Hard-soft correlations in hadronic collisions - GDR QCD

23 juil. 2018, 12:00 → 25 juil. 2018, 13:30 Europe/Paris

Amphithéâtre Recherche (Laboratoire de Physique de Clermont-Ferrand, Université Clermont Auvergne, Clermont-Ferrand)

Helene FONVIEILLE (LPC-Clermont), Hervé Moutarde (CEA-IRFU-SPHN), Raphaël Dupré (IPN Orsay), Sarah Porteboeuf-Houssais (LPC)

This workshop aims at discussing latest experimental and theoretical results concerning correlations between hard and soft particles produced in high energetic hadronic collisions. 

This workshop is supported by working group of the GDR QCD : "Simple and multiple interactions within partons in nucleus". 

 It follows previous workshops: "Meeting de lancement GDR QCD - interactions simples et multiples entre partons dans les nucléons": https://indico.in2p3.fr/event/13459/  and "Partons and Nuclei" https://indico.in2p3.fr/event/14438/.

Ample time is devoted to discussion among participants.

Registration is free of charge, lunches and coffee breaks are supported by the GDR QCD, the Laboratoire de Physique de Clermont (LPC), The Université Clermont Auvergne (UCA) and the Clermont Auvergne Metropole.

Please join the meeting by joining the workshop in Amphitheater Recherche at LPC/UCA, Clermont-Ferrand, or by clicking this link:

https://vidyoportal.cern.ch/join/vj8qD93AI1 

If you want to join by phone, please use one of the phone numbers listed in the link below: 

http://information-technology.web.cern.ch/services/fe/howto/users-join-vidyo-meeting-phone

and enter the meeting extension 105602 in order to join.

 

Workshop_Hard-soft_Clermont_July2018.jpg

lundi 23 juillet

12:00 → 14:00 Lunch with lunch box

14:00 → 14:10 Welcoming and introduction

Orateur: Sarah Porteboeuf-Houssais (LPC)

HSCIHC_welcome.pptx

14:10 → 14:50 Effects of saturation in high-multiplicity pp collisions

Parton distributions in the protons colliding with multiplicity much higher than the mean value, are biased to higher parton densities, leading to enhanced effects of saturation. This and the effect of mutual boosting of the saturation scales significantly increase the gluon density at small x, and correspondingly the production rate of J/psi
and pT broadening, in a good accord with data.

Orateur: Boris Kopeliovitch

kopeliovich.pdf

14:50 → 15:30 Hard-soft correlations with the MFT

Orateur: Antonio Uras (IPNL Lyon)

Alice_23Jul2018_Uras.pdf

15:30 → 16:10 Hard-soft correlations in the EPOS event generator

Orateur: Tanguy Pierog (KIT, IKP)

EPOS3_correI_Pierog.pdf

16:10 → 16:40 Coffee Break

16:40 → 17:20 Charmonium production versus multiplicity in PYTHIA8

Orateur: Steffen Weber

JpsiPythia.pdf

17:20 → 18:00 Heavy-flavour with charged-particle correlations and collective effects in p-Pb collisions at $\sqrt{s_\mathrm{NN}}$= 5.02 TeV with ALICE at the LHC

Orateur: Marianna Mazzilli

HFCorrelations_MMazzilli.pdf

18:00 → 18:40 Correlations between low-pt Z bosons and soft gluons in p+p and p+A collisions

Orateur: Cyrille Marquet (CPHT - Ecole Polytechnique)

clermont18.ppt

20:00 → 23:00 Social Dinner - Odevie

1 Rue Eugène Gilbert
63000 Clermont-Ferrand

Place de Jaude (central place in Clermont-Ferrand city)
A Tram/bus line.
15 euros, at participant charge to be paid directly at the restaurant.

mardi 24 juillet

09:00 → 09:40 Proton structure via double parton scattering

Orateur: Matteo Rinaldi

Rinaldi_2018_mpi.pdf

Rinaldi_2018.pdf

09:40 → 10:20 Hard-soft correlations with LHCb

Orateur: Michael Winn

Winn.pdf

10:20 → 10:50 Coffee Break

10:50 → 11:30 Transverse geometry and hard-soft correlations in high-energy pp collisions

Orateur: Christian Weiss

weiss18_hardsoft.pdf

11:30 → 12:10 J/Psi production in pp and pPb

Orateur: Jana Crkovska (IPN Orsay)

12:10 → 14:00 Lunch Break - Cocktail

14:00 → 14:40 Probing gluon nPDF with heavy quarkonium

Orateur: Hua-Sheng Shao (CERN)

Shao_GDRQCD.pdf

14:40 → 15:20 Soft particle production in different multiplicity environments

Orateur: Livio Bianchi (INFN Torino - Universita' di Torino)

LivioBianchi_Clermont2018.pdf

15:20 → 15:50 Coffee break

15:50 → 16:30 Open charm production in dense hadronic environnement

The production of open-heavy flavours in pp and p–nucleus collisions as a function of the charged-particle multiplicity (dNch/dη) can give insight into multiple parton interactions and into the interplay between hard and soft processes. Moreover, the comparison of the production of charmed mesons with and without strange-quark content and the baryon-to-meson ratio can help to study collective-like effects that in recent years have been observed in high multiplicity pp and p–nucleus collisions. These effects are typical of nucleus–nucleus collisions in which a Quark-Gluon Plasma with high-energy density is formed. This state produces a system with dense hadronic environment. It is interesting to investigate heavy-ion typical phenomena in the heavy-flavour sector across collisions systems as a function of the event activity, and, vice versa, to study in detail the coupling of heavy quarks to the ”bulk” in heavy-ion collisions. Indeed, the measurement of the production of open heavy-flavour hadrons in nucleus–nucleus collisions can provide important information about the microscopic interactions of heavy quarks with the medium constituents. In particular, the mea- surement of the azimuthal anisotropies at low transverse momentum, quantified by the elliptic flow v2, gives insight into the participation of the heavy quarks in the collective expansion of the system and their possible thermalisation in the medium. Additional insight into the dynamics of the heavy quarks can be provided by the application of the event-shape engineering (ESE) technique to the D-meson v2. Mea- suring the D-meson v2 in classes of events defined on the basis of the average flow in a given centrality class allows us to evaluate the correlation between the elliptic flow of soft hadrons and D mesons.
In this talk, the latest results on the production of open-heavy flavour production,
including the ratio between the production of D+s and non-strange D mesons, as a
function of dNch/dη in pp, p–Pb and Pb–Pb collisions at √sNN = 5.02 TeV with
ALICE will be presented. The enhancement of the relative abundance of Λ+c baryons
compared to D mesons in pp and p–Pb collisions with respect to that measured in
+−√
e e collisions will be discussed. Finally, the first application of the ESE technique
to the measurement of the D-meson v2 in Pb–Pb collisions at sNN = 5.02 TeV with ALICE will be also presented.

Orateur: Fabrizio Grosa

CharmedHadrons_GDRQCD2018_Grosa_v2.pdf

16:30 → 17:10 Round table : soft-hard correlations in hadronic collisions, what's next ?

HSCIHC_round_table.pptx

mercredi 25 juillet

09:00 → 09:40 Double parton scattering studies in associated quarkonium production at the LHC and Tevatron

Orateur: Nodoka Yamanaka (IPN Orsay, Paris-Sud U., CNRS-IN2P3)

2018.07.25_yamanaka.pdf

09:40 → 10:20 Hard soft correlations with CMS

Orateur: Émilien Chapon (SPP / Irfu / CEA Saclay)

chapon_GDRHardSoft2018.pdf

10:20 → 10:40 Coffre break

10:40 → 11:20 AFTER@LHC

Orateur: Jean-Philippe Lansberg (IPNO - Paris-Sud U. - CNRS/IN2P3)

AFTER-Clermont_250718.pdf

11:20 → 11:30 Closing

HSCIHC_closing.pdf

11:30 → 13:00 Lunch with Lunch box