Search

Your search keyword '"Rozpedzik, D."' showing total 7 results
Start Over Author "Rozpedzik, D." Database Complementary Index
7 results on '"Rozpedzik, D."'

2. BRAND – exploring transverse polarization of electrons emitted in neutron decay: Feasibility demonstration experiment.

Author

Bodek, K., Choi, J., De Keukeleere, L., Dhanmeher, K., Engler, M., Gupta, G., Kozela, A., Lojek, K., Pysz, K., Ries, D., Rozpedzik, D., Severijns, N., Soldner, T., Yazdandoost, N., Young, A.R., and Zejma, J.

Subjects
ELECTRON emission, NEUTRONS, RADIOACTIVE decay, SCALAR field theory, STANDARD model (Nuclear physics)
Abstract

Neutron and nuclear beta decay correlation coefficients are sensitive to the exotic scalar and tensor interactions that are not included in the Standard Model (SM). The proposed experiment BRAND will measure simultaneously seven neutron correlation coefficients: H, L, N, R, S, U and V that depend on the transverse electron polarization – a quantity which vanishes in the SM. Five of these correlations: H, L, S, U and V were never attempted experimentally before. The expected impact of the proposed experiment is comparable to that of frequently measured "traditional" correlation coefficients (a, b, A, B, D) but offers completely different systematics and additional sensitivity to imaginary parts of the scalar and tensor couplings. In order to demonstrate the feasibility of the challenging techniques such as the event-by-event decay kinematics reconstruction together with the electron polarimetry a test setup was installed at the cold neutron beam line PF1B at the Laue-Langevin Institute, Grenoble, France. In this contribution, the results of the first run as well as plans for the run in Autumn 2021 will be discussed. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

3. BRAND – Search for BSM physics at TeV scale by exploring transverse polarization of electrons emitted in neutron decay.

Author

Jenke, T., Degenkolb, S., Jentschel, M., Nesvizhevsky, V.V., Rebreyend, D., Roccia, S., Soldner, T., Stutz, A., Zimmer, O., Bodek, K., De Keukeleere, L., Kolodziej, M., Kozela, A., Kuzniak, M., Lojek, K., Perkowski, M., Przybilski, H., Pysz, K., Rozpedzik, D., and Severijns, N.

Subjects
POLARIZATION (Electricity), NEUTRONS, STANDARD model (Nuclear physics), ELECTRONS, STATISTICAL correlation
Abstract

Neutron and nuclear beta decay correlation coefficients are linearly sensitive to the exotic scalar and tensor interactions that are not included in the Standard Model (SM). The proposed experiment will measure simultaneously 11 neutron correlation coefficients (a, a, B, D, H, L, N, R, S, U, V) where 7 of them (H, L, N, R, S, U, V) depend on the transverse electron polarization – a quantity that vanishes for the SM weak interaction. The neutron decay correlation coefficients H, L, S, U, V were never attempted experimentally before. The expected ultimate sensitivity of the proposed experiment that currently takes off on the cold neutron beamline PF1B at the Institut Laue-Langevin, Grenoble, France, is comparable to that of the planned electron spectrum shape measurements in neutron and nuclear β decays but offers completely different systematics and additional sensitivity to imaginary parts of the scalar and tensor couplings. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

4. Active compensation of magnetic field distortions based on vector spherical harmonics field description.

Author

Wyszyński, G., Bodek, K., Afach, S., Bison, G., Chowdhuri, Z., Daum, M., Franke, B., Komposch, S., Lauss, B., Ries, D., Zsigmond, G., Perkowski, M., Rozpedzik, D., Zejma, J., Fertl, M., Koss, P. A., Severijns, N., Wursten, E., Kirch, K., and Kozela, A.

Subjects
MAGNETIC fields, SPHERICAL harmonics, MAGNETOSTATICS
Abstract

An analytic solution to the magnetostatic inverse problem in the framework of vector spherical harmonic basis functions is presented. This formalism is used for the design of a spherical magnetic field compensation system and its performance is compared with an already existing rectangular coil system. The proposed set of spherical coils with 15 degrees of freedom achieves a shielding factor of 1000 or better in a large part of the volume enclosed by the coils for a dipolar type external perturbation. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

5. DEUTERON-DEUTERON COLLISION AT 160 MeV.

Author

KHATRI, G., PAROL, W., BODEK, K., CIEPAŁ, I., JAMROZ, B., KALANTAR-NAYESTANAKI, N., KISTRYN, ST., KŁOS, B., KOZELA, A., KULESSA, P., MAGIERA, A., MAZUMDAR, I., MESSCHENDORP, J. G., ROZPEDZIK, D., SKWIRA-CHALOT, I., STEPHAN, E., WILCZEK, A., WŃOCH, B., WRONSKA, A., and ZEJMA, J.

Subjects
COLLISIONS (Nuclear physics), DEUTERONS, SCATTERING (Physics), DETECTORS
Abstract

The experiment was carried out using BINA detector at KVI in Groningen. For the first time, an extensive analysis of the data collected in back part of the detector is presented, where a clusterization method is utilized for angular and energy information. We also present differential cross sections for the (dd → dpn) breakup reaction within dp quasi-free scattering limit and their comparison with first calculations based on Single Scattering Approximation (SSA) approach. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

6. THE CHIRAL LONG-RANGE TWO-PION EXCHANGE ELECTROMAGNETIC CURRENTS IN RADIATIVE NUCLEON-DEUTERON CAPTURE.

Author

Skibinski, R., Golak, J., Rozpedzik, D., Topolnicki, K., and Witała, H.

Subjects
CHIRALITY of nuclear particles, PIONS, ELECTROMAGNETIC fields, RADIATIVE collision, NUCLEAR cross sections, NUCLEAR forces (Physics)
Abstract

The nucleon-deuteron radiative capture process is investigated using the chiral nuclear potentials and the electromagnetic currents developed by the Bochum-Bonn group. While the strong interaction is taken up to the next-to-next-to-leading order, the electromagnetic current consists of a single nucleon current, the leading one-pion exchange one and is supplemented by contributions from the long-range two-pion exchange current at next-to-leading-order. The theoretical predictions for the cross sections as well as analyzing powers show strong dependence on the values of regularization parameters. Only small effects of the three-nucleon force and the long-range two-pion exchange current are observed. The dependence on the choice of regularization parameters results in a big theoretical uncertainty and clearly points to the necessity to include corrections from higher orders of the chiral expansion both for the nuclear forces and currents. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results