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3 results on '"D. Scielzo, N."'

1. One-nucleon pickup reactions and compound-nuclear decays

Author

E. Escher J., T. Burke J., J. Casperson R., O. Hughes R., and D. Scielzo N.

Subjects
Physics, QC1-999
Abstract

One-nucleon transfer reactions, long used as a tool to study the structure of nuclei, are potentially valuable for determining reaction cross sections indirectly. This is significant, as many reactions of interest to astrophysics and other applications involve short-lived isotopes and cannot be measured directly. We describe a procedure for obtaining constraints for calculations of neutron capture cross sections using observables from experiments with transfer reactions. As a first step toward demonstrating the method, we outline the theory developments used to properly describe the production of the compound nucleus 88Y* via the one-nucleon pickup reaction 89Y(p,d)88Y* and test the description with data from a recent experiment. We indicate how this development can be used to extract the unknown 87Y(n,γ) cross section from 89Y(p,dγ) data. The example illustrates a more generally applicable method for determining unknown cross sections via a combination of theory and transfer (or inelastic scattering) experiments.

Published
2018
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2. CUORE and CUORE-0 experiments

Author

Copello, S., Alduino, C., Alfonso, K., R. Artusa, D., T. Avignone, F., Azzolini, O., I. Banks, T., Bari, G., W. Beeman, J., Bellini, F., Bersani, A., Biassoni, M., Brofferio, C., Bucci, C., Camacho, A., Caminata, A., Canonica, L., G. Cao, X., Capelli, S., Cappelli, L., Carbone, L., Cardani, L., Carniti, P., Casali, N., Cassina, L., Chiesa, D., Chott, N., Clemenza, M., Cosmelli, C., Cremonesi, O., J. Creswick, R., S. Cushman, J., D'Addabbo, A., Dafinei, I., J. Davis, C., Dell'oro, S., M. Deninno, M., Di Domizio, S., L. Di Vacri, M., Drobizhev, A., Q. Fang, D., Faverzani, M., Feintzeig, J., Fernandes, G., Ferri, E., Ferroni, F., Fiorini, E., A. Franceschi, M., J. Freedman, S., K. Fujikawa, B., Giachero, A., Gironi, L., Giuliani, A., Gladstone, L., Gorla, P., Gotti, C., D. Gutierrez, T., E. Haller, E., Han, K., Hansen, E., M. Heeger, K., Hennings-Yeomans, R., P. Hickerson, K., Z. Huang, H., Kadel, R., Keppel, G., G. Kolomensky, Yu., Leder, A., Ligi, C., E. Lim, K., Liu, X., G. Ma, Y., Maino, M., Marini, L., Martinez, M., H. Maruyama, R., Mei, Y., Moggi, N., Morganti, S., J. Mosteiro, P., Napolitano, T., Nones, C., B. Norman, E., Nucciotti, A., O'Donnell, T., Orio, F., L. Ouellet, J., E. Pagliarone, C., Pallavicini, M., Palmieri, V., Pattavina, L., Pavan, M., Pessina, G., Pettinacci, V., Piperno, G., Pira, C., Pirro, S., Pozzi, S., Previtali, E., Rosenfeld, C., Rusconi, C., Sangiorgio, S., Santone, D., D. Scielzo, N., Singh, V., Sisti, M., R. Smith, A., Taffarello, L., Tenconi, M., Terranova, F., Tomei, C., Trentalange, S., Vignati, M., L. Wagaarachchi, S., S. Wang, B., W. Wang, H., Wilson, J., A. Winslow, L., Wise, T., Woodcraft, A., Zanotti, L., Q. Zhang, G., X. Zhu, B., Zimmermann, S., Zucchelli, S., Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Copello, S, Alduino, C, Alfonso, K, Artusa, D, Avignone, F, Azzolini, O, Banks, T, Bari, G, Beeman, J, Bellini, F, Bersani, A, Biassoni, M, Brofferio, C, Bucci, C, Camacho, A, Caminata, A, Canonica, L, Cao, X, Capelli, S, Cappelli, L, Carbone, L, Cardani, L, Carniti, P, Casali, N, Cassina, L, Chiesa, D, Chott, N, Clemenza, M, Cosmelli, C, Cremonesi, O, Creswick, R, Cushman, J, D'Addabbo, A, Dafinei, I, Davis, C, Dell'Oro, S, Deninno, M, Di Domizio, S, Di Vacri, M, Drobizhev, A, Fang, D, Faverzani, M, Feintzeig, J, Fernandes, G, Ferri, E, Ferroni, F, Fiorini, E, Franceschi, M, Freedman, S, Fujikawa, B, Giachero, A, Gironi, L, Giuliani, A, Gladstone, L, Gorla, P, Gotti, C, Gutierrez, T, Haller, E, Han, K, Hansen, E, Heeger, K, Hennings Yeomans, R, Hickerson, K, Huang, H, Kadel, R, Keppel, G, Kolomensky, Y, Leder, A, Ligi, C, Lim, K, Liu, X, Ma, Y, Maino, M, Marini, L, Martinez, M, Maruyama, R, Mei, Y, Moggi, N, Morganti, S, Mosteiro, P, Napolitano, T, Nones, C, Norman, E, Nucciotti, A, O'Donnell, T, Orio, F, Ouellet, J, Pagliarone, C, Pallavicini, M, Palmieri, V, Pattavina, L, Pavan, M, Pessina, G, Pettinacci, V, Piperno, G, Pira, C, Pirro, S, Pozzi, S, Previtali, E, Rosenfeld, C, Rusconi, C, Sangiorgio, S, Santone, D, Scielzo, N, Singh, V, Sisti, M, Smith, A, Taffarello, L, Tenconi, M, Terranova, F, Tomei, C, Trentalange, S, Vignati, M, Wagaarachchi, S, Wang, B, Wang, H, Wilson, J, Winslow, L, Wise, T, Woodcraft, A, Zanotti, L, Zhang, G, Zhu, B, Zimmermann, S, Zucchelli, S, and Département de Physique des Particules (ex SPP) (DPhP)

Subjects
Cryogenics, CUORE-0 Experiment, CUORE Experiment, Double Beta Decay: 0 neutrino, Dark Matter, Physics and Astronomy (miscellaneous), Bolometer, Instruments and Instrumentation, CUORE-0 Experiment, Dark Matter, Double Beta Decay: 0 neutrino, Astronomy and Astrophysics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Double Beta Decay, CUORE Experiment
Abstract

International audience; Neutrino oscillation experiments proved that neutrinos have mass and this enhanced the interest in neutrinoless double-beta decay (0νββ). The observation of this very rare hypothetical decay would prove the leptonic number violation and would give us indications about neutrinos mass hierarchy and absolute mass scale. CUORE (Cryogenic Underground Observatory for Rare Events) is an array of 988 crystals of TeO2, for a total sensitive mass of 741 kg. Its goal is the observation of 0νββ of 130Te. The crystals, placed into the a dilution cryostat, are operated as bolometers at a temperature close to 10 mK. CUORE commissioning phase has been concluded recently in Gran Sasso National Laboratory, Italy, and data taking is expected to start in spring 2017. If target background rate is reached (0.01counts/day/keV/kg), the sensibility of CUORE will be, in five years of data taking, T1/2 1026years (1σ CL). In order to test the quality of materials and optimize the construction procedures, the collaboration realized CUORE-0, that took data from spring of 2013 to summer 2015. Here, after a brief description of CUORE, I report its commissioning status and CUORE-0 results.

Published
2016

3. Q Value of the Superallowed Decay of $^{46}$V and Its Influence on $V_ud$ and the Unitarity of the Cabibbo-Kobayashi-Maskawa Matrix

Author

Savard, G., Buchinger, F., A. Clark, J., E. Crawford, J., Gulick, S., C. Hardy, J., A. Hecht, A., K. P. Lee, J., F. Levand, A., D. Scielzo, N., Sharma, H., S. Sharma, K., Tanihata, I., Villari, A.C.C., Wang, Y., Grand Accélérateur National d'Ions Lourds (GANIL), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
nuclei with mass number 39 to 58, standard model, electroweak theories, 21.10.Dr, 23.40.Bw, 23.40.Hc, 27.40.+z, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], beta-decay
Abstract

The masses of the radioactive nuclei $^{46}$V and its decay daughter $^{46}$Ti have been measured with the Canadian Penning Trap on-line Penning trap mass spectrometer to a precision of 1$\times10^{-8}$. A QEC value of 7052.90(40) keV for the superallowed beta decay of $^{46}$V is obtained from the difference of these two masses. With this precise Q value, the [script F]t value for this decay is determined with improved precision. An investigation of an earlier Q-value measurement for $^{46}$V uncovers a set of 7 measurements that cannot be reconciled with modern data and affects previous evaluations of V$_{ud}$ from superallowed Fermi decays. A new evaluation, adding our new data and removing the discredited subset, yields new values for G$_V$ and V$_{ud}$. When combined with recent results for V$_{us}$, this yields modified constraints for the unitarity of the Cabibbo-Kobayashi-Maskawa matrix and other extensions of the standard model.

Published
2005

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