التفاصيل البيبلوغرافية
| العنوان: |
Measurement of the parity-violating asymmetry in inclusive electroproduction of π- near the Δ0 resonance. |
| المؤلفون: |
Androić D; Department of Physics, University of Zagreb, Zagreb HR-41001, Croatia., Armstrong DS, Arvieux J, Bailey SL, Beck DH, Beise EJ, Benesch J, Benmokhtar F, Bimbot L, Birchall J, Bosted P, Breuer H, Capuano CL, Chao YC, Coppens A, Davis CA, Ellis C, Flores G, Franklin G, Furget C, Gaskell D, Gericke MT, Grames J, Guillard G, Hansknecht J, Horn T, Jones MK, King PM, Korsch W, Kox S, Lee L, Liu J, Lung A, Mammei J, Martin JW, McKeown RD, Micherdzinska A, Mihovilovic M, Mkrtchyan H, Muether M, Page SA, Papavassiliou V, Pate SF, Phillips SK, Pillot P, Pitt ML, Poelker M, Quinn B, Ramsay WD, Real JS, Roche J, Roos P, Schaub J, Seva T, Simicevic N, Smith GR, Spayde DT, Stutzman M, Suleiman R, Tadevosyan V, van Oers WT, Versteegen M, Voutier E, Vulcan W, Wells SP, Williamson SE, Wood SA |
| مؤلفون مشاركون: |
G0 Collaboration |
| المصدر: |
Physical review letters [Phys Rev Lett] 2012 Mar 23; Vol. 108 (12), pp. 122002. Date of Electronic Publication: 2012 Mar 20. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: American Physical Society Country of Publication: United States NLM ID: 0401141 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1079-7114 (Electronic) Linking ISSN: 00319007 NLM ISO Abbreviation: Phys Rev Lett Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: |
Original Publication: New York : American Physical Society |
| مستخلص: |
The parity-violating (PV) asymmetry of inclusive π- production in electron scattering from a liquid deuterium target was measured at backward angles. The measurement was conducted as a part of the G0 experiment, at a beam energy of 360 MeV. The physics process dominating pion production for these kinematics is quasifree photoproduction off the neutron via the Δ0 resonance. In the context of heavy-baryon chiral perturbation theory, this asymmetry is related to a low-energy constant d(Δ)- that characterizes the parity-violating γNΔ coupling. Zhu et al. calculated d(Δ)- in a model benchmarked by the large asymmetries seen in hyperon weak radiative decays, and predicted potentially large asymmetries for this process, ranging from A(γ)-=-5.2 to +5.2 ppm. The measurement performed in this work leads to A(γ)-=-0.36±1.06±0.37±0.03 ppm (where sources of statistical, systematic and theoretical uncertainties are included), which would disfavor enchancements considered by Zhu et al. proportional to V(ud)/V(us). The measurement is part of a program of inelastic scattering measurements that were conducted by the G0 experiment, seeking to determine the N-Δ axial transition form factors using PV electron scattering. |
| تواريخ الأحداث: |
Date Created: 20120501 Date Completed: 20120730 Latest Revision: 20120430 |
| رمز التحديث: |
20231215 |
| DOI: |
10.1103/PhysRevLett.108.122002 |
| PMID: |
22540573 |
| قاعدة البيانات: |
MEDLINE |
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