Workshop at 1GeV scale: From mesons to axions

19 Sept 2024, 08:00 → 20 Sept 2024, 18:00 Europe/Warsaw

A-1-13 (Faculty of Physics, Astronomy and Computer Science, Jagiellonian Univeristy)

Izabela Ciepał (Institute of Nuclear Physics PAS) , Marcin Zieliński

The workshop is organised by the Jagiellonian University in Kraków and Niewodniczański Institute of Physic Polish Academy of Science, and will take place in the building of Faculty of Physics, Astronomy and Computer Science of the Jagiellonian University from 19th till 20th of September this year. 

The organised workshop is affiliated with MESON Conference. 

       
This workshop will be focused on fundamental problems related to physics of  mesons, exotic particles like axions, dark photons, beyond the Standard Model. The aim of the workshop is to bring together the experts from theory and experiments to facilitate knowledge exchange and promote collaboration at the forefront of experimental and theoretical developments. 

Organizers:

 

 

Workshop is affiliated with:

Supported by:

 

       

 

Organised in framework of projects funded by:

PosterW1G.pdf

Thursday, 19 September

08:30 Morning Coffee

Plenary Session 1: Convener: Susan Schadmand (GSI Darmstadt)

1 Opening and Welcome Session by Prof. Zbigniew Postawa - Dean of Faculty of Physics, Astronomy and Computer Science Jagiellonian University and Prof. dr hab. Bogdan Fornal - Deputy Director of Niewodniczański Nuclear Physics Institute PAN

Opening and Welcome Session by Prof. Zbigniew Postawa - Dean of Faculty of Physics, Astronomy and Computer Science Jagiellonian University and Prof. dr hab. Bogdan Fornal - Deputy Director of Niewodniczański Nuclear Physics Institute PAN

2 History of X17 particle

Speaker: Michał Ciemała (IFJ PAN)

History_of_X17_Ciemala.pdf

History_of_X17_Ciemala.pptx.odp

3 Probing light dark particles with η and η' decays

Hadronic and radiative decays of light meson decays offer a privileged environment to test QCD and search for physics beyond the Standard Model. A new generation of precision experiments in hadron physics will soon offer new data that will provide sensitive probes to test potential New Physics including searches for dark photons, light scalars and axion-like particles, complementing worldwide efforts to detect new light particles in the MeV-GeV mass range.
In this talk, I will give an update on the theoretical developments and discuss the experimental opportunities in this field, paying particular attention to the sensitivity of the η and η' mesons to dark bosons and ALPs.

Speaker: Sergi Gonzalez-Solis (University of Barcelona)

KrakowTalk_Sergi.pdf

4 An update of the X17 particle

Speaker: Attila Krasznahorkay (Institute for Nuclear Research (ATOMKI))

Krasznahorkay-X17.pdf

11:00 Coffee Break

Plenary Session 2: Convener: Susan Schadmand (GSI Darmstadt)

5 X17 axion search at Laboratori Nazionali di Legnaro

Speaker: Tommaso Marchi (INFN - LNL)

20240919_MESONS1GeV_X17_TM.pdf

6 New light particle searches with PADME

Speaker: Kalina Dimitrova (Faculty of Physics, Sofia University "St. Kliment Ohridski")

PADME_MESON_KDimitrova.pdf

12:30 Lunch break

13:55 Conference Photo

Plenary session 3: Convener: Sergi Gonzalez-Solis (University of Barcelona)

7 Search for X17 in the η->e+e-π+π- decay at pp@4.5 GeV​ with HADES

Speaker: Krzysztof Prościński (Jagiellonian University)

Krzysztof Proscinski - workshop at 1 GeV v3.pdf

8 Search for Hidden Sector New Particles in the 3-60 MeV Mass Range: Focusing on the Hypothetical X17 Particle

TBD

Speaker: William Briscoe (GWU)

Abstract_Gasparian_Krakow_Sept_2024.pdf

Gasparian_Krakow_2024.pdf

Gasparian_Krakow_2024.pptx

9 Storage ring as an ALP antenna - an experimental proof of principle

Axions, or axionlike particles (ALPs), can couple to the spin of nucleons and nuclei, either directly through the axion-wind effect, or indirectly, inducing an oscillating electric dipole moment in nucleons in the process. If ALPs are a part of the cold dark matter in our Galaxy, they can be treated as a classical field. A beam of in-plane polarized hadrons circulating in a storage ring can therefore be used as an ALP antenna. At the resonance between the frequency of an ALP field and the spin-precession frequency of the beam, a buildup of the vertical polarization component should appear as a signal of the ALP presence. As the ALP mass and frequency are unknown, the beam momentum, which is directly related to its spin-precession frequency, needs to be ramped in a search for the resonance crossing. The JEDI collaboration conducted a proof-of-principle experiment demonstrating this new method using the polarized deuteron beam of the COSY synchrotron. An ALP mass range of $0.495-0.502\ \mathrm{neV/c}^2$ was scanned. No ALP signal was observed, but a 90% confidence upper limit on the deuteron oscillating electric dipole moment of $6.4\times10^{-23}\ $e$\cdot$cm was obtained. The experimental method was successfully tested through injection into the ring of a fake ALP signal generated using a radio-frequency Wien filter. In my talk, I will discuss the method, necessary preparatory work and developments, the experiment and its subtleties, and the results.

Speaker: Aleksandra Wrońska (Jagiellonian University)

Wronska_1GeVworkshop2024_axions_public.pdf

15:30 Coffee break

Plenary session 4: Convener: Aleksandra Wrońska (Jagiellonian University)

10 Search for Dark Photons by the HPS experiment at Jefferson Lab

Our present understanding of the properties of Dark Matter (DM), whose existence was confirmed decades ago through its gravitational interactions with ordinary matter, remain limited. A major scientific quest is to uncover its nature, origin, composition, and interactions beyond gravity.
Despite extensive efforts to identify viable Weakly Interacting Massive Particle (WIMP) candidates, no positive results have been achieved so far.
Recently, new hypotheses have emerged about the nature of Dark Matter. For instance, models for light (sub-GeV) DM suggest that its constituents belong to a Hidden Sector, that is uncharged under the Standard Model (SM) forces and interacts with the SM through a new force carrier. Specifically, well-supported theoretical models propose the existence of a new U(1) light gauge boson, known as the heavy (or dark) photon A', which kinetically mixes with the SM photon.
The Heavy Photon Search (HPS) experiment at the Thomas Jefferson National Accelerator Facility (JLAB, USA) was primarily designed to search for heavy photons produced through electron interactions on a thin Tungsten target, that decay into electron-positron pairs.
This presentation will describe the design and performance of the HPS detector and outline the results of the analyses, based both on bump hunt and displaced vertices searches, from the data collected during the 2016 engineering run.
Additionally, the current status of the ongoing analysis of two larger datasets from 2019 and 2021 will be discussed, along with an estimated reach for these new data.

Speaker: Alessandra Filippi (INFN Torino)

cracow24 _w1GeV_filippi.pdf

11 Searching for WIMP and axion dark matter with DEAP-3600

Speaker: Marcin Kuźniak (Astrocent, Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences)

deap_mkuzniak.pdf

12 Searches for cold dark matter particles in the DarkSide experiment

Speaker: Grzegorz Zuzel (Jagiellonian University)

Zuzel_DS_Mesons_Axions.pdf

13 Beyond Standard Model Physics in HIBEAM/NNBAR Experiment

Speaker: Adam Kozela (Institute of Nuclear Physics PAS)

NNbarHIBEAM_BSF_2024_Kozela.pdf

20:00 Conference dinner at "Gościnna Chata" (street: Sławkowska 10, 31-014 Kraków)

Google maps link: https://maps.app.goo.gl/wWi7xqzAkKDB3wFd6

Friday, 20 September

08:30 Morning coffee

Plenary session 5: Convener: Johan Messchendorp (GSI Helmholtzzentrum für Schwerionenforschung GmbH)

14 High precision calculation of the hadronic vacuum polarisation contribution to the muon anomaly

We present a new lattice QCD calculation of the leading order hadronic vacuum polarization contribution to the muon anomalous magnetic moment $a_\mu$ with a $40\%$ reduction of the uncertainties. The short and intermediate distance window contributions are computed on 28 ensembles with 6 different lattice spacings, while the (small) long distance contributions are obtained using input from experiments in a low-energy regime where they all agree. Combined with other standard model contributions our result leads to a prediction that differs from the measurement of $a_\mu$​ by only $0.9$ standard deviations. This provides a remarkable validation of the standard model to $0.37$ppm.

Speaker: Fabian Justus Frech (Bergische Universität Wuppertal)

Talk_muon.pdf

15 The GLUEX JLab Eta Factory (JEF) Experiment at JLAB Hall D

The new JLab Eta Factory (JEF) in Hall D at Jefferson Lab will extend the scientific potential of the GlueX detector beyond its original program to perform precision measurements of various eta(′) decays with emphasis on rare neutral modes. The scientific program spans from precision tests of low-energy QCD to the search for gauge bosons in the mass range below 1 GeV, coupling the SM sector to the dark sector. Photoproduction of energetic eta(′) mesons using a tagged photon beam and detection of recoil protons and multi-photon final states suppresses background and produces a high-statistics data sample of eta mesons. An overview of the JEF project will be presented

Speaker: William Briscoe (GWU)

JLab-eta-experiments-Krakow.pdf

JLab-eta-experiments-Krakow.pptx

16 Recent results from the GlueX collaboration

Speaker: Yannick Wunderlich (University of Bonn)

Talk_Krakow_2024_rev3.pdf

10:30 Coffee break

Plenary session 6: Convener: William Briscoe (GWU)

17 What and how can a theorist check in the face of an experiment? Some important and interesting examples.

Speaker: Robert Kaminski (Institute of Nuclear Physics PAS)

18 Anomalous interactions for mesons with J=1,2 and glueballs

We consider the anomalous interactions for mesons with higher spin, the heterochiral nonets with $J^{P C} = 1^{+ -}$ and $2^{- +}$.
Based on the recent results of Ref. Phys.Rev.D 109 (2024) 7, L071502, under the approximation of a dilute gas of instantons the mixing angle between non-strange and strange mesons decreases strongly as $J$ increases, and oscillates in sign. Anomalous interactions also open up new, rare decay channels. For glueballs, anomalous interactions indicate that the $X(2600)$ state is primarily gluonic.

Speaker: Francesco Giacosa (Jan Kochanowski University of Kielce)

Giacosa_FromMesonto Axions_2024.pdf

19 Light mesons and axions at BESIII

Speaker: Andrzej Kupsc (Uppsala University)

KupscBES2409Krakow.pdf

12:30 Lunch break

Plenary session 7: Convener: Piotr Salabura (Jagiellonian University)

20 Gluons and the η'

Speaker: Steven Bass (Kitzbühel Centre for Physics)

21 The REDTOP experiment: a η/η' factory to explore dark matter and physics beyond the Standard Model

Speaker: Marcin Zieliński (Jagiellonian University)

W1G-Redtop-20.09-MarcinZIelinski_v2.pdf

22 Comprehensive review of hadron polarization studies in (Ultra)relativistic collisions across various experiments

Speaker: Suman Deb (IJCLab - Laboratoire De Physique Des 2 Infinite Irène Joliot-Curie,)

kracow_20_sept_2024.pdf

23 Exclusive analysis of the pp -> ppKK reaction with HADES detector

In this study, we present an exclusive analysis of the \textit{pp} $\to$ \textit{ppKK} reaction with data collected by the HADES detector during February 2022. In the course of this analysis, we developed a neural network-based particle identification procedure (PID), which compensates for the differences between simulation and experiment via a domain adversarial technique. We efficiently suppress background by means of kinematic refit with a 4C constraint, corresponding to the conservation of 4-momentum.

We observed clear signals from $\phi(1020) \to KK$ and $\Lambda(1520) \to pK$ with their parameters consistent with PDG data within one standard deviation. However, the formation of $p\phi$ intermediate state doesn't seem to happen. This talk will present the details of our event selection procedures, efficiency corrections and prospects for further understanding of the reaction mechanism

Speaker: Valentin Kladov (Ruhr-Universität Bochum)

kladov analysis 20.09 (1).pdf

15:30 Coffee break

Plenary session 8: Convener: Andrzej Kupść (Uppsala University)

24 Exclusive production of eta meson in proton-proton collisions at FAIR energies

Speaker: Piotr Lebiedowicz (IFJ PAN, Cracow)

Lebiedowicz_Workshop_1GeVScale_2024.pdf

25 Exclusive production of η and ω in pp@4.5 GeV with HADES

Speaker: Szymon Trelinski (AGH University of Science and Technology)

Workshop-5.pdf

26 Inclusive production of η and ω in pp@4.5 GeV with HADES

Speaker: Mr Adam Strach (Jagiellonian University)

Inc Eta Omega Prod.pdf

27 Closing session