WPCF 2023 - XVI Workshop on Particle Correlations and Femtoscopy & IV Resonance Workshop 2023

Session

Day 2 - Morning

7 Nov 2023, 09:00

Conveners

Day 2 - Morning: Session 5 - Special Session on Stellar Intensity Interferometry

• Giuseppe Verde (Istituto Nazionale di Fisica Nucleare)

Day 2 - Morning: Session 6

• Tamas Csorgo (Wigner RCP Budapest and MATE IoT KRC, Gyongyos, Hungary)

97. Introduction to Stella Intensity Interferometry

Michael Lisa (Ohio State University)

07/11/2023, 09:00

85. An Angular Diameter Measurement of Merak via Stellar Intensity Interferometry with VERITAS

Michael Lisa (Ohio State University)

07/11/2023, 09:05

Invited

The age of the Ursa Major moving group has been assessed from the ages of its members, including nuclear member Merak (β UMa), an A1-type subgiant, by comparing effective temperature and luminosity constraints to model stellar evolution tracks. Previous interferometric limb-darkened angular diameter measurements of β UMa inthe near-infrared (CHARA Array, 1.149 ± 0.014 mas) and mid-infrared...

78. Stellar Intensity Interferometry at H.E.S.S.

Naomi Vogel

07/11/2023, 09:30

Invited

Stellar Intensity Interferometry (SII), originally developed by Hanbury Brown & Twiss in the late 1950s, enables high angular resolution astronomical observations in the optical band. By measuring and correlating the photon streams of at least two telescopes with varying baselines, the technique becomes almost insensitive to atmospheric effects. Since Imaging Atmospheric Cherenkov Telescopes...

79. Intensity interferometry with optical telescopes: recent progress and future plans

William Guerin (Université Côte d'Azur)

07/11/2023, 09:55

Invited

I will present the current status of the work done by our "Intensity Interferometry at Calern" (I2C) consortium in Nice (France) on the revival of intensity interferometry with optical telescopes.
In short, we have demonstrated intensity correlations using stellar light for the first time in the photon-counting regime, using 1m-class telescopes at Calern Observatory. We have then dedicated...

81. Astronomical HBT interferometry: inside-out femtoscopy?

Prasenjit Saha (University of Zurich)

07/11/2023, 10:20

Invited

Astronomical HBT interferometry is simultaneously just like femtoscopy and yet as different as can be. Perhaps one can think of astronomical HBT interferometry (or intensity interferometry) as probing (transverse) momentum on scales of nano eV/c by measuring particle correlations on scales of hundreds of metres.

This talk will try to make the connection, present some new results on massive...

86. Search for collective behavior in very small and in large colliding systems

Prof. Sandra Padula (Sao Paulo State University (UNESP))

07/11/2023, 11:15

Invited

Signs of collectivity were initially seen in AuAu collisions at RHIC through measurements of two-particle long-range correlations in (pseudorapidity) Δη, within small (azimuthal) Δφ angles. In addition, in 2010 a similar ridge-like behavior was observed in high multiplicity proton-proton (pp) collisions at 7 TeV at the LHC by CMS, extended afterwards also to pPb and PbPb collisions. Several...

27. Femtoscopy of p − Λ system obtained in heavy-ion collision in the HADES experiment

Narendra Rathod (Warsaw University of Technology, Warsaw, Poland)

07/11/2023, 11:40

Invited

Over recent decades, substantial attention has been directed toward the characteristics of hyperons in dense matter, particularly in the context of stars. Energetically, hyperons might exist in the inner layers of neutron stars, where the structural arrangement is notably influenced by the equation of state (EOS) describing nuclear matter at densities exceeding saturation. The inclusion of...

47. Forward correlations with the LHCb detector

Samuel Belin (Universidade de Santiago de Compostela (ES) IGFAE - LHCb)

07/11/2023, 12:05

Invited

Particle correlations are a powerful tool to study the properties of the bulk nu-
clear matter produced in relativistic heavy ion collisions. The momentum cor-
relations between identical particles originating from the same particle-emitting
source, referred to as the Bose-Einstein correlations, measure scales that are
related to the geometrical size of the source. The two-particle...

9. Forward-backward correlations with the Σ quantity in the wounded-constituent framework at energies available at the CERN LHC

Iwona Sputowska

07/11/2023, 12:30

Invited

Σ is a new correlation measure, quite recently introduced to heavy-ion physics. This measure, defined in the independent source model as a strongly intensive quantity, is expected to be free of the effects of system volume and volume fluctuations. In this talk, the forward-backward (FB) correlation quantified with the Σ observable calculated in the framework of the wounded nucleon model (WNM)...

5. Probing particle production and transport in small collision systems with ALICE

Lucia Anna Tarasovicova (PJ Safarik University (SK))

07/11/2023, 12:55

Contributed

Many recent measurements in small collision systems such as pp and p–-Pb collisions show signs of collective behavior of produced particles. The two-particle number and transverse momentum (differential) correlators and charged-particle balance function measurements in Pb--Pb collisions provided valuable information about the particle production mechanisms and their time evolution as well as...