Measurement of the parity-odd angular distribution of gamma rays from polarized neutron capture on Cl-35


Por: Fomin, N., Alarcon, R., Alonzi, L., Askanazi, E., Baessler, S., Balascuta, S., Barron-Palos, L., Barzilov, A., Blyth, D., Bowman, J. D., Birge, N., Calarco, J. R., Chupp, T. E., Cianciolo, V, Coppola, C. E., Crawford, C. B., Craycraft, K., Evans, D., Fieseler, C., Frlez, E., Fry, J., Garishvili, I, Gericke, M. T. W., Gillis, R. C., Grammer, K. B., Greene, G. L., Hall, J., Hamblen, J., Hayes, C., Iverson, E. B., Kabir, M. L., Kucuker, S., Lauss, B., Mahurin, R., McCrea, M., Maldonado-Velazquez, M., Masuda, Y., Mei, J., Milburn, R., Mueller, P. E., Musgrave, M., Nann, H., Novikov, I, Parsons, D., Penttila, I, S., Pocanic, D., Ramirez-Morales, A., Root, M., Salas-Bacci, A., Santra, S., Schroeder, S., Scott, E., Seo, P-N, Sharapov, I, E., Simmons, F., Snow, W. M., Sprow, A., Stewart, J., Tang, E., Tang, Z., Tong, X., Turkoglu, D. J., Whitehead, R., Wilburn, W. S.

Publicada: 27 jul 2022
Categoría: Nuclear and high energy physics

Resumen:
We report a measurement of two energy-weighted gamma cascade angular distributions from polarized slow neutron capture on the Cl-35 nucleus, one parity-odd correlation proportional to (s) over right arrown.(k) over right arrow (gamma) and one parity-even correlation proportional to (s) over right arrown.(k) over right arrown x (k) over right arrow (gamma). A parity-violating asymmetry can appear in this reaction due to the weak nucleon-nucleon interaction, which mixes opposite parity S-and P-wave levels in the excited compound Cl-36 nucleus formed upon slow neutron capture. If parity-violating (PV) and parity-conserving (PC) terms both exist, the measured differential cross section can be related to them via d sigma sigma/d Omega proportional to 1 +A(gamma,PV) cos theta +A(gamma,PC) sin theta. The PV and PC asymmetries for energy-weighted gamma cascade angular distributions for polarized slow neutron capture on Cl-35 averaged over the neutron energies from 2.27-9.53 meV were measured to be A(gamma,PV) = (-23.9 +/- 0.7) x 10(-6) and A(gamma,PC) = (0.1 +/- 0.7) x 10(-6). These results are consistent with previous experimental results. Systematic errors were quantified and shown to be small compared to the statistical error. These asymmetries in the angular distributions of the gamma rays emitted from the capture of polarized neutrons in Cl-35 were used to verify the operation and data analysis procedures for the NPDGamma experiment, which measured the parity-odd asymmetry in the angular distribution of gamma s from polarized slow neutron capture on protons.

Filiaciones:
Fomin, N.:
 (Corresponding Author), Univ Tennessee, Knoxville, TN 37996 USA

 (Corresponding Author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA

 Univ Tennessee, Knoxville, TN 37996 USA

 Los Alamos Natl Lab, Los Alamos, NM 87545 USA

Alarcon, R.:
 Arizona State Univ, Tempe, AZ 85287 USA

Alonzi, L.:
 Univ Virginia, Charlottesville, VA 22904 USA

Askanazi, E.:
 Univ Virginia, Charlottesville, VA 22904 USA

Baessler, S.:
 Univ Virginia, Charlottesville, VA 22904 USA

 Penttila, S

Balascuta, S.:
 Horia Hulubei Natl Inst Phys & Nucl Engn, Magurele 077125, Romania

Barron-Palos, L.:
 Univ Nacl Autonoma Mexico, Inst Fis, Apartado Postal 20-364, Mexico City 01000, DF, Mexico

Barzilov, A.:
 Univ Nevada, Las Vegas, NV 89154 USA

Blyth, D.:
 Argonne Natl Lab, High Energy Phys Div, Argonne, IL 60439 USA

Bowman, J. D.:
 Penttila, S

Birge, N.:
 Univ Tennessee, Knoxville, TN 37996 USA

Calarco, J. R.:
 Univ New Hampshire, Durham, NH 03824 USA

Chupp, T. E.:
 Univ Michigan, Ann Arbor, MI 48109 USA

Cianciolo, V:
 Penttila, S

Coppola, C. E.:
 Univ Tennessee, Knoxville, TN 37996 USA

Crawford, C. B.:
 Univ Kentucky, Lexington, KY 40506 USA

Craycraft, K.:
 Univ Virginia, Charlottesville, VA 22904 USA

 Indiana Univ, Bloomington, IN 47405 USA

Evans, D.:
 Univ Virginia, Charlottesville, VA 22904 USA

 Indiana Univ, Bloomington, IN 47405 USA

Fieseler, C.:
 Univ Kentucky, Lexington, KY 40506 USA

Frlez, E.:
 Univ Virginia, Charlottesville, VA 22904 USA

Fry, J.:
 Univ Virginia, Charlottesville, VA 22904 USA

 Indiana Univ, Bloomington, IN 47405 USA

 Eastern Kentucky Univ, Richmond, KY 40475 USA

Garishvili, I:
 Univ Tennessee, Knoxville, TN 37996 USA

 Penttila, S

Gericke, M. T. W.:
 Univ Manitoba, Winnipeg, MB R3T 2N2, Canada

Gillis, R. C.:
 Penttila, S

 Indiana Univ, Bloomington, IN 47405 USA

Grammer, K. B.:
 Univ Tennessee, Knoxville, TN 37996 USA

 Penttila, S

Greene, G. L.:
 Univ Tennessee, Knoxville, TN 37996 USA

 Penttila, S

Hall, J.:
 Univ Virginia, Charlottesville, VA 22904 USA

Hamblen, J.:
 Univ Tennessee, Chattanooga, TN 37403 USA

Hayes, C.:
 Univ Tennessee, Knoxville, TN 37996 USA

 North Carolina State Univ, Phys Dept, Raleigh, NC 27695 USA

Iverson, E. B.:
 Penttila, S

Kabir, M. L.:
 Univ Kentucky, Lexington, KY 40506 USA

 Mississippi State Univ, Mississippi State, MS 39759 USA

Kucuker, S.:
 Univ Tennessee, Knoxville, TN 37996 USA

 Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA

Lauss, B.:
 Paul Scherrer Inst, CH-5232 Villigen, Switzerland

Mahurin, R.:
 Middle Tennessee State Univ, Murfreesboro, TN 37132 USA

McCrea, M.:
 Univ Kentucky, Lexington, KY 40506 USA

 Univ Manitoba, Winnipeg, MB R3T 2N2, Canada

Maldonado-Velazquez, M.:
 Univ Nacl Autonoma Mexico, Inst Fis, Apartado Postal 20-364, Mexico City 01000, DF, Mexico

Masuda, Y.:
 High Energy Accelerator Res Org KEK, Tsukuba 3050801, Japan

Mei, J.:
 Indiana Univ, Bloomington, IN 47405 USA

Milburn, R.:
 Univ Kentucky, Lexington, KY 40506 USA

Mueller, P. E.:
 Penttila, S

Musgrave, M.:
 MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

Nann, H.:
 Indiana Univ, Bloomington, IN 47405 USA

Novikov, I:
 Western Kentucky Univ, Bowling Green, KY 42101 USA

Parsons, D.:
 Univ Tennessee, Chattanooga, TN 37403 USA

Pocanic, D.:
 Univ Virginia, Charlottesville, VA 22904 USA

Ramirez-Morales, A.:
 Univ Nacl Autonoma Mexico, Inst Fis, Apartado Postal 20-364, Mexico City 01000, DF, Mexico

Root, M.:
 Univ Virginia, Charlottesville, VA 22904 USA

Salas-Bacci, A.:
 Univ Virginia, Charlottesville, VA 22904 USA

Santra, S.:
 Bhabha Atom Res Ctr, Mumbai 400085, Maharashtra, India

Schroeder, S.:
 Univ Virginia, Charlottesville, VA 22904 USA

 Saarland Univ, Inst Expt Ophthalmol, Kirrberger Str 100,Bldg 22, D-66424 Homburg, Germany

Scott, E.:
 Univ Tennessee, Knoxville, TN 37996 USA

Seo, P-N:
 Univ Virginia, Charlottesville, VA 22904 USA

 Triangle Univ Nucl Lab, Durham, NC 27708 USA

Simmons, F.:
 Univ Kentucky, Lexington, KY 40506 USA

Snow, W. M.:
 Indiana Univ, Bloomington, IN 47405 USA

Sprow, A.:
 Univ Kentucky, Lexington, KY 40506 USA

Stewart, J.:
 Univ Tennessee, Chattanooga, TN 37403 USA

Tang, E.:
 Univ Kentucky, Lexington, KY 40506 USA

Tang, Z.:
 Los Alamos Natl Lab, Los Alamos, NM 87545 USA

 Indiana Univ, Bloomington, IN 47405 USA

Tong, X.:
 I , Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

Turkoglu, D. J.:
 NIST, Gaithersburg, MD 20899 USA

Whitehead, R.:
 Univ Tennessee, Knoxville, TN 37996 USA

Wilburn, W. S.:
 Los Alamos Natl Lab, Los Alamos, NM 87545 USA
ISSN: 24699985
Editorial
AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA, Estados Unidos America
Tipo de documento: Article
Volumen: 106 Número: 1
Páginas:
WOS Id: 000836847400004
imagen Green Submitted, All Open Access; Green

MÉTRICAS