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21 results on '"Patsyuk, Maria"'

1. The GlueX DIRC Project

Author

Stevens, Justin, Barbosa, Fernando, Bessuille, Jason, Chudakov, Eugene, Dzhygadlo, Roman, Fanelli, Cristiano, Frye, John, Hardin, John, Kelsey, Jim, Patsyuk, Maria, Schwartz, Carsten, Schwiening, Jochen, Shepherd, Matthew, Whitlatch, Tim, and Williams, Michael

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The GlueX experiment was designed to search for and study the pattern of gluonic excitations in the meson spectrum produced through photoproduction reactions at a new tagged photon beam facility in Hall D at Jefferson Laboratory. The particle identification capabilities of the GlueX experiment will be enhanced by constructing a DIRC (Detection of Internally Reflected Cherenkov light) detector, utilizing components of the decommissioned BaBar DIRC. The DIRC will allow systematic studies of kaon final states that are essential for inferring the quark flavor content of both hybrid and conventional mesons. The design for the GlueX DIRC is presented, including the new expansion volumes that are currently under development., Comment: 8 pages, 6 figures

Published
2016
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3. First glance at the tracking detectors data collected in the first BM@N SRC run

Author

Khabarov Sergey, Kulish Elena, Lenivenko Vasilisa, Makankin Alexander, Maksymchuk Anna, Palichik Vladimir, Patsyuk Maria, Vasiliev Sergey, Vishnevskij Aleksander, and Voytishin Nikolay

Subjects
Physics, QC1-999
Abstract

BM@N (Baryonic Matter at Nuclotron) is the first experiment at the accelerator complex of NICA-Nuclotron at JINR (Dubna). The aim of the experiment is to study collisions of relativistic ion beams of the kinetic energy from 1 to 4.5 AGeV with fixed targets. The last run started a new physics program of BM@N – Short Range Correlations (SRC) studies in light nuclei. The BM@N setup allows detecting of the residual nucleus for the first time. BM@N tracking detectors play a key role in the identification of the nucleus after hard scattering in inverse kinematics. We present the first results of the BM@N tracking detectors using the data collected in spring 2018.

Published
2019
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4. Exclusive studies on short range correlations in nuclei

Author

Patsyuk Maria, Hen Or, and Piasetzky Eliezer

Subjects
Physics, QC1-999
Abstract

Short Range Correlations (SRC) are brief fluctuations of high relative momentum nucleon pairs. Properties of SRC have important consequences for nuclear physics, high energy physics, atomic physics, and astrophysics. SRC pairs form some of the densest states of cold matter achievable on Earth, making them an ideal system to study the partonic and nucleonic degrees of freedom in nuclear systems. Hard exclusive breakup reactions, where high-energy probes scatter on SRC pairs, are used to study such properties of SRC pairs as isospin decomposition, nuclear mass and asymmetry dependence, c.m. momentum distribution. Thomas Jefferson National Accelerator Facility (JLab) plays a key role in the SRC program. CLAS (CEBAF Large Acceptance Spectrometer), located in Hall B at JLab, has almost 4π coverage and is capable of measuring exclusive reactions of the type A(e, e’pp). We will discuss the recent experimental results from JLab and future experiments planned at JLab as well as at JINR.

Published
2019
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5. Probing Few-Body Nuclear Dynamics via H 3 and He 3 ( e , e ′ p ) pn Cross-Section Measurements

Author

Massachusetts Institute of Technology. Laboratory for Nuclear Science, Massachusetts Institute of Technology. Department of Physics, Jefferson Lab Hall A Tritium Collaboration, Cruz Torres, Reynier, Nguyen, D., Schmidt, A., Beck, Arie, Gilad, Shalev, Hen, Or, Laskaris, Georgios, Beck, S. May-Tal, Ou, Longwu, Papadopoulou, Afroditi, Patsyuk, Maria, Segarra, Efrain Patrick, Schmookler, Barak Abraham, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Massachusetts Institute of Technology. Department of Physics, Jefferson Lab Hall A Tritium Collaboration, Cruz Torres, Reynier, Nguyen, D., Schmidt, A., Beck, Arie, Gilad, Shalev, Hen, Or, Laskaris, Georgios, Beck, S. May-Tal, Ou, Longwu, Papadopoulou, Afroditi, Patsyuk, Maria, Segarra, Efrain Patrick, and Schmookler, Barak Abraham

Published
2022

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Author

Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Fanelli, Cristiano, Patsyuk, Maria, Williams, Michael, Yang, Y., Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Fanelli, Cristiano, Patsyuk, Maria, Williams, Michael, and Yang, Y.

Published
2022

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Author

Massachusetts Institute of Technology. Laboratory for Nuclear Science, Massachusetts Institute of Technology. Department of Physics, Fanelli, Cristiano, Hardin, John Melvin, Patsyuk, Maria, Williams, Michael, Yang, Y., Massachusetts Institute of Technology. Laboratory for Nuclear Science, Massachusetts Institute of Technology. Department of Physics, Fanelli, Cristiano, Hardin, John Melvin, Patsyuk, Maria, Williams, Michael, and Yang, Y.

Published
2022

8. Direct Observation of Proton-Neutron Short-Range Correlation Dominance in Heavy Nuclei

Author

Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, CLAS Collaboration, Schmidt, A., Pybus, J. R., Segarra, Efrain Patrick, Hrnjic, A., Denniston, Alastair K., Hen, Or, Beck, Arie, Cruz Torres, Reynier, Laskaris, Georgios, Beck, Sharon, Patsyuk, Maria, Schmookler, Barak Abraham, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, CLAS Collaboration, Schmidt, A., Pybus, J. R., Segarra, Efrain Patrick, Hrnjic, A., Denniston, Alastair K., Hen, Or, Beck, Arie, Cruz Torres, Reynier, Laskaris, Georgios, Beck, Sharon, Patsyuk, Maria, and Schmookler, Barak Abraham

Abstract

© 2019 American Physical Society. We measured the triple coincidence A(e,e′np) and A(e,e′pp) reactions on carbon, aluminum, iron, and lead targets at Q2>1.5 (GeV/c)2, xB>1.1 and missing momentum >400 MeV/c. This was the first direct measurement of both proton-proton (pp) and neutron-proton (np) short-range correlated (SRC) pair knockout from heavy asymmetric nuclei. For all measured nuclei, the average proton-proton (pp) to neutron-proton (np) reduced cross-section ratio is about 6%, in agreement with previous indirect measurements. Correcting for single-charge exchange effects decreased the SRC pairs ratio to ∼3%, which is lower than previous results. Comparisons to theoretical generalized contact formalism (GCF) cross-section calculations show good agreement using both phenomenological and chiral nucleon-nucleon potentials, favoring a lower pp to np pair ratio. The ability of the GCF calculation to describe the experimental data using either phenomenological or chiral potentials suggests possible reduction of scale and scheme dependence in cross-section ratios. Our results also support the high-resolution description of high-momentum states being predominantly due to nucleons in SRC pairs.

Published
2022

10. GlueX overview: status and some future plans

Author

Patsyuk Maria

Subjects
Physics, QC1-999
Abstract

The GlueX experiment at Thomas Jefferson National Accelerator Facility (Jefferson Lab) has started data taking in late 2014 with its first commissioning beam. All of the detector systems are now performing at or near design specifications and events are being fully reconstructed. Linearly-polarized photons were successfully produced through coherent bremsstrahlung. An upgrade of the particle identification (PID) system with a GlueX DIRC detector, planned for 2018, will allow identification of final state kaons. The construction of the GlueX DIRC has already started. One of the plans for GlueX is to study properties of short-range correlations (SRC) in nuclei, which will shed new light on the quark-gluon structure of bound nucleons.

Published
2017
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11. Exclusive studies on short range correlations in nuclei

Author

Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Patsyuk, Maria, Hen, Or, Piasetzky, Eliezer, Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Patsyuk, Maria, Hen, Or, and Piasetzky, Eliezer

Published
2021

12. Comparing proton momentum distributions in A = 2 and 3 nuclei via [superscript 2]H [superscript 3]H and [superscript 3]He (e,e′p) measurements

Author

Massachusetts Institute of Technology. Laboratory for Nuclear Science, Cruz Torres, Reynier, Schmidt, A., Beck, Arie, Gilad, Shalev, Hen, Or, Laskaris, Georgios, Beck, S. May-Tal, Ou, Longwu, Papadopoulou, A., Patsyuk, Maria, Segarra, E. P., Schmookler, Barak Abraham, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Cruz Torres, Reynier, Schmidt, A., Beck, Arie, Gilad, Shalev, Hen, Or, Laskaris, Georgios, Beck, S. May-Tal, Ou, Longwu, Papadopoulou, A., Patsyuk, Maria, Segarra, E. P., and Schmookler, Barak Abraham

Published
2021

13. Probing the core of the strong nuclear interaction

Author

Massachusetts Institute of Technology. Department of Mechanical Engineering, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Schmidt, Aaron J, Pybus, J. R., Segarra, E. P., Hrnjic, A., Denniston, A., Hen, Or, Beck, Arie, Cruz Torres, Reynier, Gilad, Shalev, May-Tal Beck, S, Patsyuk, Maria, Schmookler, Barak Abraham, Massachusetts Institute of Technology. Department of Mechanical Engineering, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Schmidt, Aaron J, Pybus, J. R., Segarra, E. P., Hrnjic, A., Denniston, A., Hen, Or, Beck, Arie, Cruz Torres, Reynier, Gilad, Shalev, May-Tal Beck, S, Patsyuk, Maria, and Schmookler, Barak Abraham

Abstract

The strong nuclear interaction between nucleons (protons and neutrons) is the effective force that holds the atomic nucleus together. This force stems from fundamental interactions between quarks and gluons (the constituents of nucleons) that are described by the equations of quantum chromodynamics. However, as these equations cannot be solved directly, nuclear interactions are described using simplified models, which are well constrained at typical inter-nucleon distances1–5 but not at shorter distances. This limits our ability to describe high-density nuclear matter such as that in the cores of neutron stars6. Here we use high-energy electron scattering measurements that isolate nucleon pairs in short-distance, high-momentum configurations7–9, accessing a kinematical regime that has not been previously explored by experiments, corresponding to relative momenta between the pair above 400 megaelectronvolts per c (c, speed of light in vacuum). As the relative momentum between two nucleons increases and their separation thereby decreases, we observe a transition from a spin-dependent tensor force to a predominantly spin-independent scalar force. These results demonstrate the usefulness of using such measurements to study the nuclear interaction at short distances and also support the use of point-like nucleon models with two- and three-body effective interactions to describe nuclear systems up to densities several times higher than the central density of the nucleus.

Published
2021

15. Measurement of nuclear transparency ratios for protons and neutrons

Author

Massachusetts Institute of Technology. Laboratory for Nuclear Science, CLAS Collaboration, Hen, Or, Cruz-Torres, R., Laskaris, Georgios, Beck, S. May-Tal, Patsyuk, Maria, Schmookler, Barak Abraham, Segarra, E. P., Massachusetts Institute of Technology. Laboratory for Nuclear Science, CLAS Collaboration, Hen, Or, Cruz-Torres, R., Laskaris, Georgios, Beck, S. May-Tal, Patsyuk, Maria, Schmookler, Barak Abraham, and Segarra, E. P.

Published
2020

16. SRC at BM@N: Reconstruction of tracks upstream and downstream from the target using the MWPC and silicon detector systems.

Author

Lenivenko, Vasilisa, Palichik, Vladimir, and Patsyuk, Maria

Subjects
SILICON detectors, LIQUID hydrogen, PROTON scattering, MAGNETS, DETECTORS, SCINTILLATORS
Abstract

The Baryonic Matter at Nuclotron (BM@N) is the first experiment with a fixed target at the Nuclotron-based Ion Collider fAcility (NICA) in Dubna (Russia). Along with baryonic matter study, the BM@N physics program includes the study of Short-Range Correlations (SRC) in nuclei. The SRC measurement was carried out in 2018. We used 12C beam with the momentum of 48 GeV/c and a liquid hydrogen target. The quasi-free scattering of 12C on protons was recorded with the BM@N spectrometer, which was slightly modified for the SRC experiment. Particularly, the target proton and knocked out proton under the condition of scattering at 90 degrees in the center-of-mass coordinate system were recorded in the arm spectrometer using time-of-flight and coordinate detectors. After interaction, the residual nucleus continued moving along the beam and passed through the scintillator and coordinate detectors as well as the analyzing magnet. This contribution describes the track reconstruction in Multiwire Proportional Chambers (MWPC) and Silicon Detector systems (Si), as well as a method of obtaining combined tracks after the target using the information from MWPC and Si. This is a basis for the identification of nuclear fragments described in the first physics analysis, which was submitted for publication. [ABSTRACT FROM AUTHOR]

Published
2021
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17. GlueX overview: status and some future plans

Author

GlueX Collaboration, Patsyuk, Maria, Massachusetts Institute of Technology. Laboratory for Nuclear Science, and Patsyuk, Maria

Subjects
Physics, Particle physics, GlueX, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, QC1-999, 01 natural sciences, Particle identification, Nuclear physics, Upgrade, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment
Abstract

The GlueX experiment at Thomas Jefferson National Accelerator Facility (Jefferson Lab) has started data taking in late 2014 with its first commissioning beam. All of the detector systems are now performing at or near design specifications and events are being fully reconstructed. Linearly-polarized photons were successfully produced through coherent bremsstrahlung. An upgrade of the particle identification (PID) system with a GlueX DIRC detector, planned for 2018, will allow identification of final state kaons. The construction of the GlueX DIRC has already started. One of the plans for GlueX is to study properties of short-range correlations (SRC) in nuclei, which will shed new light on the quark-gluon structure of bound nucleons.

Published
2017

18. GlueX overview: status and some future plans

Author

Massachusetts Institute of Technology. Laboratory for Nuclear Science, Patsyuk, Maria, GlueX Collaboration, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Patsyuk, Maria, and GlueX Collaboration

Abstract

The GlueX experiment at Thomas Jefferson National Accelerator Facility (Jefferson Lab) has started data taking in late 2014 with its first commissioning beam. All of the detector systems are now performing at or near design specifications and events are being fully reconstructed. Linearly-polarized photons were successfully produced through coherent bremsstrahlung. An upgrade of the particle identification (PID) system with a GlueX DIRC detector, planned for 2018, will allow identification of final state kaons. The construction of the GlueX DIRC has already started. One of the plans for GlueX is to study properties of short-range correlations (SRC) in nuclei, which will shed new light on the quark-gluon structure of bound nucleons.

Published
2018

19. First glance at the tracking detectors data collected in the first BM@N SRC run.

Author

Bobrikov, I., Chudoba, V., Derenovskaya, O., Friesen, A., Verkheev, A., Khabarov, Sergey, Kulish, Elena, Lenivenko, Vasilisa, Makankin, Alexander, Maksymchuk, Anna, Palichik, Vladimir, Patsyuk, Maria, Vasiliev, Sergey, Vishnevskij, Aleksander, and Voytishin, Nikolay

Subjects
DETECTORS, ION beams, KINETIC energy, HYPERFRAGMENTS, PHYSICS research
Abstract

BM@N (Baryonic Matter at Nuclotron) is the first experiment at the accelerator complex of NICA-Nuclotron at JINR (Dubna). The aim of the experiment is to study collisions of relativistic ion beams of the kinetic energy from 1 to 4.5 AGeV with fixed targets. The last run started a new physics program of BM@N – Short Range Correlations (SRC) studies in light nuclei. The BM@N setup allows detecting of the residual nucleus for the first time. BM@N tracking detectors play a key role in the identification of the nucleus after hard scattering in inverse kinematics. We present the first results of the BM@N tracking detectors using the data collected in spring 2018. [ABSTRACT FROM AUTHOR]

Published
2019
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20. Simulation, reconstruction, and design optimization for the PANDA Barrel DIRC

Author

Patsyuk, Maria

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Experiment, ddc:530
Abstract

The PANDA experiment at FAIR will study fundamental questions of strong interaction with high precision. Effcient particle identification for a wide momentum range and the full solid angle is required for successful reconstruction of the benchmark channels of the broad PANDA physics program. For this purpose a compact ring imaging Cherenkov detector is being developed for the barrel region of the PANDA detector. The concept and the baseline design of the PANDA Barrel DIRC were inspired by the BABAR DIRC and improved with important modifications, like fast photon timing, a compact expansion volume, and focusing optics. The required detector resolution was defined based on the PANDA PID specifications using the phase space distributions of the final state kaons produced in selected benchmark channels. To optimize the PANDA Barrel DIRC design in terms of performance and cost the baseline detector geometry and a number of design options were implemented in the simulation. The key options include the radiator dimensions, two types of expansion volume shapes, and a variety of focusing systems. The performance of the detector designs was quantified in terms of single photon Cherenkov angle resolution and photon yield. It was found that the number of radiators can be reduced by about 40% without loss in performance. A compound spherical lens without air gap was found to be a promising focusing system. An optimized Barrel DIRC design meeting the PID requirements includes three radiator bars per at section, the compound lens without air gap, a compact prism-shaped EV, and a total of 192 Microchannel-Plate PMTs as photosensors. The number of electronic channels can be halved without loss in performance by combining two neighbouring pixels. For such a detector design the total cost will be significantly reduced compared to the baseline version while still meeting or exceeding the PANDA PID performance goals.

Published
2015

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