Strangeness in Hard Processes 2025

Europe/Rome
Aula Salvini (Laboratori Nazionali di Frascati)

Aula Salvini

Laboratori Nazionali di Frascati

Via E. Fermi 54 00054 Frascati (RM)
Bakur Parsamyan (AANL, Turin section of INFN and CERN), Harut Avakian (Jefferson lab), Marco Mirazita, Patrizia Rossi (Jefferson Lab)
Description

The five day long International Workshop on "Strangeness in Hard Processes 2025" will be held in Frascati, Italy, from 15 to 19 December 2025.

The Strangeness in Hard Processes 2025 workshop, scheduled for December 15-19, 2025, brings together leading theorists and experimentalists to explore the multifaceted role of strangeness, embodied in kaons and other strange hadrons, in hard QCD processes.  Participation is by invitation only.

This workshop is the second in the series, following the successful  PSHP 2010 workshop at LNF, and aims to build on that foundation by addressing the latest developments in theory, phenomenology, and experiment. At the crossroads of high-precision measurements and cutting-edge theoretical frameworks, the 2025 edition will deepen our understanding of kaon production and fragmentation mechanisms within both inclusive and exclusive reactions. Key themes include insights into kaon parton distribution functions (PDFs), transverse momentum-dependent distributions (TMDs), hadronization dynamics, CP-violating observables, and rare decay channels.

One of the central focuses of the workshop will be the crucial experimental role of kaon identification, which is fundamental to advancing studies of strangeness at many facilities. Ring Imaging Cherenkov (RICH) detectors are central to this capability. The program will review the performance and challenges of RICH technologies at CERN experiments (COMPASS, AMBER, LHCb), at Jefferson Lab (CLAS12), and at other facilities, highlighting their complementary contributions to kaon physics. Particular emphasis will be placed on the CLAS12 RICH, whose performance has already shown strong potential for precision kaon measurements. At the same time, important steps remain to fully exploit its capabilities, requiring continued optimization and dedicated analysis efforts. This broader perspective will enable participants to assess both current achievements and the future potential of strangeness measurements made possible by state-of-the-art particle identification systems.

Participants will exchange recent experimental results, theoretical developments, and phenomenological interpretations, as well as identify outstanding challenges and future directions. This workshop serves as a prime opportunity to advance our knowledge of strangeness in high-energy QCD and strengthen the physics case for upcoming facilities and experiments.

The scientific programme of the workshop will be focused on the following topics:

  • Kaon Production Mechanisms

  • Kaon Structure & Distribution Functions

  • Transverse Momentum Distributions (TMDs)

  • Hadronization & Fragmentation Dynamics

  • Theoretical Approaches & Models

  • Experimental Facilities & Techniques

  • Phenomenology & Data-Theory Interface


Workshop Organizers:

H. Avagyan, M. Mirazita, B. Parsamyan, P. Rossi
Our sponsors and partners:

      

Participants
    • 3:30 PM
      Registration Building 36, Atrium (Laboratori Nazionali di Frascti)

      Building 36, Atrium

      Laboratori Nazionali di Frascti

      Via Enrico Fermi 54 (già 40) - 00044 Frascati (Roma) Italy
    • 7:30 PM
      Welcome party
    • 10:30 AM
      Registration Building 36, Atrium

      Building 36, Atrium

      Laboratori Nazionali di Frascati

      Via Enrico Fermi 54 (già 40) - 00044 Frascati (Roma) Italy
    • Session 1a Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Patrizia Rossi (Jefferson Lab)
    • 1:30 PM
      Lunch Canteen

      Canteen

      Laboratori Nazionali di Frascati

    • Session 1b Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Harut Avakian (Jefferson Lab)
      • 5
        Pion and Kaon production at COMPASS
        Speakers: Prof. Andrea Bressan (Universita e INFN Trieste (IT)), Andrea Bressan
      • 6
        Pion and kaon SIDIS at CLAS
        Speaker: Dr Stefan Diehl (Justus Liebig University Giessen and University of Connecticut)
      • 7
        Kaon SIDIS on proton and deuteron with CLAS12
        Speaker: Simone Vallarino (INFN e Universita Genova (IT))
      • 8
        Kaon SIDIS on longitudinal polarized proton and deuteron with CLAS12
        Speaker: Lorenzo Polizzi (Universita e INFN, Ferrara (IT))
    • 4:10 PM
      Coffee Break Building 36, Atrium

      Building 36, Atrium

      Laboratori Nazionali di Frascati

    • Session 1b Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Harut Avakian (Jefferson Lab)
    • Session 2a Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Prof. Andrea Bressan (Universita e INFN Trieste (IT))
    • 1:30 PM
      Lunch Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
    • Session 2b Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Patrizia Rossi (Jefferson Lab)
    • 4:00 PM
      Coffee Break Building 36, Atrium

      Building 36, Atrium

      Laboratori Nazionali di Frascati

    • Session 2b Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Patrizia Rossi (Jefferson Lab)
    • 7:30 PM
      Social dinner
    • Session 3a Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Patrizia Rossi (Jefferson Lab)
    • 1:30 PM
      Lunch Laboratori Nazionali di FrascatiCanteen

      Laboratori Nazionali di FrascatiCanteen

    • Session 3b Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Dr Bakur Parsamyan (AANL, Turin section of INFN and CERN)
    • 4:00 PM
      coffee break Building 36, Atrium

      Building 36, Atrium

      Laboratori Nazionali di Frascati

    • Session 3b Aula Salvini

      Aula Salvini

      Laboratori Nazionali di Frascati

      Via E. Fermi 54 00054 Frascati (RM)
      Convener: Dr Bakur Parsamyan (AANL, Turin section of INFN and CERN)
      • 25
        The CLAS12 RICH detector
        Speakers: Marco Contalbrigo (Universita e INFN, Ferrara (IT)), Marco Contalbrigo (Dipartimento di Fisica)
      • 26
        ML techniques for the alignment of the CLAS12 RICH
        Speaker: Connor Pecar
      • 27
        ML techiques for PID with the CLAS12 RICH
        Speaker: Ryan Milton