H. Bagdasaryan

activity

20012009

S = + 1

Baryon in Exclusive Photoproduction from the Deuteron

396 citations · 3.5k across the 46 of their papers we have counts for

collaborators

46 papers

hep-ex2009★ 111 cited

$π^{+}$ photoproduction on the proton for photon energies from 0.725 to 2.875 GeV

The CLAS Collaboration, M. Dugger, B. G. Ritchie +7

Differential cross sections for the reaction $γ p \to n π^{+}$ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.725…

hep-ex2008★ 1 cited

Beam Spin Asymmetries in DVCS with CLAS at 4 .8 GeV

G. Gavalian

We report measurements of the beam spin asymmetry in Deeply Virtual Compton Scattering (DVCS) at an electron beam energy of 4.8 GeV using the CLAS detector at the Thomas Jefferson…

nucl-ex2008★ 103 cited

A Precise Measurement of the Neutron Magnetic Form Factor GMn in the Few-GeV2 Region

J. Lachniet, A. Afanasev, H. Arenhövel +5

The neutron elastic magnetic form factor GMn has been extracted from quasielastic electron scattering data on deuterium with the CEBAF Large Acceptance Spectrometer (CLAS) at Jeffe…

hep-ex2008★ 66 cited

Measurement of unpolarized semi-inclusive pi+ electroproduction off the proton

CLAS Collaboration, M. Osipenko, M. Ripani +3

Semi-inclusive pi+ electroproduction on protons has been measured with the CLAS detector at Jefferson Lab. The measurement was performed on a liquid-hydrogen target using a 5.75 Ge…

hep-ex2008★ 36 cited

Search for the photo-excitation of exotic mesons in the pi+pi+pi- system

M. Nozar, C. Salgado, D. P. Weygand +2

A search for exotic mesons in the $π^{+} π^{+} π^{-}$ system photoproduced by the charge exchange reaction $γ p \to π^{+} π^{+} π^{-} (n)$ was carried out by the CLAS collaboration at Jef…

nucl-ex2008★ 76 cited

Electroexcitation of the Roper resonance for 1.7 < Q2 < 4.5 GeV2 in ep -> enpi+

I. G. Aznauryan, V. D. Burkert, W. Kim +2

The helicity amplitudes of the electroexcitation of the Roper resonance are extracted for 1.7 < Q2 < 4.5 GeV2 from recent high precision JLab-CLAS cross section and longitudinally…

nucl-ex2008★ 23 cited

First measurement of target and double spin asymmetries for polarized e- polarized p --> e p pi0 in the nucleon resonance region above the Delta(1232)

CLAS Collaboration, A. S. Biselli

The exclusive channel polarized proton(polarized e,e prime p)pi0 was studied in the first and second nucleon resonance regions in the Q2 range from 0.187 to 0.770 GeV2 at Jefferson…

nucl-ex2008★ 70 cited

Light Vector Mesons in the Nuclear Medium

M. H. Wood, R. Nasseripour, D. P. Weygand +5

The light vector mesons ( $ρ$ , $ω$ , and $ϕ$ ) were produced in deuterium, carbon, titanium, and iron targets in a search for possible in-medium modifications to the properties of the…

nucl-ex2008★ 54 cited

Moments of the Spin Structure Functions g_1^p and g_1^d for 0.05 < Q^2 < 3.0 GeV^2

Y. Prok, P. Bosted, V. D. Burkert +7

The spin structure functions g_1 for the proton and the deuteron have been measured over a wide kinematic range in x and Q2 using 1.6 and 5.7 GeV longitudinally polarized electrons…

nucl-ex2008★ 40 cited

Polarized Structure Function $σ_{L T^{'}}$ for $p (e, e^{'} K^{+}) Λ$ in the Nucleon Resonance Region

Rakhsha Nasseripour, Brian Raue, Daniel Carman +2

The first measurements of the polarized structure function $σ_{L T^{'}}$ for the reaction $p (e, e^{'} K^{+}) Λ$ in the nucleon resonance region are reported. Measurements are included fro…

hep-ex2007★ 194 cited

Deeply Virtual Compton Scattering Beam-Spin Asymmetries

F. X. Girod, R. A. Niyazov et al

The beam spin asymmetries in the hard exclusive electroproduction of photons on the proton (ep -> epg) were measured over a wide kinematic range and with high statistical accuracy.…

nucl-ex2007★ 63 cited

Cross sections and beam asymmetries for $\vev{e}p \to enπ^+$ in the nucleon resonance region for $1.7 \leq Q^{2} \leq 4.5 (G e V)^{2}$

K. Park, V. D. Burkert, W. Kim +1

The exclusive electroproduction process $e p \to e^{'} n π^{+}$ was measured in the range of the photon virtuality $Q^{2} = 1.7 - 4.5 Ge V^{2}$ , and the invariant mass range…

hep-ph2007★ 20 cited

A Bayesian analysis of pentaquark signals from CLAS data

The CLAS Collaboration, D. G. Ireland

We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a $Θ^{+}$ pentaquark, whilst the other found no such evidence. The unique fe…

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★ 19 cited

Evidence for a backward peak in the gamma+d->pi^0+d cross section near the eta threshold

Y. Ilieva, B. L. Berman, A. E. Kudryavtsev +2

High-quality cross sections for the reaction gamma+d->pi^0+d have been measured using the CLAS at Jefferson Lab over a wide energy range near and above the eta-meson photoproductio…

nucl-ex2007★ 40 cited

Cascade production in the reactions gamma p --> K+ K+ (X) and gamma p --> K^+ K^+ pi- (X)

L. Guo, D. P. Weygand, M. Battaglieri +3

Photoproduction of the cascade resonances has been investigated in the reactions $γ p \to K^{+} K^{+} (X)$ and $γ p \to K^{+} K^{+} π^{-} (X)$ . The mass split of the $Ξ$ doublet is measured to…

nucl-ex2007★ 42 cited

Experimental study of exclusive $^{2}$ H $(e, e^{'} p) n$ reaction mechanisms at high $Q^{2}$

K. S. Egiyan, the CLAS Collaboration

The reaction $^{2}$ H $(e, e^{'} p) n$ has been studied with full kinematic coverage for photon virtuality $1.75 < Q^{2} < 5.5$ GeV $^{2}$ . Comparisons of experimental data with theory indicat…

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 $…

hep-ex2006★ 104 cited

Measurement of the N to Delta(1232) Transition at High Momentum Transfer by pi0 Electroproduction

M. Ungaro, P. Stoler, I. Aznauryan +4

We report a new measurement of the exclusive electroproduction reaction gamma* p -> pi0 p to explore the evolution from soft non-perturbative physics to hard processes via the Q2 d…

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★ 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…

hep-ex2006★ 38 cited

Search for the Theta+ pentaquark in the gamma d -> Lambda n K+ reaction measured with CLAS

Clas Collaboration, S. Niccolai

For the first time, the reaction gamma d -> Lambda n K+ has been analyzed in order to search for the exotic pentaquark baryon Theta+(1540). The data were taken at Jefferson Lab, us…

hep-ex2006★ 94 cited

Search for the $Θ^{+}$ pentaquark in the reaction $γ d \to p K^{-} K^{+} n$

B. McKinnon, K. Hicks

A search for the \thp in the reaction $γ d \to p K^{-} K^{+} n$ was completed using the CLAS detector at Jefferson Lab. A study of the same reaction, published earlier, reported the observ…

hep-ex2005★ 78 cited

Search for $Θ^{+} (1540)$ pentaquark in high statistics measurement of $γ p \to K ˉ^{0} K^{+} n$ at CLAS

M. Battaglieri, R. De Vita, V. Kubarovsky +5

The exclusive reaction $γ p \to K ˉ^{0} K^{+} n$ was studied in the photon energy range between 1.6-3.8 GeV searching for evidence of the exotic baryon $Θ^{+} (1540) \to n K^{+}$ . The decay…