L. Pentchev

activity

19992026

most citedMeasurement of GEp/GMp in ep -> ep to Q2 = 5.6 GeV2

650 citations · 2.8k across the 61 of their papers we have counts for

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Showing nucl-exShow all

47 papers · 1 filter

nucl-ex2026

Near-Threshold J/ $ψ \to μ^{+} μ^{-}$ Photoproduction and the Gluonic Gravitational Form Factors of the Proton

007 Collaboration, S. Joosten, Z. -E. Meziani +56

We report on the measurement of the two-dimensional differential cross section for near-threshold J/ $ψ \to μ^{+} μ^{-}$ photoproduction from the J/ $ψ$ -007 experiment in Hall C at Jeffers…

nucl-ex2026

Frascati 22 GeV Workshop Summary

A. Accardi, P. Achenbach, A. Afanasev +103

This document summarizes the outcomes of the "Science at the Luminosity Frontier: Jefferson Lab at 22 GeV" workshop, held at the INFN Laboratori Nazionali di Frascati in December 2…

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-ex2025

Investigation of Medium Modifications to $^{12}$ C Structure Functions in the Resonance Region

S. Alsalmi, I. Albayrak, A. Ahmidouch +75

We present results from a high precision experimental study of the nuclear modification of the longitudinal ( $F_{L}$ ) to transverse ( $F_{1}$ ) structure function ratio for bound nucleon…

nucl-ex2024

High precision measurements of the proton elastic electromagnetic form factors and their ratio at $Q^{2}$ = 0.50, 2.64, 3.20, and 4.10 GeV $^{2}$

I. A. Qattan, J. Arrington, K. Aniol +37

The advent of high-intensity, high-polarization electron beams led to significantly improved measurements of the ratio of the proton's charge to electric form factors, GEp/GMp. How…

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-ex2024★ 4 cited

"Rosenbluth" separation of the $J / ψ$ near-threshold photoproduction -- an access to the gluon Gravitational Form Factors at high $t$

Lubomir Pentchev, Eugene Chudakov

We perform analysis of the near-threshold $J / ψ$ photoproduction data off the proton based on two theoretical approaches, GPD [1] and holographic [2], that represent the differentia…

nucl-ex2023★ 19 cited

Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab

A. Accardi, P. Achenbach, D. Adhikari +441

This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a…

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-ex2022

Determining the Proton's Gluonic Gravitational Form Factors

B. Duran, Z. -E. Meziani, S. Joosten +52

The proton is one of the main building blocks of all visible matter in the universe. Among its intrinsic properties are its electric charge, mass, and spin. These emerge from the c…

nucl-ex2020★ 5 cited

Studying Short-Range Correlations with Real Photon Beams at GlueX

O. Hen, M. Patsyuk, E. Piasetzky +59

The past few years has seen tremendous progress in our understanding of short-range correlated (SRC) pairing of nucleons within nuclei, much of it coming from electron scattering e…

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★ 2 cited

Exclusive $π^{+}$ electroproduction off the proton from low to high -t

S. Basnet, G. M. Huber, W. B. Li +49

Background: Measurements of exclusive meson production are a useful tool in the study of hadronic structure. In particular, one can discern the relevant degrees of freedom at diffe…

nucl-ex2019

Unique Access to u-Channel Physics: Exclusive Backward-Angle Omega Meson Electroproduction

W. B. Li, G. M. Huber, H. P. Blok +53

Backward-angle meson electroproduction above the resonance region, which was previously ignored, is anticipated to offer unique access to the three quark plus sea component of the…

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-ex2018★ 3 cited

Measurements of Non-Singlet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for $Q^{2} = 4$ $Ge V^{2}$

I. Albayrak, V. Mamyan, M. E. Christy +75

We present extractions of the nucleon non-singlet moments utilizing new precision data on the deuteron $F_{2}$ structure function at large Bjorken- $x$ determined via the Rosenbluth s…

nucl-ex2018★ 14 cited

Proton Form Factor Ratio, $μ_{p} G_{E}^{p} / G_{M}^{p}$ from Double Spin Asymmetry

A. Liyanage, W. Armstrong, H. Kang +97

The ratio of the electric and magnetic form factor of the proton, $μ_{p} G_{E}^{p} / G_{M}^{p}$ , has been measured for elastic electron-proton scattering with polarized beam and target up to f…

nucl-ex2018★ 27 cited

Revealing Color Forces with Transverse Polarized Electron Scattering

W. Armstrong, H. Kang, A. Liyanage +101

The Spin Asymmetries of the Nucleon Experiment (SANE) measured two double spin asymmetries using a polarized proton target and polarized electron beam at two beam energies, 4.7 GeV…

Near-Threshold J/ψ→μ+μ− Photoproduction and the Gluonic Gravitational Form Factors of the Proton

Frascati 22 GeV Workshop Summary

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

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

Investigation of Medium Modifications to 12C Structure Functions in the Resonance Region

High precision measurements of the proton elastic electromagnetic form factors and their ratio at Q2 = 0.50, 2.64, 3.20, and 4.10 GeV2

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

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

"Rosenbluth" separation of the J/ψ near-threshold photoproduction -- an access to the gluon Gravitational Form Factors at high t

Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab

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

Determining the Proton's Gluonic Gravitational Form Factors

Studying Short-Range Correlations with Real Photon Beams at GlueX

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

Exclusive π+ electroproduction off the proton from low to high -t

Unique Access to u-Channel Physics: Exclusive Backward-Angle Omega Meson Electroproduction

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

Measurements of Non-Singlet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for Q2=4 GeV2

Proton Form Factor Ratio, μp​GEp​/GMp​ from Double Spin Asymmetry

Revealing Color Forces with Transverse Polarized Electron Scattering

Near-Threshold J/ $ψ \to μ^{+} μ^{-}$ Photoproduction and the Gluonic Gravitational Form Factors of the Proton

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

Investigation of Medium Modifications to $^{12}$ C Structure Functions in the Resonance Region

High precision measurements of the proton elastic electromagnetic form factors and their ratio at $Q^{2}$ = 0.50, 2.64, 3.20, and 4.10 GeV $^{2}$

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

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

"Rosenbluth" separation of the $J / ψ$ near-threshold photoproduction -- an access to the gluon Gravitational Form Factors at high $t$

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

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 $E_{γ}$ =8.5 GeV

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

Exclusive $π^{+}$ electroproduction off the proton from low to high -t

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

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

Measurements of Non-Singlet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for $Q^{2} = 4$ $Ge V^{2}$

Proton Form Factor Ratio, $μ_{p} G_{E}^{p} / G_{M}^{p}$ from Double Spin Asymmetry