Low-x 2023

3 Sept 2023, 09:00 → 8 Sept 2023, 23:30 Europe/Rome

Leros island, Greece

The purpose of the Low-x workshop is to stimulate discussions between experimentalists and theorists in diffractive hadronic physics, QCD dynamics at low-x, parton saturation and exciting problems in QCD at HERA, Tevatron, LHC, RHIC and the future EIC.
 

The conference venue will be at the Crithoni's paradise hotel, Leros Island, Greece, from September 4 in the morning to September 8 in the evening Please register as soon as possible since this is still a highly touristic hotel and region. The reservation will be fully inclusive with breakfast, lunch and dinner at the hotel. It is also advised to buy the flight tickets as soon as possible to secure availability and avoid high prices.

Please note that you might receive a mail from ops@travellerpoint.org about the hotel reservation, THIS IS A SPAM AND DO NOT ANSWER THEM!!!!!

The registration fee will be 250 Euros for participants of the workshop, and 120 Euros for companions. The fees cover the conference room, all coffee breaks, the workshop dinner, the transfer from the harbour/airport and back, the welcome drinks as well as a one-day tour.

Low-x is an annual workshop whose spirit is to favour fruitful and informal discussions between experimentalists and theorists in low-x, diffractive hadronic physics and exciting problems in QCD at HERA, Tevatron and LHC. Low-x has been held since DESY (1993), then Saclay (May 1994), Cambridge (July 1995), Durham (June 1996), Madrid (June 1997), Berlin (June 1998), Tel Aviv (June 1999), Oxford (July 2000), Cracow (June 2001), Antwerpen (September 2002), Nafplio (June 2003), Prague (September 2004), Sinaia (June 2005), Lisbon (June 2006), Helsinki (September 2007), Crete (July 2008), Ischia (September 2009), Kavala (June 2010), Santiago de Compostela (June 2011), Cyprus (June 2012), Eilat (June 2013), Kyoto (June 2014), Sandomierz (September 2015), Gyongyos (June 2016), Bisceglie (June 2017), Reggio Calabria (August 2018), Nicosia (August 2019), and Elba (September 2021) 

 

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The Workshop is organized and sponsored by the University of Kansas, the University of Cyprus, ExtreMe Matter Institute at GSI (EMMI) and CERN

 

Sunday 3 September

17:00 → 20:00 Registration

20:00 → 22:00 Dinner

Monday 4 September

09:00 → 09:10 Welcome

Speakers: Christophe Royon (The University of Kansas (US)), Fotios Ptochos (University of Cyprus (CY)), Dr Georgios Krintiras (The University of Kansas (US))

Welcome talk Low-x 2023 Workshop.pdf

09:10 → 10:40 PDFs and QCD fits

09:10 PDFs and QCD fits

Speaker: Amanda Sarkar (University of Oxford (GB))

pdfcomparison_lowx2023.pdf

09:40 CMS jet measurements and constraints on PDFs and alphaS

Speaker: Achim Geiser (Deutsches Elektronen-Synchrotron (DE))

Lowx23jets3.pdf

10:10 Recent Progress in PDF Determination

Speakers: Dr Tanjona R. Rabemananjara (NIKHEF & VU Amsterdam), Tanjona Radonirina Rabemananjara (CERN)

LOWx-LEROS-2023.pdf

10:40 → 11:10 Coffee break

11:10 → 12:40 PDFs and QCD fits

11:10 Beyond LO for hybrid kT-factorization

Speaker: Andreas van Hameren

Low-x-2023-vanHameren.pdf

11:40 Next-to-leading order photon+jet production

Speaker: Yair Mulian

LerosPhotonJet.pdf

12:10 Discussion: PDFs, QCD fits

Speakers: Amanda Sarkar (University of Oxford (GB)), Dr Tanjona R. Rabemananjara (NIKHEF & VU Amsterdam)

12:40 → 14:00 Lunch break

14:00 → 15:00 Soft diffraction

14:00 Recent TOTEM results

Speaker: Christophe Royon (The University of Kansas (US))

lowx2023.pdf

14:30 Lévy α-stable model for the non-exponential low-|t| proton-proton differential cross section

Speakers: Istvan Szanyi (Eötvös University, Wigner RCP, MATE KRC), Mr István Szanyi (Eötvös Loránd University)

szanyi_low-x_2023.pdf

15:00 → 15:30 Coffee break

15:30 → 18:00 Soft diffraction

15:30 Nonresonant central exclusive production of charged hadron pairs in proton-proton collisions at 13 TeV in CMS and TOTEM

Speaker: Ferenc Siklér (Wigner RCP, Budapest (HU))

sikler_cex_low-x-2023.pdf

16:00 Physics potential of a combined data-taking of the LHCf and ATLAS Roman Pot detectors

Speaker: Clara Elisabeth Leitgeb (Deutsches Elektronen-Synchrotron (DE))

LHCfAFPFeasibility_LowX2023_Leitgeb.pdf

16:30 Single and double photon bremsstrahlung in pp to pp at the LHC

Speaker: Antoni Szczurek

17:00 Imaging the odderon from exclusive eta_c production at the EIC

Speaker: Sanjin Benić

benic_lowx23.pdf

17:30 Discussion: soft diffraction

Speakers: Christophe Royon (The University of Kansas (US)), Ferenc Siklér (Wigner RCP, Budapest (HU))

18:00 → 19:00 Beach break

19:00 → 20:00 Reception

20:00 → 22:00 Dinner

Tuesday 5 September

09:00 → 10:30 Low x, BFKL, saturation

09:00 Probing gluon saturation with diffractive jets in photon-nucleus interactions

Speaker: Edmond Iancu (Université Paris-Saclay (FR))

Leros2023-DiffractiveJets.pdf

09:30 Back-to-back dijets at the EIC: small x and Sudakov resummation

Speakers: Tomasz Stebel (CERN), Tomasz Stebel (Institute of Theoretical Physics Jagiellonian University)

Low x 2023 stebel.pdf

10:00 Gluon contributions to DVCS, TCS and DDVCS from low to moderate x

Speaker: Renaud BOUSSARIE (CPHT, CNRS, Ecole polytechnique, IP Paris)

BoussarieLowX2023.pdf

10:30 → 11:00 Coffee break

11:00 → 12:30 Low x, BFKL, saturation

11:00 Measuring forward dijet at the LHC as a probe for saturation using a full impact parameter dependent TMDs

Speaker: Federico Deganutti

FedericoDeganutti-Leros23.pdf

11:30 Incoherent diffractive dijet production in electron DIS off large nuclei

Speaker: Dionysios Triantafyllopoulos (ECT*/FBK)

Triantafyllopoulos.pdf

12:00 Discussion: BFKL, saturation

Speakers: Dionysios Triantafyllopoulos (ECT*/FBK), Edmond Iancu (Université Paris-Saclay (FR)), Renaud BOUSSARIE (CPHT, CNRS, Ecole polytechnique, IP Paris)

12:30 → 14:00 Lunch break

14:00 → 15:00 Diffraction and photon exchanges

14:00 Recent results from PPS

Speaker: Andrea Bellora (Universita e INFN Torino (IT))

Bellora_Lowx_v2.pdf

14:30 Overview of ATLAS forward proton detectors: status, performance and new physics results

Speaker: Adrien Auriol (University of Birmingham (GB))

Lowx2023_overviewAFPrun3_AAuriol.pdf

15:00 → 15:30 Coffee break

15:30 → 17:30 Diffraction and photon exchanges

15:30 Hunting for QCD Instantons at the LHC in the forward proton mode

Speaker: Valery Khoze (University of Durham (GB))

16:00 Diffractive measurements in pp and pA collisions

Speaker: Michael Pitt (The University of Kansas (US))

diffraction_pp_pA_MPitt.pdf

16:30 Search for effective lorentz violation and CPT violation in ZEUS data

Speaker: Amanda Sarkar (University of Oxford (GB))

lorentz.pdf

17:00 Discussion: Hard diffraction and photon exchanges

Speakers: Antoni Szczurek, Leszek Motyka, Michael Pitt (The University of Kansas (US))

17:30 → 19:30 Beach break

19:30 → 21:30 Dinner

Wednesday 6 September

09:00 → 10:30 Low x, BFKL

09:00 Exclusive particle production in heavy ion at CMS

Speaker: Dr Georgios Krintiras (The University of Kansas (US))

Low-x GKK.pdf

09:30 Coherent J/Psi production in Pb Pb collisions in the CMS experiment at the LHC

Speaker: Luis Alcerro Alcerro (The University of Kansas (US))

Lowx2023.pdf

10:00 Gamma gamma to gamma gamma scattering in UPC with ALICE 3 and FoCal

Speaker: Antoni Szczurek

10:30 → 11:00 Coffee break

11:00 → 12:30 Low x, BFKL

11:00 Search for elliptic azimuthal anisotropies in photon-proton and pomeron-Pb interactions using rapidity gaps at pPb collisions with the CMS experiment

Speaker: Javier Alberto Murillo Quijada (Universidad de Sonora (MX))

low_x_2023__slides (2).pdf

11:30 Exclusive vector meson production with Sartre using machine learning in eA collision

Speaker: Jaswant Singh (Indian Institute of Technology New Delhi)

12:00 Discussion: Heavy ions

Speakers: Dr Georgios Krintiras (The University of Kansas (US)), Javier Alberto Murillo Quijada (Universidad de Sonora (MX))

12:30 → 14:00 Lunch break

15:30 → 19:00 Workshop tour

20:00 → 22:00 Workshop Dinner

Thursday 7 September

09:00 → 10:30 Low x, BFKL, Final states

09:00 Measurement and QCD analysis of inclusive jet production in deep inelastic scattering at HERA

Speaker: Achim Geiser (Deutsches Elektronen-Synchrotron (DE))

Lowx23ZEUS3.pdf

09:30 Associated production of vector bosons and heavy flavours in CMS

Speaker: Michael Pitt (The University of Kansas (US))

VHF_Michael_Pitt.pdf

10:00 Mueller-Tang Jets at Next-to-Leading Order and Violation of BFKL Factorization

Speaker: Federico Deganutti

FedericoDeganutti-Leros23-2.pdf

10:30 → 11:00 Coffee break

11:00 → 12:30 Low x, BFKL, Final states

11:00 Measurement of the azimuthal decorrelation angle between the leading jet and the scattered lepton in deep inelastic scattering at HERA

Speaker: Prof. Bernd Surrow (Temple University)

BSurrow-Low-x_Leros_ZEUS.key

BSurrow-Low-x_Leros_ZEUS_NO_Animations.pdf

BSurrow-Low-x_Leros_ZEUS.pdf

11:30 Jet substructure measurements in CMS

Speaker: Christophe Royon (The University of Kansas (US))

lowx2023_cmsjet.pdf

12:00 Discussion: jets

Speakers: Achim Geiser (Deutsches Elektronen-Synchrotron (DE)), Armando Bermudez Martinez (CERN), Jean-Philippe Lansberg (Université Paris-Saclay (FR))

12:30 → 14:00 Lunch break

14:00 → 15:00 Low x, BFKL

14:00 Low x physics at the EIC

Speaker: Prof. Bernd Surrow (Temple University)

BSurrow-Low-x_Leros_ePIC.key

BSurrow-Low-x_Leros_ePIC_NO_Animations.pdf

BSurrow-Low-x_Leros_ePIC.pdf

14:30 Geometric scaling in leading neutron events at HERA

Speaker: Mr Arjun Kumar (Indian Institute of Technology Delhi)

kumar_low_x.pdf

15:00 → 15:30 Coffee break

15:30 → 17:00 Low x, BFKL, Final states

15:30 The LHC as a Neutrino-Ion Collider: FPF case studies

Speakers: Dr Tanjona R. Rabemananjara (NIKHEF & VU Amsterdam), Tanjona Radonirina Rabemananjara (CERN)

FPF-LOWx-LEROS-2023.pdf

16:00 Factorisation of 1-loop amplitudes in NMRK limits

Speaker: Emmet Byrne

Low-x_23_Emmet.pdf

16:30 Discussion: low x, saturation, final states

Speaker: Renaud BOUSSARIE (CPHT, CNRS, Ecole polytechnique, IP Paris)

17:00 → 19:30 Beach break

19:30 → 21:30 Dinner

Friday 8 September

09:00 → 10:30 Low x, BFKL, Final states

09:00 QCD corrections to quarkonium production

Speakers: Jean-Philippe Lansberg (Ecole Polytechnique), Jean-Philippe Lansberg (Ecole polytechnique), Jean-Philippe Lansberg (Université Paris-Saclay (FR))

Low-x-080923.pdf

09:30 Computing one-loop corrections to quarkonium production impact-factors with Lipatov's EFT

Speaker: Dr Maxim Nefedov (IJClab, Orsay)

Nefedov_Small-x.pdf

10:00 On color reconnection effects in J/psi hadroproduction

Speaker: Leszek Motyka

jpsitalk_lowx23.pdf

10:30 → 11:00 Coffee break

11:00 → 12:30 Final states, quarkonium

11:00 New results constraining transversity in high-energy polarized p+p collisions

Speaker: Prof. Bernd Surrow (Temple University)

BSurrow-Low-x_Leros_IFF.key

BSurrow-Low-x_Leros_IFF.pdf

11:30 Recent results on direct determination of the Collins-Soper kernel and how to measure it at the LHC?

Speaker: Armando Bermudez Martinez (CERN)

Lowx2023_Armando.pdf

12:00 Discussion: final states, quarkonium

Speakers: Achim Geiser (Deutsches Elektronen-Synchrotron (DE)), Armando Bermudez Martinez (CERN), Jean-Philippe Lansberg (Université Paris-Saclay (FR))

Lowx2023_Discussion.pdf

12:30 → 14:00 Lunch break

14:00 → 15:00 Low x, BFKL, Final states

14:00 Dilepton and diphoton production and BSM searches with UPC photon fusion processes in Pb+Pb collisions with the ATLAS detector

Speaker: Melike Akbiyik (Johannes Gutenberg Universitaet Mainz (DE))

DiffractionandLow_x _greece_MelikeAkbiyik.key

DiffractionandLow_x _sep8_greece_MELIKE.pdf

14:30 Transverse analyzing power measurement in the high energy forward pp and pA scattering at RHIC hydrogen jet target polarimeter

Speaker: Andrei Poblaguev (Brookhaven National Laboratory)

Low-x_23_Poblaguev.pdf

15:00 → 15:30 Coffee break

15:30 → 17:30 Low x, BFKL, Final states

15:30 The LHCspin project

Speaker: Marco Santimaria (INFN e Laboratori Nazionali di Frascati (IT))

santimaria_lowx_sept2023.pdf

16:00 On the exact solution for the Schrödinger equation

Speaker: Yair Mulian

Schrodinger_leros.pdf

16:30 V+jets production in CMS

Speakers: Sorina Popescu (F), Sorina Popescu (The University of Kansas (US))

SPLowXLeros2023.pdf

SPLowXLeros2023.pptx

17:00 Discussion: final states

Speakers: Achim Geiser (Deutsches Elektronen-Synchrotron (DE)), Armando Bermudez Martinez (CERN), Jean-Philippe Lansberg (Université Paris-Saclay (FR))

17:30 → 17:45 Workshop conclusion

Speakers: Christophe Royon (The University of Kansas (US)), Fotios Ptochos (University of Cyprus (CY)), Dr Georgios Krintiras (The University of Kansas (US))

17:45 → 19:30 Beach break

19:30 → 21:30 Dinner