V. Abazov

Joint Institute for Nuclear Research

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P. Achenbach

Thomas Jefferson National Accelerator Facility

B. Cederwall

KTH Royal Institute of Technology

Ajay Kumar

Sardar Vallabhbhai National Institute of Technology Surat

R. Kliemt

GSI Helmholtz Centre for Heavy Ion Research

V. Rigato

Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro

M. Thiel

Johannes Gutenberg University Mainz

K. Korcyl

Institute of Nuclear Physics, Polish Academy of Sciences

E. Luschevskaya

Institute for Theoretical and Experimental Physics

T. Fiutowski

AGH University of Krakow

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А. В. Канцырев

Kurchatov Institute

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Joint Institute for Nuclear Research

223

European Organization for Nuclear Research

163

Kurchatov Institute

136

GSI Helmholtz Centre for Heavy Ion Research

118

A. Alikhanyan National Laboratory

117

Ruhr University Bochum

Johannes Gutenberg University Mainz

Institute of High Energy Physics

University of Giessen

Forschungszentrum Jülich

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Study of Excited $\Xi$ Baryons with the PANDA Detector

HAL (Le Centre pour la Communication Scientifique Directe) (2021)

G. Barucca F. Davi G. Lancioni P. Mengucci L. Montalto

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Study of excited $$\varvec{\varXi }$$ baryons with the $$\overline{\text{ P }}$$ANDA detector

The European Physical Journal A (2021)

G. Barucca Fabrizio Davı́Giovanni Lancioni P. Mengucci Luigi Montalto

The study of baryon excitation spectra provides insight into the inner structure of baryons. So far, most of the world-wide efforts have been directed towards $N^*$ and $\Delta$ spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the $N^*$ and $\Delta$ spectra. The future antiproton experiment PANDA will provide direct access to final states containing a $\bar{\Xi}\Xi$ pair, for which production cross sections up to $\mu$b are expected in $\bar{p}p$ reactions. With a luminosity of $L=10^{31}\,cm^{-2}s^{-1}$ in the first phase of the experiment, the expected cross sections correspond to a production rate of $\sim 10^6$ events$/$day. With a nearly $4\pi$ detector acceptance, PANDA will thus be a hyperon factory. In this study, reactions of the type $\bar{p}p\rightarrow \bar{\Xi}^+ \Xi^{*-}$ as well as $\bar{p}p\rightarrow \bar{\Xi}^{*+} \Xi^{-}$ with various decay modes are investigated. For the exclusive reconstruction of the signal events a full decay tree fit is used, resulting in reconstruction efficiencies between $3\,\%$ and $5\,\%$. This allows high statistics data to be collected within a few weeks of data taking.

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10.1140/epja/s10050-021-00444-5

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Feasibility study for the measurement of πN transition distribution amplitudes at P¯<…

Physical review. D/Physical review. D. (2017)

B. P. Singh W. Erni B. Krusche M. Steinacher N. K. Walford

The exclusive charmonium production process in $\overline{p}p$ annihilation with an associated ${\ensuremath{\pi}}^{0}$ meson $\overline{p}p\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{0}$ is studied in the framework of QCD collinear factorization. The feasibility of measuring this reaction through the $J/\ensuremath{\psi}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}$ decay channel with the AntiProton ANnihilation at DArmstadt ($\overline{\mathsf{P}}\mathsf{ANDA}$) experiment is investigated. Simulations on signal reconstruction efficiency as well as the background rejection from various sources including the $\overline{p}p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ and $\overline{p}p\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ reactions are performed with PandaRoot, the simulation and analysis software framework of the $\overline{\mathsf{P}}\mathsf{ANDA}$ experiment. It is shown that the measurement can be done at $\overline{\mathsf{P}}\mathsf{ANDA}$ with significant constraining power under the assumption of an integrated luminosity attainable in four to five months of data taking at the maximum design luminosity.

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Antiproton

10.1103/physrevd.95.032003

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Technical Design Report of the Spin Physics Detector at NICA

arXiv (Cornell University) (2024)

The SPD Collaboration V. Abazov V. Abramov L. Afanasyev R. Akhunzyanov

The Spin Physics Detector collaboration proposes to install a universal detector in the second interaction point of the NICA collider under construction (JINR, Dubna) to study the spin structure of the proton and deuteron and other spin-related phenomena using a unique possibility to operate with polarized proton and deuteron beams at a collision energy up to 27 GeV and a luminosity up to $10^{32}$ cm$^{-2}$ s$^{-1}$. As the main goal, the experiment aims to provide access to the gluon TMD PDFs in the proton and deuteron, as well as the gluon transversity distribution and tensor PDFs in the deuteron, via the measurement of specific single and double spin asymmetries using different complementary probes such as charmonia, open charm, and prompt photon production processes. Other polarized and unpolarized physics is possible, especially at the first stage of NICA operation with reduced luminosity and collision energy of the proton and ion beams. This document is dedicated exclusively to technical issues of the SPD setup construction.

Interaction point

Proton spin crisis

10.48550/arxiv.2404.08317

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Feasibility studies for the measurement of time-like proton electromagnetic form factors from $$\bar{p}p \rightarrow \mu ^+\mu ^-$$ at $$\overline{\text {P}}\text {ANDA}$$ at FAIR

The European Physical Journal A (2021)

G. Barucca Fabrizio Davı́Giovanni Lancioni P. Mengucci Luigi Montalto

Abstract This paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, $$|G_{E}|$$ | G E | and $$|G_{M}|$$ | G M | , using the $$\bar{p} p \rightarrow \mu ^{+} \mu ^{-}$$ p ¯ p → μ + μ - reaction at $$\overline{\text {P}}\text {ANDA}$$ P ¯ ANDA (FAIR). The electromagnetic form factors are fundamental quantities parameterizing the electric and magnetic structure of hadrons. This work estimates the statistical and total accuracy with which the form factors can be measured at $$\overline{\text {P}}\text {ANDA}$$ P ¯ ANDA , using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is $$\bar{p} p \rightarrow \pi ^{+} \pi ^{-}$$ p ¯ p → π + π - , due to the very similar behavior of muons and pions in the detector. The suppression factors are evaluated for this and all other relevant background channels at different values of antiproton beam momentum. The signal/background separation is based on a multivariate analysis, using the Boosted Decision Trees method. An expected background subtraction is included in this study, based on realistic angular distributions of the background contribution. Systematic uncertainties are considered and the relative total uncertainties of the form factor measurements are presented.

10.1140/epja/s10050-020-00333-3

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Citations (20)