N. Minaev

Institute for High Energy Physics

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Co-Authors

P. Achenbach

Thomas Jefferson National Accelerator Facility

B. Cederwall

KTH Royal Institute of Technology

R. Kliemt

GSI Helmholtz Centre for Heavy Ion Research

V. Rigato

Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro

W. Lauth

Johannes Gutenberg University Mainz

M. Thiel

Johannes Gutenberg University Mainz

K. Korcyl

Institute of Nuclear Physics, Polish Academy of Sciences

T. Fiutowski

AGH University of Krakow

P. Kulessa

Institute of Nuclear Physics

H. Flemming

GSI Helmholtz Centre for Heavy Ion Research

Cooperative Institutions

Joint Institute for Nuclear Research

164

GSI Helmholtz Centre for Heavy Ion Research

160

University of Giessen

146

Johannes Gutenberg University Mainz

142

Kurchatov Institute

133

Institute of High Energy Physics

127

Forschungszentrum Jülich

123

Ruhr University Bochum

118

European Organization for Nuclear Research

111

A. Alikhanyan National Laboratory

101

Author Statistics

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Feasibility studies of time-like proton electromagnetic form factors at $\overline{\rm P}$ P ¯ ANDA at FAIR

The European Physical Journal A (2016)

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

Simulation results for future measurements of electromagnetic proton form factors at $\overline{\rm P}$ ANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision with which the proton form factors can be determined is estimated. The signal channel $\bar{p}p\rightarrow e^{+}e^{-}$ is studied on the basis of two different but consistent procedures. The suppression of the main background channel, i.e. $\bar{p}p\rightarrow \pi^{+}\pi^{-}$ , is studied. Furthermore, the background versus signal efficiency, statistical and systematical uncertainties on the extracted proton form factors are evaluated using two different procedures. The results are consistent with those of a previous simulation study using an older, simplified framework. However, a slightly better precision is achieved in the PandaRoot study in a large range of momentum transfer, assuming the nominal beam conditions and detector performance.

Bar (unit)

Statistical error

Momentum transfer

SIGNAL (programming language)

Momentum (technical analysis)

10.1140/epja/i2016-16325-5

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Citations (33)

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.

Bar (unit)

10.1140/epja/s10050-021-00444-5

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Citations (6)

Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR

arXiv (Cornell University) (2016)

PANDA Collaboration B. K. Singh W. Erni B. Krusche M. Steinacher

Simulation results for future measurements of electromagnetic proton form factors at \PANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision with which the proton form factors can be determined is estimated. The signal channel $\bar p p \to e^+ e^-$ is studied on the basis of two different but consistent procedures. The suppression of the main background channel, $\textit{i.e.}$ $\bar p p \to π^+ π^-$, is studied. Furthermore, the background versus signal efficiency, statistical and systematical uncertainties on the extracted proton form factors are evaluated using two different procedures. The results are consistent with those of a previous simulation study using an older, simplified framework. However, a slightly better precision is achieved in the PandaRoot study in a large range of momentum transfer, assuming the nominal beam conditions and detector performance.

Bar (unit)

SIGNAL (programming language)

Momentum (technical analysis)

Momentum transfer

Basis (linear algebra)

10.48550/arxiv.1606.01118

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Citations (4)

Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR

arXiv (Cornell University) (2014)

PANDA Collaboration B. P. Singh W. Erni I. Keshelashvili B. Krusche

Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion ($πN$) TDAs from $\bar{p}p \to e^+e^- π^0$ reaction with the future PANDA detector at the FAIR facility. At high center of mass energy and high invariant mass squared of the lepton pair $q^2$, the amplitude of the signal channel $\bar{p}p \to e^+e^- π^0$ admits a QCD factorized description in terms of $πN$ TDAs and nucleon Distribution Amplitudes (DAs) in the forward and backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring $\bar{p}p \to e^+e^- π^0$ with the PANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, i.e. $\bar{p}p \to π^+π^- π^0$ were performed for the center of mass energy squared $s = 5$ GeV$^2$ and $s = 10$ GeV$^2$, in the kinematic regions $3.0 < q^2 < 4.3$ GeV$^2$ and $5 < q^2 < 9$ GeV$^2$, respectively, with a neutral pion scattered in the forward or backward cone $| \cosθ_{π^0}| > 0.5 $ in the proton-antiproton center of mass frame. Results of the simulation show that the particle identification capabilities of the PANDA detector will allow to achieve a background rejection factor of $5\cdot 10^7$ ($1\cdot 10^7$) at low (high) $q^2$ for $s=5$ GeV$^2$, and of $1\cdot 10^8$ ($6\cdot 10^6$) at low (high) $q^2$ for $s=10$ GeV$^2$, while keeping the signal reconstruction efficiency at around $40\%$. At both energies, a clean lepton signal can be reconstructed with the expected statistics corresponding to $2$ fb$^{-1}$ of integrated luminosity. (.../...)

Invariant mass

Antiproton

Particle identification

Bar (unit)

10.48550/arxiv.1409.0865

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Citations (2)

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.

Annihilation

Bar (unit)

Antiproton

10.1103/physrevd.95.032003

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Citations (29)

Technical Design Report for the Panda Forward Spectrometer Calorimeter

arXiv (Cornell University) (2017)

B. Singh W. Erni I. Keshelashvili B. Krusche M. Steinacher

This document is devoted to the electromagnetic calorimeter of the Forward Spectrometer and describes the design considerations, the technical layout, the expected performance, and the production readiness.

Calorimeter (particle physics)

10.48550/arxiv.1704.02713

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Citations (5)

Technical design report for the $\overline{P}$ ANDA (AntiProton Annihilations at Darmstadt) Straw Tube Tracker

The European Physical Journal A (2013)

W. Erni I. Keshelashvili B. Krusche M. Steinacher Y. K. Heng

This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the $\overline{P}$ ANDA target spectrometer. The STT encloses a Micro-Vertex-Detector (MVD) for the inner tracking and is followed in beam direction by a set of GEM stations. The tasks of the STT are the measurement of the particle momentum from the reconstructed trajectory and the measurement of the specific energy loss for a particle identification. Dedicated simulations with full analysis studies of certain proton-antiproton reactions, identified as being benchmark tests for the whole $\overline{P}$ ANDA scientific program, have been performed to test the STT layout and performance. The results are presented, and the time lines to construct the STT are described.

Tracking (education)

Antiproton

Benchmark (surveying)

Particle identification

Momentum (technical analysis)

10.1140/epja/i2013-13025-8

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Citations (90)

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)

Experimental access to Transition Distribution Amplitudes with the P̄ANDA experiment at FAIR

The European Physical Journal A (2015)

B. P. Singh W. Erni I. Keshelashvili B. Krusche M. Steinacher

Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion (πN) TDAs from $$\bar pp \to e^ + e^ - \pi ^0 $$ reaction with the future P̄ANDA detector at the FAIR facility. At high center-of-mass energy and high invariant mass squared of the lepton pair q 2, the amplitude of the signal channel $$\bar pp \to e^ + e^ - \pi ^0 $$ admits a QCD factorized description in terms of πN TDAs and nucleon Distribution Amplitudes (DAs) in the forward and backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring $$\bar pp \to e^ + e^ - \pi ^0 $$ with the P̄ANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, i.e. $$\bar pp \to \pi ^ + \pi ^ - \pi ^0 $$ were performed for the center-of-mass energy squared s = 5 GeV2 and s = 10 GeV2, in the kinematic regions 3.0 < q 2 < 4.3 GeV2 and 5 < q 2 GeV2, respectively, with a neutral pion scattered in the forward or backward cone $\left| {\cos \theta _{\pi ^0 } } \right| > 0.5$ in the proton-antiproton center-of-mass frame. Results of the simulation show that the particle identification capabilities of the P̄ANDA detector will allow to achieve a background rejection factor of 5 · 107 (1 · 107) at low (high) q 2 for s = 5 GeV2, and of 1 · 108 (6 · 106) at low (high) q 2 for s = 10 GeV2, while keeping the signal reconstruction efficiency at around 40%. At both energies, a clean lepton signal can be reconstructed with the expected statistics corresponding to 2 fb−1 of integrated luminosity. The cross sections obtained from the simulations are used to show that a test of QCD collinear factorization can be done at the lowest order by measuring scaling laws and angular distributions. The future measurement of the signal channel cross section with P̄ANDA will provide a new test of the perturbative QCD description of a novel class of hard exclusive reactions and will open the possibility of experimentally accessing π TDAs.

Invariant mass

Particle identification

10.1140/epja/i2015-15107-y

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Citations (36)