Publications (16)
Early Results from the Qweak Experiment
D. Androic, D. S. Armstrong, A. Asaturyan +94
A subset of results from the recently completed Jefferson Lab Qweak experiment are reported. This experiment, sensitive to physics beyond the Standard Model, exploits the small par…
Probing for high momentum protons in He via the reaction
S. Iqbal, F. Benmokhtar, M. Ivanov +107
Experimental cross sections for the reaction up to a missing momentum of 0.632 GeV/ at and =2(GeV/) are reported. The data are compared to…
Precision Measurement of the Weak Charge of the Proton
D. Androic, D. S. Armstrong, A. Asaturyan +96
The fields of particle and nuclear physics have undertaken extensive programs to search for evidence of physics beyond that explained by current theories. The observation of the Hi…
Search for three-nucleon short-range correlations in light nuclei
Z. Ye, P. Solvignon, D. Nguyen +100
We present new data probing short-range correlations (SRCs) in nuclei through the measurement of electron scattering off high-momentum nucleons in nuclei. The inclusive 4He/3He cro…
Measurement of the Neutron Radius of 208Pb Through Parity-Violation in Electron Scattering
S. Abrahamyan, Z. Ahmed, H. Albataineh +132
We report the first measurement of the parity-violating asymmetry A_PV in the elastic scattering of polarized electrons from 208Pb. A_PV is sensitive to the radius of the neutron d…
First Determination of the Weak Charge of the Proton
Qweak Collaboration, D. Androic, D. S. Armstrong +95
The Qweak experiment has measured the parity-violating asymmetry in polarized e-p elastic scattering at Q^2 = 0.025(GeV/c)^2, employing 145 microamps of 89% longitudinally polarize…
Probing the Repulsive Core of the Nucleon-Nucleon Interaction via the 4He(e,e'pN) Triple-Coincidence Reaction
I. Korover N. Muangma, O. Hen, R. Shneor +115
We studied simultaneously the 4He(e,e'p), 4He(e,e'pp), and 4He(e,e'pn) reactions at Q^2=2 [GeV/c]2 and x_B>1, for a (e,e'p) missing-momentum range of 400 to 830 MeV/c. The knocked-…
An initial study of mesons and baryons containing strange quarks with GlueX
The GlueX Collaboration, A. AlekSejevs, S. Barkanova +97
The primary motivation of the GlueX experiment is to search for and ultimately study the pattern of gluonic excitations in the meson spectrum produced in collisions. Recent l…
Novel observation of isospin structure of short-range correlations in calcium isotopes
D. Nguyen, Z. Ye, P. Aguilera +101
Short Range Correlations (SRCs) have been identified as being responsible for the high momentum tail of the nucleon momentum distribution, n(k). Hard, short-range interactions of n…
A study of decays to strange final states with GlueX in Hall D using components of the BaBar DIRC
The GlueX Collaboration, M. Dugger, B. Ritchie +103
We propose to enhance the kaon identification capabilities of the GlueX detector by constructing an FDIRC (Focusing Detection of Internally Reflected Cherenkov) detector utilizing…
Electroexcitation of the at low momentum transfer
A. Blomberg, D. Anez, N. Sparveris +92
We report on new p measurements at the resonance at the low momentum transfer region. The mesonic cloud dynamics is predicted to be dominant…
New Measurements of the Transverse Beam Asymmetry for Elastic Electron Scattering from Selected Nuclei
The HAPPEX, PREX Collaborations, : +195
We have measured the beam-normal single-spin asymmetry in the elastic scattering of 1-3 GeV transversely polarized electrons from H and for the first time from He, $^…
Measuring short-range correlations and quasi-elastic cross sections in A(e,e') at x>1 and modest Q
Y. P. Zhang, Z. H. Ye, D. Nguyen +96
We present results from the Jefferson Lab E08-014 experiment, investigating short-range correlations (SRC) through measurements of inclusive quasi-elastic scattering from H, $^…
First Determination of the 27Al Neutron Distribution Radius from a Parity-Violating Electron Scattering Measurement
QWeak Collaboration, D. Androic, D. S. Armstrong +91
We report the first measurement of the parity-violating elastic electron scattering asymmetry on 27Al. The 27Al elastic asymmetry is A_PV = 2.16 +- 0.11 (stat) +- 0.16 (syst) ppm,…
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…
A study of meson and baryon decays to strange final states with GlueX in Hall D (A proposal to the 39th Jefferson Lab Program Advisory Committee)
The GlueX Collaboration, M. Dugger, B. Ritchie +76
The primary motivation of the GlueX experiment is to search for and ultimately study the pattern of gluonic excitations in the meson spectrum produced in gamma p collisions. Recent…