Publications (35)
Technical Design Report for the: PANDA Straw Tube Tracker
PANDA Collaboration, W. Erni, I. Keshelashvili +470
This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the PANDA target spectrometer. The STT encl…
Extreme photometric and polarimetric variability of blazar S4 0954+65 at its maximum optical and -ray brightness levels
C. M. Raiteri, M. Villata, M. I. Carnerero +64
In 2022 the BL Lac object S4 0954+65 underwent a major variability phase, reaching its historical maximum brightness in the optical and -ray bands. We present optical photometr…
ATHENA Detector Proposal -- A Totally Hermetic Electron Nucleus Apparatus proposed for IP6 at the Electron-Ion Collider
ATHENA Collaboration, J. Adam, L. Adamczyk +433
ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine trackin…
Exclusive electroproduction at GeV with CLAS
I. Bedlinskiy, V. Kubarovsky, S. Niccolai +143
Exclusive neutral-pion electroproduction () was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sect…
Determination of the Beam-Spin Asymmetry of Deuteron Photodisintegration in the Energy Region GeV
Nicholas Zachariou, Yordanka Ilieva, Nikolay Ya. Ivanov +140
The beam-spin asymmetry, , for the reaction has been measured using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelera…
Cosmology Large Angular Scale Surveyor (CLASS) Focal Plane Development
D. T. Chuss, A. Ali, M. Amiri +28
The Cosmology Large Angular Scale Surveyor (CLASS) will measure the polarization of the Cosmic Microwave Background to search for and characterize the polarized signature of inflat…
Knockout of proton-neutron pairs from O with electromagnetic probes
D. G. Middleton, J. R. M. Annand, C. Barbieri +10
After recent improvements to the Pavia model of two-nucleon knockout from O with electromagnetic probes the calculated cross sections are compared to experimental data from…
LiteBIRD Science Goals and Forecasts: constraining isotropic cosmic birefringence
E. de la Hoz, P. Diego-Palazuelos, J. Errard +112
Cosmic birefringence (CB) is the rotation of the photons' linear polarisation plane during propagation. Such an effect is a tracer of parity-violating extensions of standard electr…
Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
PANDA Collaboration, W. Erni, I. Keshelashvili +411
To study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitation…
Precise Measurements of Beam Spin Asymmetries in Semi-Inclusive production
M. Aghasyan, H. Avakian, P. Rossi +151
We present studies of single-spin asymmetries for neutral pion electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized hy…
Polarized Structure Function from Electroproduction Data in the Resonance Region at GeV GeV
E. L. Isupov, V. D. Burkert, A. A. Golubenko +138
The first results on the structure function in exclusive electroproduction at invariant masses of the final state of 1.5 GeV 1.8 GeV and in the range…
Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab: an update on PR12-16-001
M. Battaglieri, A. Bersani, G. Bracco +123
This document is an update to the proposal PR12-16-001 Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab submitted to JLab-PAC44 in 2016 reporting progress in add…
Measurement of deeply virtual Compton scattering off Helium-4 with CLAS at Jefferson Lab
R. Dupré, M. Hattawy, N. A. Baltzell +138
We report on the measurement of the beam spin asymmetry in the deeply virtual Compton scattering off He using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab us…
Beam spin asymmetry in semi-inclusive electroproduction of a hadron pair
M. Mirazita, H. Avakian, A. Courtoy +140
A first measurement of the longitudinal beam spin asymmetry ALU in the semi-inclusive electroproduction of pairs of charged pions is reported. ALU is a higher-twist observable and…
Momentum sharing in imbalanced Fermi systems
O. Hen, M. Sargsian, L. B. Weinstein +138
The atomic nucleus is composed of two different kinds of fermions, protons and neutrons. If the protons and neutrons did not interact, the Pauli exclusion principle would force the…
Improved Elastic Scattering Cross Sections Between 0.9 and 2.0 GeV/c and Connections to the Neutron Star Equation of State
CLAS Collaboration, J. Rowley, N. Compton +143
Strange matter is believed to exist in the cores of neutron stars based on simple kinematics. If this is true, then hyperon-nucleon interactions will play a significant part in the…
Strangeness Photoproduction at the BGO-OD Experiment
T. C. Jude, S. Alef, D. Bayadilov +61
BGO-OD is a newly commissioned experiment to investigate the internal structure of the nucleon, using an energy tagged bremsstrahlung photon beam at the ELSA electron facility. The…
Measurement of the Electric Form Factor of the Neutron at Q^2 = 0.3-0.8 (GeV/c)^2
D. I. Glazier, M. Seimetz, J. R. M. Annand +41
The electric form factor of the neutron, G_En, has been measured at the Mainz Microtron by recoil polarimetry in the quasielastic D(e_pol,e'n_pol)p reaction. Three data points have…
Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)
PANDA Collaboration, W. Erni, I. Keshelashvili +407
This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to m…
Photoproduction of meson pairs on the proton
S. Lombardo, M. Battaglieri, A. Celentano +13
The exclusive reaction was studied in the photon energy range $3.0 - 3.8 \mbox{ GeV}$ and momentum transfer range $0.6<-t<1.3 \mbox{ GeV}^2$. Data were collecte…
A new measurement of Beam Asymmetry in Pion Photoproduction from the Neutron using CLAS
D. Sokhan, D. Watts, D. Branford +1
We present a preliminary analysis of the photon beam asymmetry observable (Sigma) from the photoproduction reaction channel gamma+ n -> p + pi-. This new data was obtained using th…
Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR
PANDA Collaboration, B. P. Singh, W. Erni +532
Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description fo…
Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab -- 2018 update to PR12-16-001
M. Battaglieri, A. Bersani, G. Bracco +122
This document complements and completes what was submitted last year to PAC45 as an update to the proposal PR12-16-001 "Dark matter search in a Beam-Dump eXperiment (BDX)" at Jeffe…
Measurement of the structure function of the nearly free neutron using spectator tagging in inelastic H(e, e'p)X scattering with CLAS
S. Tkachenko, N. Baillie, S. E. Kuhn +148
Much less is known about neutron structure than that of the proton due to the absence of free neutron targets. Neutron information is usually extracted from data on nuclear targets…
Technical Design Report for the PANDA Solenoid and Dipole Spectrometer Magnets
The PANDA Collaboration, W. Erni, I. Keshelashvili +407
This document is the Technical Design Report covering the two large spectrometer magnets of the PANDA detector set-up. It shows the conceptual design of the magnets and their antic…
Technical Design Report for the PANDA Endcap Disc DIRC
Panda Collaboration, F. Davi, W. Erni +460
PANDA (anti-Proton ANnihiliation at DArmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and I…
A precision measurement of the () reaction at threshold
K. Chirapatpimol, M. H. Shabestari, R. A. Lindgren +91
New results are reported from a measurement of electroproduction near threshold using the reaction. The experiment was designed to determine precisel…
PANDA Phase One
G. Barucca, F. Davì, G. Lancioni +421
The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. T…
Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR
PANDA Collaboration, B. Singh, W. Erni +502
Simulation results for future measurements of electromagnetic proton form factors at \PANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision w…
Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab
BDX Collaboration, M. Battaglieri, A. Celentano +83
MeV-GeV dark matter (DM) is theoretically well motivated but remarkably unexplored. This Letter of Intent presents the MeV-GeV DM discovery potential for a 1 m segmented plasti…
Evidence for the Onset of Color Transparency in Electroproduction off Nuclei
L. El Fassi, L. Zana, K. Hafidi +154
We have measured the nuclear transparency of the incoherent diffractive process in C and Fe targets relative to H using a 5 GeV electron beam. The n…
Feasibility study for the measurement of TDAs at PANDA in
PANDA Collaboration, B. Singh, W. Erni +508
The exclusive charmonium production process in annihilation with an associated meson is studied in the framework of QCD collinear factoriza…
Cosmoglobe: Simulating zodiacal emission with ZodiPy
M. San, D. Herman, G. B. Erikstad +2
We present ZodiPy, a modern and easy-to-use Python package for modeling the zodiacal emission seen by an arbitrary Solar System observer, which can be used for the removal of both…
Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab
M. Battaglieri, A. Bersani, B. Caiffi +101
MeV-GeV dark matter (DM) is theoretically well motivated but remarkably unexplored. This proposal presents the MeV-GeV DM discovery potential for a 1 m segmented CsI(Tl)…
Technical Design Report for the: PANDA Micro Vertex Detector
PANDA Collaboration, W. Erni, I. Keshelashvili +454
This document illustrates the technical layout and the expected performance of the Micro Vertex Detector (MVD) of the PANDA experiment. The MVD will detect charged particles as clo…