pair. Distributions of the charged particle multiplicity and of the charged particle transverse momentum are measured in regions of azimuthal angle defined with respect to the Z-boson direction. The...

30. Monte Carlo generator for the modelling of multijet processes in ATLAS at 13 TeV

Collaboration ATLAS

Abstract: Most of the interesting physics at the LHC involves final states with hadronic jets.

We present Monte Carlo event generator configurations used by the ATLAS experiment

to model multi-jet processes in pp collisions at 13 TeV.
The generators are compared to each other for kinematic distributions sensitive both to the kinematic of hard process and to shower and non-perturbative...

19. MPI and heavy ions: CMS results

Collaboration CMS

The talk will report on the most recent results obtained by the CMS experiment on multiple partonic interactions in heavy-ion collisions

33. Multi-parton scattering effects in heavy flavour production at the LHC

Rafal Maciula (Institute of Nuclear Physics PAN)

In this talk I will summarize results of our studies of hard MPI effects in heavy flavour sector in pp-collisions at the LHC. During last two years we extend our previous studies of double-parton scattering (DPS) in double charm production to simultaneous production of charm and bottom as well as to double bottom production. We have also analyzed in this context associated production of charm...

2. Particle multiplicities in the central region of high-energy collisions from $k_T$-factorization with running coupling corrections

Andre Veiga Giannini

Horowitz and Kovchegov have derived a $k_T$-factorization formula for particle production at small $x$ which includes running coupling corrections. We perform a first numerical analysis to confront the theory with data on the energy and centrality dependence of particle multiplicities at midrapidity in high-energy p+A (and A+A) collisions. Moreover, we point out a strikingly different...

37. Recent results from TOTEM/CMS

Collaboration CMS

The talk will present an overview of the most recent results obtained by the TOTEM and CMS experiments on the so-called forward physics

17. Small system physics from CMS: energy and multiplicity dependence of identified particle production

Collaboration CMS

The CMS collaboration presents two contributions on small-system physics. This contribution will specifically focus on the dependence of identified particle production on energy and multiplicity.

31. Status of measurements of diffractive processes with the ATLAS detector

Collaboration ATLAS

Abstract: The status of diffractive measurements at the ATLAS experiment will be presented. Diffractive dijet production was identified using empty regions of the ATLAS detector (so-called rapidity gaps). The data are compared with Monte Carlo models and the rapidity gap survival probability has been estimated in the kinematic region with high diffractive contribution. If available, we will...

75. Theoretical uncertainties at small x and kT-improved collinear calculations

Benjamin Guiot, (Valparaiso)

Theoretical uncertainties at small x and kT-improved collinear calculations