R. Fersch

activity

20052024

most citedModified Structure of Protons and Neutrons in Correlated Pairs

154 citations · 2.2k across the 54 of their papers we have counts for

collaborators

53 papers

nucl-ex2024★ 2 cited

Measurement of the nucleon spin structure functions for 0.01< $Q^{2}$ <1 GeV $^{2}$ using CLAS

A. Deur, S. E. Kuhn, M. Ripani +147

The spin structure functions of the proton and the deuteron were measured during the EG4 experiment at Jefferson Lab in 2006. Data were collected for longitudinally polarized elect…

nucl-ex2021★ 28 cited

Measurement of charged-pion production in deep-inelastic scattering off nuclei with the CLAS detector

S. Moran, R. Dupre, H. Hakobyan +141

Background: Energetic quarks in nuclear DIS propagate through the nuclear medium. Processes that are believed to occur inside nuclei include quark energy loss through medium-stimul…

hep-ex2021★ 34 cited

First-time measurement of Timelike Compton Scattering

P. Chatagnon, S. Niccolai, S. Stepanyan +146

We present the first measurement of the Timelike Compton Scattering process, $γ p \to p^{'} γ^{*} (γ^{*} \to e^{+} e^{-})$ , obtained with the CLAS12 detector at Jefferson Lab. The photon b…

hep-ex2021

Improved $Λ p$ 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…

nucl-ex2021★ 25 cited

Measurement of the proton spin structure at long distances

X. Zheng, A. Deur, H. Kang +148

Measuring the spin structure of protons and neutrons tests our understanding of how they arise from quarks and gluons, the fundamental building blocks of nuclear matter. At long di…

hep-ex2020★ 14 cited

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…

nucl-ex2020★ 154 cited

Modified Structure of Protons and Neutrons in Correlated Pairs

B. Schmookler, M. Duer, A. Schmidt +6

The atomic nucleus is made of protons and neutrons (nucleons), that are themselves composed of quarks and gluons. Understanding how the quark-gluon structure of a nucleon bound in…

nucl-ex2020★ 11 cited

First measurement of direct photoproduction of the $a_{2} (1320)^{0}$ meson on the proton

A. Celentano, M. Battaglieri, R. De Vita +4

We present the first measurement of the exclusive reaction $γ p \to a_{2} (1320)^{0} p$ in the photon energy range $3.5$ - $5.5$ GeV and four-momentum transfer squared $0.2<-t<2…

hep-ex2018★ 14 cited

Measurement of Unpolarized and Polarized Cross Sections for Deeply Virtual Compton Scattering on the Proton at Jefferson Laboratory with CLAS

N. Hirlinger Saylor, B. Guegan, V. D. Burkert +8

This paper reports the measurement of polarized and unpolarized cross sections for the ep -> e'p' reaction, which is comprised of Deeply Virtual Compton Scattering (DVCS) and Bethe…

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-ex2018★ 58 cited

The center of mass motion of short-range correlated nucleon pairs studied via the A(e,e'pp) reaction

E. O. Cohen, O. Hen, E. Piasetzky +6

Short-Range Correlated (SRC) nucleon pairs are a vital part of the nucleus, accounting for almost all nucleons with momentum greater than the Fermi momentum (kF). A fundamental cha…

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★ 43 cited

First Exclusive Measurement of Deeply Virtual Compton Scattering off $^{4}$ He: Toward the 3D Tomography of Nuclei

M. Hattawy, N. A. Baltzell, R. Dupré +157

We report on the first measurement of the beam-spin asymmetry in the exclusive process of coherent deeply virtual Compton scattering off a nucleus. The experiment used the 6 GeV el…

nucl-ex2017★ 55 cited

Determination of the Proton Spin Structure Functions for 0.05 < Q^2 < 5 GeV^2 using CLAS

Robert Fersch, Nevzat Guler, Peter Bosted +7

We present the results of our final analysis of the full data set of g_1^p(Q^2), the spin structure function of the proton, collected using CLAS at Jefferson Lab in 2000-2001. Pola…

nucl-ex2017★ 26 cited

Differential Cross Section Measurements for $γ n \to π^{-} p$ Above the First Nucleon Resonance Region

P. T. Mattione, D. S. Carman, I. I. Strakovsky +145

The quasi-free $γ d \to π^{-} p (p)$ differential cross section has been measured with CLAS at photon beam energies $E_{γ}$ from 0.445 GeV to 2.510 GeV (corresponding to $W$ from 1.311 Ge…

nucl-ex2017★ 38 cited

Measurements of $e p \to e^{'} π^{+} π^{-} p^{'}$ Cross Sections with CLAS at $1.40 < W < 2.0$ GeV and $2.0 < Q^{2} < 5.0$ GeV $^{2}$

E. L. Isupov, V. D. Burkert, D. S. Carman +5

This paper reports new exclusive cross sections for $e p \to e^{'} π^{+} π^{-} p^{'}$ using the CLAS detector at Jefferson Laboratory. These results are presented for the first time at photo…

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-ex2016★ 9 cited

Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^{2} > 1$ GeV $^{2}$ . II. $e p \to e π^{0} p$

P. E. Bosted, A. Kim, K. P. Adhikari +152

Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive $π^{0}$ electroproduction reaction $γ^{*} p \to p π^{0}$ , expanding an analysis of…

nucl-ex2016★ 10 cited

Measurement of Target and Double-spin Asymmetries for the $e p \to e π^{+} (n)$ Reaction in the Nucleon Resonance Region at Low $Q^{2}$

X. Zheng, K. P. Adhikari, P. Bosted +147

We report measurements of target- and double-spin asymmetries for the exclusive channel $e p \to e π^{+} (n)$ in the nucleon resonance region at Jefferson Lab using the CEBAF…

nucl-ex2016★ 6 cited

Target and Beam-Target Spin Asymmetries in Exclusive $π^{+}$ and $π^{-}$ Electroproduction with 1.6 to 5.7 GeV Electrons

P. E. Bosted, A. S. Biselli, S. Careccia +159

Beam-target double spin asymmetries and target single-spin asymmetries in exclusive $π^{+}$ and $π^{-}$ electroproduction were obtained from scattering of 1.6 to 5.7 GeV longitudinally…

nucl-ex2016★ 63 cited

Measurement of two-photon exchange effect by comparing elastic $e^{\pm} p$ cross sections

D. Rimal, D. Adikaram, B. A. Raue +142

[Background] The electromagnetic form factors of the proton measured by unpolarized and polarized electron scattering experiments show a significant disagreement that grows with th…

nucl-ex2015★ 20 cited

Target and Double Spin Asymmetries of Deeply Virtual $π^{0}$ Production with a Longitudinally Polarized Proton Target and CLAS

A. Kim, H. Avakian, V. Burkert +126

The target and double spin asymmetries of the exclusive pseudoscalar channel $e p \to e p π^{0}$ were measured for the first time in the deep-inelastic regime using a longitudi…

Measurement of the nucleon spin structure functions for 0.01<Q2<1 GeV2 using CLAS

Measurement of charged-pion production in deep-inelastic scattering off nuclei with the CLAS detector

First-time measurement of Timelike Compton Scattering

Improved Λp Elastic Scattering Cross Sections Between 0.9 and 2.0 GeV/c and Connections to the Neutron Star Equation of State

Measurement of the proton spin structure at long distances

Beam spin asymmetry in semi-inclusive electroproduction of a hadron pair

Modified Structure of Protons and Neutrons in Correlated Pairs

First measurement of direct photoproduction of the a2​(1320)0 meson on the proton

Measurement of Unpolarized and Polarized Cross Sections for Deeply Virtual Compton Scattering on the Proton at Jefferson Laboratory with CLAS

First results on nucleon resonance photocouplings from the γp→π+π−p reaction

Beam-Target Helicity Asymmetry E in K0Λ and K0Σ0 Photoproduction on the Neutron

The center of mass motion of short-range correlated nucleon pairs studied via the A(e,e'pp) reaction

Semi-Inclusive π0​ target and beam-target asymmetries from 6 GeV electron scattering with CLAS

Measurement of the helicity asymmetry E in ω→π+π−π0 photoproduction

First Exclusive Measurement of Deeply Virtual Compton Scattering off 4He: Toward the 3D Tomography of Nuclei

Determination of the Proton Spin Structure Functions for 0.05 < Q^2 < 5 GeV^2 using CLAS

Differential Cross Section Measurements for γn→π−p Above the First Nucleon Resonance Region

Measurements of ep→e′π+π−p′ Cross Sections with CLAS at 1.40<W<2.0 GeV and 2.0<Q2<5.0 GeV2

The Beam-Target Helicity Asymmetry for γ​n→π−p in the {\bf{N∗} Resonance Region

Target and beam-target spin asymmetries in exclusive pion electroproduction for Q2>1 GeV2. II. ep→eπ0p

Measurement of Target and Double-spin Asymmetries for the ep​→eπ+(n) Reaction in the Nucleon Resonance Region at Low Q2

Target and Beam-Target Spin Asymmetries in Exclusive π+ and π− Electroproduction with 1.6 to 5.7 GeV Electrons

Measurement of two-photon exchange effect by comparing elastic e±p cross sections

Target and Double Spin Asymmetries of Deeply Virtual π0 Production with a Longitudinally Polarized Proton Target and CLAS