Probing the Strong Interaction at A Fixed Target ExpeRiment with the LHC beams

12 janv. 2014, 18:00 → 17 janv. 2014, 16:00 Europe/Paris

Amphitheater (Ecole de Physique des Houches)

Andry Rakotozafindrabe (CEA Saclay, IRFU/SPhN), Cynthia Hadjidakis (IPN Orsay), Ingo Schienbein (LPSC), Javier Albacete (Granada U.), Jean-Philippe Lansberg (IPNO - Paris Sud 11)

This is the second exploratory workshop aiming at studying in detail the opportunity and feasibility of a fixed-target experiment using the LHC beams extracted by a bent crystal.

A special emphasis will be put on studies related to Strong Interactions. Complementarity with existing experiments at the LHC, at SPS, at CEBAF, at Fermilab and RHIC will also be the cornerstone of the discussions

dimanche 12 janvier

18:30 → 19:30 Welcome

19:30 → 20:30 Dinner

lundi 13 janvier

09:00 → 12:30 A Fixed-Target ExpeRiment

Président de session: Dr Frédéric FLEURET (LLR-Ecole polytechnique, CNRS/IN2P3)

09:00 Introductory statements (workshop organisation, ...)

09:20 AFTER@LHC in a few figures (25'+5')

Orateur: Dr Cynthia Hadjidakis (IPN Orsay)

Slides LesHouches-Cynthia.pdf

09:50 Recent progress of the AFTER project (25'+5')

Orateur: Dr Andry Rakotozafindrabe (CEA Saclay, IRFU/SPhN)

Transparents newsAFTERatLHC-AndryR.pdf

10:20 Coffee break

10:50 Overview of MC tools (35'+5')

Orateur: Mlle Laure MASSACRIER (IPNL)

Transparents talk_after_Laure.pdf

11:30 Discussion on the working group organization

Orateur: Everybody (Everywhere)

12:30 → 14:30 Lunch

14:30 → 19:00 Spin Physics with AFTER

Président de session: Dr Cynthia Hadjidakis (IPN Orsay)

14:30 Drell-Yan and TMD at Compass (40'+5')

Orateur: Oleg Denisov

Transparents denisov_After_les_Houches_14.pdf denisov_After_les_Houches_14.ppt

15:15 Accessing the gluon TMD with quarkonium + photon SSA at AFTER (30'+5')

Orateur: Marc SCHLEGEL (University of Tuebingen, Germany)

Transparents Schlegel_LesHouches_2014_V9short.pdf

15:50 TMD gluon distributions and quarkonium production in unpolarized pp collisions (30'+5')

Orateur: Cristian Pisano (Nikhef and VU University Amsterdam)

Transparents cristian_pisano.pdf

16:25 Discussion (30')

16:55 Coffee break

17:25 Quarkonium polarization studies (30'+5')

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

Transparents LivioBianchi_AFTER_LesHouches2014.pdf

18:00 Quark tensor and axial charges within the Schwinger-Dyson formalism (30'+5')

We calculate the tensor and axial charges of the quark in the QCD-like theory in the Landau gauge by solving the Schwinger-Dyson equation. It is found that the dressed tensor and axial charges of the quark are significantly suppressed against the bare quark contribution, and the result is quite consistent with the analyses in the collinear factorization approach and the lattice QCD. We show that the suppression of the quark tensor and axial charges is due to the superposition of the spin flip of the quark arising from the successive emission of gluons dressing the tensor and axial vertices.

Orateur: Nodoka Yamanaka (Kyoto University)

Transparents 2014.01.13_AFTER2014_yamanaka.pdf

18:35 Discussions

19:00 → 20:00 Welcome cocktail reception

20:00 → 21:30 Dinner

mardi 14 janvier

08:30 → 10:15 PDF studies with AFTER

Président de session: Dr Jean-Philippe Lansberg (IPNO - Paris-Sud U. - CNRS/IN2P3)

08:30 Introduction to (n)PDF fits (30'+5')

Orateur: Prof. Fredrick Olness (SMU)

Transparents olness_v6.pdf

09:05 Reweighting vs. refitting & the possible impact of AFTER in (n)PDF fits (30'+5')

Orateur: Maria Pia Zurita (University of Santiago de Compostela, Spain)

Transparents AFTER-at-LesHouches-2014-2.pdf

09:40 Nuclear PDFs and quarkonia (30'+5')

Orateur: Dr Elena Ferreiro (Department of Particle Physics, University of Santiago de Compostela, Spain)

10:15 → 10:45 Coffee break

10:45 → 12:15 Working sessions

10:45 WG1

10:45 WG2

10:45 WG3

12:15 → 17:30 Lunch & afternoon free (until 5:30 pm)

17:30 → 19:45 Nucleon and nuclear structure

Président de session: Dr Cynthia Hadjidakis (IPN Orsay)

17:30 The future of Compass (30'+5')

Orateur: Dr Stephane Platchkov (CEA Saclay, IRFU/SPhN)

Transparents Platchkov-LesHouches.pptx

18:05 Low x physics with AFTER ? (30'+5')

Orateur: Prof. Javier Albacete (Granada U.)

Transparents AFTER2014.pdf

18:40 Discussions

19:45 → 20:45 Dinner

mercredi 15 janvier

08:30 → 10:15 Connexions with other projects

Président de session: Dr Enrico Scomparin (INFN-Torino (Italy))

08:30 pA physics with LHCb and HERA-B (30'+5')

Orateur: Michael SCHMELLING (MPI for Nuclear Physics, Heidelberg, Germany)

Transparents herablhcb.pdf

09:05 First simulations with a LHCb-like forward detector for AFTER (30'+5')

Orateur: Zhenwei YANG (Center for High Energy Physics, Tsinghua University)

Transparents FirstSimulation_LHCb_like_Zhenwei.pdf

09:40 RHIC highlights and prospetcs for Heavy-flavour studies (30'+5')

Orateur: Barbara Trzeciak

Transparents HeavyFlavorRHIC_AFTER2013.pdf

10:15 → 10:45 Coffee break

10:45 → 12:15 Working sessions

10:45 WG1

10:45 WG2

10:45 WG3

12:15 → 17:30 Lunch & afternoon free (until 5:30pm)

17:30 → 19:30 HPH & other applications

19:30 → 20:30 Dinner

jeudi 16 janvier

08:30 → 10:15 Heavy-ion studies with AFTER

Président de session: Dr Elena Ferreiro (Department of Particle Physics, University of Santiago de Compostela, Spain)

08:30 Production of hypernuclei from excited nuclear residues in relativistic ion collisions: New opportunities for AFTER@LHC (30'+5')

Investigation of hypernuclei is a rapidly progressing field of nuclear physics, since they open both opportunities to improve methods of traditional nuclear studies and new horizons for studying particle physics and nuclear astrophysics. Within dynamical and statistical theories we study the main regularities in the production of hypernuclei emerging from the projectile and target residues in relativistic ion collisions. This process will allow to study the mechanisms of peripheral collisions and the properties of hyper-matter of low temperatures, including hyperon-hyperon interactions at low energies. We demonstrate that the yields of hypernuclei increase considerably at beam energies above the energy threshold for Lambda hyperons, followed by a saturation for yields of hypernuclei with increasing the beam energy up to few TeV (LHC energies) [1]. These hypernuclei have a broad distribution in masses and isospin. They can even reach beyond the neutron and proton drip-lines since they are stable with respect to nucleon emission [2]. Weak decay of such hypernuclei may lead to formation of normal nuclei beyond the drip-lines also, thus providing a unique chance for reaching island of stability on the nuclear chart. The production of specific hypernuclei depend strongly on the isotopic composition of the projectile, therefore, it will be possible to obtain exotic hypernuclei that may be difficult to reach in traditional hypernuclear experiments [1]. The perspectives of hypernuclear studies involving these novel processes at the present accelerators are discussed. [1] A.S. Botvina, K.K. Gudima, and J. Pochodzalla, Phys. Rev. C88, 054605 (2013). [2] N. Buyukcizmeci, A.S. Botvina, J. Pochodzalla, and M. Bleicher, Phys. Rev. C88, 014611 (2013).

Orateur: Dr Alexander Botvina (FIAS)

Slides hyper-LHC2014-botvina1.ppt

09:05 Towards ideal detector for fluctuation studies in nucleus-nucleus collisions (30'+5')

Orateur: Marek Gazdzicki (FIAS)

Transparents HICFuture_Fluctuations_v1.odp HICFuture_Fluctuations_v1.pdf

09:40 Upsilon sequential melting with AFTER (30'+5')

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

Slides talk-JPL-LesHouches-170114-AFTERa-splitted.pdf

10:15 → 10:45 Coffee break

10:45 → 12:15 Working sessions

10:45 WG1

10:45 WG2

10:45 WG3

12:15 → 17:30 Lunch & afternoon free (until 5:30pm)

17:30 → 19:30 Prospects: Letter of Intent, Working Groups, ...

19:30 → 21:30 Savoyard dinner

vendredi 17 janvier

08:30 → 10:15 Heavy-ion studies

Président de session: Dr Andry Rakotozafindrabe (CEA Saclay, IRFU/SPhN)

08:30 Low-mass dileptons from SPS to the LHC (30'+5')

Orateur: Antonio Uras (IPNL Lyon)

Transparents Alice_AFTER2014_Uras.pdf

09:05 Charmonium from SPS to the LHC (30'+5')

Orateur: Roberta Arnaldi (INFN Torino)

Transparents Roberta_AFTER2014.pdf

09:40 The CHIC project (30'+5')

Orateur: Dr Frédéric FLEURET (LLR-Ecole polytechnique, CNRS/IN2P3)

Transparents Fleuret-Les-Houches-2014.pdf

10:15 → 10:45 Coffee break

10:45 → 12:15 Working sessions

12:15 → 13:15 Lunch

13:15 → 15:30 Summary of working sessions

Président de session: Dr Stephane Platchkov (CEA Saclay, IRFU/SPhN)

13:15 WG1 summary

13:45 WG2 summary

14:15 WG3 summary

14:45 Discussions

15:15 Adjourn