Hall Crannell

activity

20012008

S = + 1

Baryon in Exclusive Photoproduction from the Deuteron

396 citations · 2.6k across the 29 of their papers we have counts for

collaborators

29 papers

hep-ex2008★ 29 cited

First measurement of direct $f_{0} (980)$ photoproduction on the proton

CLAS Collaboration, M. Battaglieri, R. De Vita +1

We report on the results of the first measurement of exclusive $f_{0} (980)$ meson photoproduction on protons for $E_{γ} = 3.0 - 3.8$ GeV and $- t = 0.4 - 1.0$ GeV $^{2}$ . Data were collected w…

nucl-ex2008★ 38 cited

Electroproduction of p π^{+} π^{-} off protons at 0.2<Q^{2}<0.6 GeV^{2} and 1.3<W<1.57 GeV with CLAS

G. V. Fedotov, V. I. Mokeev, V. D. Burkert +5

This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process $e p \to e^{'} p π^{+} π^{-}$ . The data were collec…

hep-ex2008★ 59 cited

Exclusive $ρ^{0}$ electroproduction on the proton at CLAS

CLAS collaboration

The $e p \to e^{'} p ρ^{0}$ reaction has been measured, using the 5.754 GeV electron beam of Jefferson Lab and the CLAS detector. This represents the largest ever set of data for t…

nucl-ex2008★ 35 cited

Electroproduction of $ϕ (1020)$ mesons at $1.4 \leq Q^{2} \leq$ GeV $^{2}$ measured with the CLAS spectrometer

J. P. Santoro, E. S. Smith, M. Garcon +3

Electroproduction of exclusive $ϕ$ vector mesons has been studied with the CLAS detector in the kinematical range $1.4 \leq Q^{2} \leq 3.8$ GeV $^{2}$ , $0.0 \leq t^{'} \leq 3.6$ GeV$…

nucl-ex2007★ 7 cited

Ratios of 15N/12C and 4He/12C inclusive electroproduction cross sections in the nucleon resonance region

CLAS Collaboration, P. E. Bosted, R. Fersch

The (W,Q2)-dependence of the ratio of inclusive electron scattering cross sections for 15N/12C was determined in the kinematic range 0.8<W<2 GeV and 0.2<Q2<1 GeV2 using 2.285 GeV e…

nucl-ex2007★ 76 cited

Search for medium modification of the $ρ$ meson

R. Nasseripour, M. H. Wood, C. Djalali +5

The photoproduction of vector mesons on various nuclei has been studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory. The vector mesons, $ρ$ , $ω$ , a…

hep-ex2007★ 86 cited

$π^{0}$ photoproduction on the proton for photon energies from 0.675 to 2.875 GeV

M. Dugger, B. G. Ritchie, J. P. Ball +7

Differential cross sections for the reaction $γ p \to p π^{0}$ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.675…

nucl-ex2007★ 28 cited

First measurement of coherent $ϕ$ -meson photoproduction on deuteron at low energies

CLAS collaboration, T. Mibe, H. Gao +4

The cross section and decay angular distributions for the coherent ϕmeson photoproduction on the deuteron have been measured for the first time up to a squared four-momentum transf…

nucl-ex2007★ 36 cited

Cross Sections for the $γ p \to K^{* 0} Σ^{+}$ Reaction at $E_{γ} = 1.7 - 3.0$ GeV

I. Hleiqawi, K. Hicks, D. Carman +1

Differential cross sections for the reaction $γ p \to K^{* 0} Σ^{+}$ are presented at nine bins in photon energy in the range from 1.7 to 3.0 GeV. The \kstar was detected by its decay…

nucl-ex2006★ 161 cited

First Measurement of Beam-Recoil Observables Cx and Cz in Hyperon Photoproduction

R. Bradford, R. A. Schumacher, CLAS Collaboration

Spin transfer from circularly polarized real photons to recoiling hyperons has been measured for the reactions $γ + p \to K^{+} + Λ$ and $γ + p \to K^{+} + Σ^{0}$ . The data…

hep-ph2006★ 47 cited

Quark-Hadron Duality in Spin Structure Functions g1p and g1d

P. E. Bosted, K. V. Dharmawardane, G. E. Dodge +3

New measurements of the spin structure functions of the proton and deuteron g1p(x,Q2) and g1d(x,Q2) in the nucleon resonance region are compared with extrapolations of target-mass-…

hep-ex2006★ 56 cited

Search for the $Θ^{+}$ pentaquark in the reactions $γ p \to K ˉ^{0} K^{+} n$ and $γ p \to K ˉ^{0} K^{0} p$

R. De Vita, M. Battaglieri, V. Kubarovsky +9

The exclusive reactions $γ p \to K ˉ^{0} K^{+} n$ and $γ p \to K ˉ^{0} K^{0} p$ have been studied in the photon energy range 1.6--3.8 GeV, searching for evidence of the exotic baryon $…

nucl-ex2006★ 130 cited

Measurement of the $x$ - and $Q^{2}$ -Dependence of the Asymmetry $A_{1}$ on the Nucleon

K. V. Dharmawardane, S. E. Kuhn, P. Bosted +1

We report results for the virtual photon asymmetry $A_{1}$ on the nucleon from new Jefferson Lab measurements. The experiment, which used the CEBAF Large Acceptance Spectrometer and…

hep-ex2006★ 116 cited

Measurement of Deeply Virtual Compton Scattering with a Polarized Proton Target

S. Chen, H. Avakian, V. Burkert +2

The longitudinal target-spin asymmetry A_UL for the exclusive electroproduction of high energy photons was measured for the first time in p(e,e'pγ). The data have been accumulated…

hep-ex2006★ 13 cited

Search for $Θ^{++}$ Pentaquarks in the Exclusive Reaction $γ p \to K^{+} K^{-} p$

V. Kubarovsky, M. Battaglieri, R. De Vita +6

The reaction $γ p \to p K^{+} K^{-}$ was studied at Jefferson Lab with photon energies from 1.8 to 3.8 GeV using a tagged photon beam. The goal was to search for a $Θ^{++}$ pentaquark, a…

nucl-ex2006★ 66 cited

Single pi+ Electroproduction on the Proton in the First and Second Resonance Regions at 0.25GeV^2 < Q^2 < 0.65GeV^2 Using CLAS

H. Egiyan, I. G. Aznauryan, V. D. Burkert +5

The ep -> e'pi^+n reaction was studied in the first and second nucleon resonance regions in the 0.25 GeV^2 < Q^2 < 0.65 GeV^2 range using the CLAS detector at Thomas Jefferson Nati…

nucl-ex2005★ 278 cited

Measurement of 2- and 3-Nucleon Short Range Correlation Probabilities in Nuclei

K. S. Egiyan, N. B. Dashyan, M. M. Sargsian +3

The ratios of inclusive electron scattering cross sections of He4, C12 and Fe56 to He3 have been measured at 1 < x_B < 3. At Q^2 > 1.4 GeV^2, the ratios exhibit two separate platea…

hep-ex2005★ 61 cited

Beam-Helicity Asymmetries in Double-Charged-Pion Photoproduction on the Proton

CLAS Collaboration, S. Strauch, B. L. Berman

Beam-helicity asymmetries for the two-pion-photoproduction reaction gamma + p --> p pi+ pi- have been studied for the first time in the resonance region for center-of-mass energies…

hep-ex2005★ 37 cited

Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons

S. Taylor, G. S. Mutchler

The electromagnetic decays of the Sig0(1385) and Lambda(1520) hyperons were studied in photon-induced reactions gamma p -> K+ Lambda(1116)gamma in the CLAS detector at the Thomas J…

nucl-ex2004★ 49 cited

Measurement of the Polarized Structure Function $σ_{L T^{'}}$ for $p (e, e^{'} π^{+}) n$ in the $Δ (1232)$ Resonance Region

CLAS Collaboration, K. Joo, L. C. Smith

The polarized longitudinal-transverse structure function $σ_{L T^{'}}$ has been measured using the $p (e, e^{'} π^{+}) n$ reaction in the $Δ (1232)$ resonance region at $Q^{2} = 0.40$ and…

hep-ph2004★ 41 cited

Onset of asymptotic scaling in deuteron photodisintegration

P. Rossi

We investigate the transition from the nucleon-meson to quark-gluon description of the strong interaction using the photon energy dependence of the $d (γ, p) n$ differential cross sec…

hep-ex2003★ 396 cited

Observation of an Exotic $S = + 1$ Baryon in Exclusive Photoproduction from the Deuteron

S. Stepanyan, The CLAS collaboration

In an exclusive measurement of the reaction $γ d \to K^{+} K^{-} p n$ , a narrow peak that can be attributed to an exotic baryon with strangeness $S = + 1$ is seen in the $K^{+} n$ invariant m…

nucl-ex2003★ 182 cited

Hyperon Photoproduction in the Nucleon Resonance Region

J. W. C. McNabb, R. A. Schumacher, L. Todor

Cross-sections and recoil polarizations for the reactions gamma + p --> K^+ + Lambda and gamma + p --> K^+ + Sigma^0 have been measured with high statistics and with good angular c…

nucl-ex2003★ 163 cited

Observation of Nuclear Scaling in the $A (e, e^{'})$ Reaction at $x_{B} >$ 1

K. Sh Egiyan

The ratios of inclusive electron scattering cross sections of $^{4}$ He, $^{12}$ C, and $^{56}$ Fe to $^{3}$ He have been measured for the first time. It is shown that these ratios are ind…

First measurement of direct f0​(980) photoproduction on the proton

Electroproduction of p π^{+} π^{-} off protons at 0.2<Q^{2}<0.6 GeV^{2} and 1.3<W<1.57 GeV with CLAS

Exclusive ρ0 electroproduction on the proton at CLAS

Electroproduction of ϕ(1020) mesons at 1.4≤Q2≤ GeV2 measured with the CLAS spectrometer

Ratios of 15N/12C and 4He/12C inclusive electroproduction cross sections in the nucleon resonance region

Search for medium modification of the ρ meson

π0 photoproduction on the proton for photon energies from 0.675 to 2.875 GeV

First measurement of coherent ϕ-meson photoproduction on deuteron at low energies

Cross Sections for the γp→K∗0Σ+ Reaction at Eγ​=1.7−3.0 GeV