D. Sober

activity

20002025

S = + 1

Baryon in Exclusive Photoproduction from the Deuteron

396 citations · 8.3k across the 151 of their papers we have counts for

collaborators

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104 papers · 1 filter

nucl-ex2025

Measurement of the Total Compton Scattering Cross Section between 6.5 and 11 GeV

GlueX Collaboration, F. Afzal, C. S. Akondi +148

The total cross section for Compton scattering off atomic electrons, $γ + e \to γ^{'} + e^{'}$ , was measured using photons with energies between 6.5 and 11.1 GeV incident on a $^{9}$ Be t…

nucl-ex2025

First Measurement of $a_{2}^{0} (1320)$ Polarized Photoproduction Cross Section

GlueX Collaboration, F. Afzal, C. S. Akondi +149

We measure for the first time the differential photoproduction cross section $d σ / d t$ of the $a_{2} (1320)$ meson at an average photon beam energy of 8.5~GeV, using data with an integr…

nucl-ex2024

Measurement of Spin-Density Matrix Elements in $Δ^{++} (1232)$ photoproduction

F. Afzal, C. S. Akondi, M. Albrecht +146

We measure the spin-density matrix elements (SDMEs) of the $Δ^{++} (1232)$ in the photoproduction reaction $γ p \to π^{-} Δ^{++} (1232)$ with the GlueX experiment in Hall D at Jefferson…

nucl-ex2024★ 6 cited

Upper Limit on the Photoproduction Cross Section of the Spin-Exotic $π_{1} (1600)$

GlueX Collaboration, F. Afzal, C. S. Akondi +147

The spin-exotic hybrid meson $π_{1} (1600)$ is predicted to have a large decay rate to the $ω π π$ final state. Using 76.6~pb $^{- 1}$ of data collected with the GlueX detector, we meas…

nucl-ex2023★ 16 cited

Measurement of Spin-Density Matrix Elements in $ρ (770)$ Production with a Linearly Polarized Photon Beam at $E_{γ} = 8.2 - 8.8 GeV$

GlueX Collaboration, S. Adhikari, F. Afzal +150

The GlueX experiment at Jefferson Lab studies photoproduction of mesons using linearly polarized $8.5 GeV$ photons impinging on a hydrogen target which is contained within…

nucl-ex2023★ 69 cited

Measurement of the J/ $ψ$ photoproduction cross section over the full near-threshold kinematic region

GlueX Collaboration, S. Adhikari, F. Afzal +150

We report the total and differential cross sections for $J / ψ$ photoproduction with the large acceptance GlueX spectrometer for photon beam energies from the threshold at 8.2~GeV up…

nucl-ex2020★ 9 cited

Measurement of beam asymmetry for $π^{-} Δ^{++}$ photoproduction on the proton at $E_{γ}$ =8.5 GeV

GlueX Collaboration, S. Adhikari, C. S. Akondi +134

We report a measurement of the $π^{-}$ photoproduction beam asymmetry for the reaction $γ p \to π^{-} Δ^{++}$ using data from the GlueX experiment in the photon beam energy…

nucl-ex2020★ 17 cited

Strange Hadron Spectroscopy with Secondary KL Beam in Hall D

KLF Collaboration, Moskov Amaryan, Mikhail Bashkanov +150

We propose to create a secondary beam of neutral kaons in Hall D at Jefferson Lab to be used with the GlueX experimental setup for strange hadron spectroscopy. The superior CEBAF e…

nucl-ex2020★ 7 cited

Measurement of the Photon Beam Asymmetry in $γ p \to K^{+} Σ^{0}$ at $E_{γ} = 8.5$ GeV

The GlueX Collaboration, S. Adhikari, A. Ali +124

We report measurements of the photon beam asymmetry $Σ$ for the reaction $γ p \to K^{+} Σ^{0}$ (1193) using the GlueX spectrometer in Hall D at Jefferson Lab. Data were collected usin…

nucl-ex2019★ 25 cited

Beam Asymmetry $Σ$ for the Photoproduction of $η$ and $η^{'}$ Mesons at $E_{γ} = 8.8$ GeV

The GlueX Collaboration, S. Adhikari, A. Ali +131

We report on the measurement of the beam asymmetry $Σ$ for the reactions $γ p \to p η$ and $γ p \to p η^{'}$ from the GlueX experiment, using an 8.2--8.8 Ge…

nucl-ex2019★ 205 cited

First measurement of near-threshold J/ $ψ$ exclusive photoproduction off the proton

The GlueX Collaboration, A. Ali, M. Amaryan +132

We report on the measurement of the $γ p \to J / ψ p$ cross section from $E_{γ} = 11.8$ GeV down to the threshold at $8.2$ GeV using a tagged photon beam with the GlueX experiment…

nucl-ex2019★ 5 cited

High Precision Measurement of Compton Scattering in the 5 GeV region

P. Ambrozewicz, L. Ye, Y. Prok +94

The cross section of atomic electron Compton scattering $γ + e \to γ^{'} + e^{'}$ was measured in the 4.40--5.475 GeV photon beam energy region by the {\em PrimEx} co…

nucl-ex2018★ 35 cited

First results on nucleon resonance photocouplings from the $γ p \to π^{+} π^{-} p$ reaction

CLAS Collaboration, E. Golovatch, V. D. Burkert +127

We report the first experimental measurements of the nine 1-fold differential cross sections for the $γ p \to π^{+} π^{-} p$ reaction, obtained with the CLAS detector at Jefferson Laborat…

nucl-ex2018★ 10 cited

Beam-Target Helicity Asymmetry $E$ in $K^{0} Λ$ and $K^{0} Σ^{0}$ Photoproduction on the Neutron

CLAS Collaboration, D. H. Ho, R. A. Schumacher +146

We report the first measurements of the $E$ beam-target helicity asymmetry for the $γ n \to K^{0} Λ$ , and $K^{0} Σ^{0}$ channels in the energy range 1.70 $\leq W \leq$ 2.34 Ge…

nucl-ex2017★ 12 cited

Measurement of the beam asymmetry $Σ$ and the target asymmetry $T$ in the photoproduction of $ω$ mesons off the proton using CLAS at Jefferson Laboratory

P. Roy, Z. Akbar, S. Park +143

The photoproduction of $ω$ mesons off the proton has been studied in the reaction $γ p \to p ω$ using the CEBAF Large Acceptance Spectrometer (CLAS) and the frozen-spin target (FROS…

nucl-ex2017★ 14 cited

Semi-Inclusive $π_{0}$ target and beam-target asymmetries from 6 GeV electron scattering with CLAS

S. Jawalkar, S. Koirala, H. Avakian +160

We present precision measurements of the target and beam-target spin asymmetries from neutral pion electroproduction in deep-inelastic scattering (DIS) using the CEBAF Large Accept…

nucl-ex2017★ 26 cited

Measurement of the helicity asymmetry $E$ in $ω \to π^{+} π^{-} π^{0}$ photoproduction

Z. Akbar, P. Roy, S. Park +131

The double-polarization observable $E$ was studied for the reaction $γ p \to p ω$ using the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B at the Thomas Jefferson National Accel…

nucl-ex2017★ 12 cited

Photon beam asymmetry $Σ$ in the reaction $γ p \to p ω$ for $E_{γ}$ = 1.152 to 1.876 GeV

CLAS Collaboration, P. Collins, B. G. Ritchie +147

Photon beam asymmetry $Σ$ measurements for $ω$ photoproduction in the reaction $γ p \to ω p$ are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a li…

nucl-ex2017

The Beam-Target Helicity Asymmetry for $γ n \to π^{-} p$ in the {\bf{ $N^{*}$ } Resonance Region

D. Ho, P. Peng, C. Bass +140

We report the first beam-target double-polarization asymmetries in the $γ + n (p) \to π^{-} + p (p)$ reaction spanning the nucleon resonance region from invariant mass $W$ = $150…

nucl-ex2017★ 59 cited

Measurement of the beam asymmetry $Σ$ for $π^{0}$ and $η$ photoproduction on the proton at $E_{γ} = 9$ GeV

GlueX Collaboration, H. Al Ghoul, E. G. Anassontzis +123

We report measurements of the photon beam asymmetry $Σ$ for the reactions $γ p \to p π^{0}$ and $γ p \to p η$ from the GlueX experiment using a 9 GeV linearly-polarized, tagged pho…

nucl-ex2016★ 21 cited

Photoproduction ofeta-pi pairs off nucleons and deuterons

A. Kaeser, F. Mueller, J. Ahrens +66

Quasi-free photoproduction of $π η$ -pairs has been investigated from threshold up to incident photon energies of 1.4 GeV, respectively up to photon-nucleon invariant masses up to 1.…

nucl-ex2016★ 49 cited

First Results from The GlueX Experiment

The GlueX Collaboration, H. Al Ghoul, E. G. Anassontzis +108

The GlueX experiment at Jefferson Lab ran with its first commissioning beam in late 2014 and the spring of 2015. Data were collected on both plastic and liquid hydrogen targets, an…

nucl-ex2015

Photoproduction of $π^{0}$ -pairs off protons and off neutrons

M. Dieterle, M. Oberle, J. Ahrens +71

Total cross sections, angular distributions, and invariant-mass distributions have been measured for the photoproduction of $π^{0} π^{0}$ pairs off free protons and off nucleons bound i…

nucl-ex2015

The isospin structure of photoproduction of pi-eta pairs from the nucleon in the threshold region

A. Käser, J. Ahrens, J. R. M. Annand +71

Photoproduction of $π η$ -pairs from nucleons has been investigated from threshold up to incident photon energies of $\approx$ ~1.4~GeV. The quasi-free reactions $γ p \to p π^{0} η$ …

Measurement of the Total Compton Scattering Cross Section between 6.5 and 11 GeV

First Measurement of a20​(1320) Polarized Photoproduction Cross Section

Measurement of Spin-Density Matrix Elements in Δ++(1232) photoproduction

Upper Limit on the Photoproduction Cross Section of the Spin-Exotic π1​(1600)

Measurement of Spin-Density Matrix Elements in ρ(770) Production with a Linearly Polarized Photon Beam at Eγ​=8.2−8.8GeV

Measurement of the J/ψ photoproduction cross section over the full near-threshold kinematic region

Measurement of beam asymmetry for π−Δ++ photoproduction on the proton at Eγ​=8.5 GeV

Strange Hadron Spectroscopy with Secondary KL Beam in Hall D

Measurement of the Photon Beam Asymmetry in γ​p→K+Σ0 at Eγ​=8.5 GeV

Beam Asymmetry Σ for the Photoproduction of η and η′ Mesons at Eγ​=8.8GeV

First measurement of near-threshold J/ψ exclusive photoproduction off the proton