CERN Accelerating science

Article
Report number arXiv:1803.05701 ; arXiv:1806.03050
Title The $^{7}$Be($\boldsymbol{n,p}$)$^{7}$Li reaction and the Cosmological Lithium Problem: measurement of the cross section in a wide energy range at n_TOF (CERN)
Related titleThe $^{7}$Be(n,p)$^{7}$Li reaction and the Cosmological Lithium Problem: measurement of the cross section in a wide energy range at n_TOF (CERN)
Author(s)

Damone, L. (INFN, Bari ; Bari U.) ; Barbagallo, M. (INFN, Bari ; CERN) ; Mastromarco, M. (INFN, Bari ; CERN) ; Mengoni, A. (ENEA, Bologna ; INFN, Bologna) ; Cosentino, L. (INFN, LNS) ; Maugeri, E. (PSI, Villigen) ; Heinitz, S. (PSI, Villigen) ; Schumann, D. (PSI, Villigen) ; Dressler, R. (PSI, Villigen) ; Käppeler, F. (KIT, Karlsruhe) ; Colonna, N. (INFN, Bari) ; Finocchiaro, P. (INFN, LNS) ; Andrzejewski, J. (Lodz U.) ; Perkowski, J. (Lodz U.) ; Gawlik, A. (Lodz U.) ; Aberle, O. (CERN) ; Altstadt, S. (Frankfurt U.) ; Ayranov, M. (Luxembourg U.) ; Audouin, L. (Orsay, IPN) ; Bacak, M. (CERN ; Vienna, Tech. U., Atominst.) ; Balibrea-Correa, J. (Madrid, CIEMAT) ; Ballof, J. (CERN) ; Bécares, V. (Madrid, CIEMAT) ; Bečvář, F. (Charles U.) ; Beinrucker, C. (Frankfurt U.) ; Bellia, G. (INFN, LNS ; Catania U.) ; Bernardes, A.P. (CERN) ; Berthoumieux, E. (IRFU, Saclay) ; Billowes, J. (Manchester U.) ; Borge, M.J.G. (CERN) ; Bosnar, D. (Zagreb U., Phys. Dept.) ; Brown, A. (U. York (main)) ; Brugger, M. (CERN) ; Busso, M. (INFN, Perugia ; Perugia U.) ; Caamaño, M. (Santiago de Compostela U.) ; Calviño, F. (Barcelona, Polytechnic U.) ; Calviani, M. (CERN) ; Cano-Ott, D. (Madrid, CIEMAT) ; Cardella, R. (CERN ; INFN, LNS) ; Casanovas, A. (Barcelona, Polytechnic U.) ; Castelluccio, D.M. (ENEA, Bologna) ; Catherall, R. (CERN) ; Cerutti, F. (CERN) ; Chen, Y.H. (Orsay, IPN) ; Chiaveri, E. (CERN) ; Cortés, G. (Barcelona, Polytechnic U.) ; Cortés-Giraldo, M.A. (Seville U.) ; Cristallo, S. (INFN, Perugia ; Rome Observ.) ; Diakaki, M. (Natl. Tech. U., Athens) ; Dietz, M. (Edinburgh U.) ; Domingo-Pardo, C. (Valencia U., IFIC) ; Dorsival, A. (CERN) ; Dupont, E. (IRFU, Saclay) ; Duran, I. (Santiago de Compostela U.) ; Fernandez-Dominguez, B. (Santiago de Compostela U.) ; Ferrari, A. (CERN) ; Ferreira, P. (Lisbon, CFP) ; Furman, W. (Dubna, JINR) ; Ganesan, S. (Bhabha Atomic Res. Ctr.) ; García-Rios, A. (Madrid, CIEMAT) ; Gilardoni, S. (CERN) ; Glodariu, T. (Bucharest, IFIN-HH) ; Göbel, K. (Frankfurt U.) ; Gonçalves, I.F. (Lisbon, CFP) ; González-Romero, E. (Madrid, CIEMAT) ; Goodacre, T.D. (CERN) ; Griesmayer, E. (Vienna, Tech. U., Atominst.) ; Guerrero, C. (Seville U.) ; Gunsing, F. (IRFU, Saclay) ; Harada, H. (JAEA, Ibaraki) ; Heftrich, T. (Frankfurt U.) ; Heyse, J. (Geel, JRC) ; Jenkins, D.G. (U. York (main)) ; Jericha, E. (Vienna, Tech. U., Atominst.) ; Johnston, K. (CERN) ; Kadi, Y. (CERN) ; Kalamara, A. (Natl. Tech. U., Athens) ; Katabuchi, T. (Tokyo Inst. Tech.) ; Kavrigin, P. (Vienna, Tech. U., Atominst.) ; Kimura, A. (JAEA, Ibaraki) ; Kivel, N. (PSI, Villigen) ; Kohester, U. (Laue-Langevin Inst.) ; Kokkoris, M. (Natl. Tech. U., Athens) ; Krtička, M. (Charles U.) ; Kurtulgil, D. (Frankfurt U.) ; Leal-Cidoncha, E. (Santiago de Compostela U.) ; Lederer-Woods, C. (Edinburgh U.) ; Leeb, H. (Vienna, Tech. U., Atominst.) ; Lerendegui-Marco, J. (Seville U.) ; Lo Meo, S. (ENEA, Bologna ; INFN, Bologna) ; Lonsdale, S.J. (Edinburgh U.) ; Losito, R. (CERN) ; Macina, D. (CERN) ; Marganiec, J. (Lodz U.) ; Marsh, B. (CERN) ; Martínez, T. (Madrid, CIEMAT) ; Martins Correia, J.G. (CERN ; Lisbon, CFP) ; Masi, A. (CERN) ; Massimi, C. (INFN, Bologna ; U. Bologna, DIFA) ; Mastinu, P. (INFN, Legnaro) ; Matteucci, F. (INFN, Trieste ; Trieste U.) ; Mazzone, A. (INFN, Bari ; CNR-IC, Bari) ; Mendoza, E. (Madrid, CIEMAT) ; Milazzo, P.M. (INFN, Trieste) ; Mingrone, F. (CERN) ; Mirea, M. (Bucharest, IFIN-HH) ; Musumarra, A. (INFN, LNS ; Catania U.) ; Negret, A. (Bucharest, IFIN-HH) ; Nolte, R. (Braunschweig, Phys. Tech. Bund.) ; Oprea, A. (Bucharest, IFIN-HH) ; Patronis, N. (Ioannina U.) ; Pavlik, A. (Vienna U.) ; Piersanti, L. (INFN, Perugia ; Rome Observ.) ; Piscopo, M. (INFN, LNS) ; Plompen, A. (Geel, JRC) ; Porras, I. (CAFPE, Granada) ; Praena, J. (Seville U. ; CAFPE, Granada) ; Quesada, J.M. (Seville U.) ; Radeck, D. (Braunschweig, Phys. Tech. Bund.) ; Rajeev, K. (Bhabha Atomic Res. Ctr.) ; Rauscher, T. (Hertfordshire U.) ; Reifarth, R. (Frankfurt U.) ; Riego-Perez, A. (Barcelona, Polytechnic U.) ; Rothe, S. (Manchester U.) ; Rout, P. (Bhabha Atomic Res. Ctr.) ; Rubbia, C. (CERN) ; Ryan, J. (Manchester U.) ; Sabaté-Gilarte, M. (CERN ; Seville U.) ; Saxena, A. (Bhabha Atomic Res. Ctr.) ; Schell, J. (CERN ; Duisburg-Essen U.) ; Schillebeeckx, P. (Geel, JRC) ; Schmidt, S. (Frankfurt U.) ; Sedyshev, P. (Dubna, JINR) ; Seiffert, C. (CERN) ; Smith, A.G. (Manchester U.) ; Sosnin, N.V. (Manchester U.) ; Stamatopoulos, A. (Natl. Tech. U., Athens) ; Stora, T. (CERN) ; Tagliente, G. (INFN, Bari) ; Tain, J.L. (Valencia U., IFIC) ; Tarifeño-Saldivia, A. (Barcelona, Polytechnic U. ; Valencia U., IFIC) ; Tassan-Got, L. (Orsay, IPN) ; Tsinganis, A. (CERN) ; Valenta, S. (Charles U.) ; Vannini, G. (INFN, Bologna ; U. Bologna, DIFA) ; Variale, V. (INFN, Bari) ; Vaz, P. (Lisbon, CFP) ; Ventura, A. (INFN, Bologna) ; Vlachoudis, V. (CERN) ; Vlastou, R. (Natl. Tech. U., Athens) ; Wallner, A. (Vienna U. ; Australian Natl. U., Canberra) ; Warren, S. (Manchester U.) ; Weigand, M. (Frankfurt U.) ; Weiß, C. (CERN) ; Wolf, C. (Frankfurt U.) ; Woods, P.J. (Edinburgh U.) ; Wright, T. (Manchester U.) ; Žugec, P. (Zagreb U., Phys. Dept.)

Publication 2018
Imprint 2018-06-08
Number of pages 7
In: Phys. Rev. Lett. 121 (2018) 042701
DOI 10.1103/PhysRevLett.121.042701
Subject category astro-ph.CO ; nucl-ex ; Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN PS ; nTOF
Abstract We report on the measurement of the $^{7}$Be($n, p$)$^{7}$Li cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2) of the n_TOF facility at CERN. This reaction plays a key role in the lithium yield of the Big Bang Nucleosynthesis (BBN) for standard cosmology. The only two previous time-of-flight measurements performed on this reaction did not cover the energy window of interest for BBN, and showed a large discrepancy between each other. The measurement was performed with a Si-telescope, and a high-purity sample produced by implantation of a $^{7}$Be ion beam at the ISOLDE facility at CERN. While a significantly higher cross section is found at low-energy, relative to current evaluations, in the region of BBN interest the present results are consistent with the values inferred from the time-reversal $^{7}$Li($p, n$)$^{7}$Be reaction, thus yielding only a relatively minor improvement on the so-called Cosmological Lithium Problem (CLiP). The relevance of these results on the near-threshold neutron production in the p+$^{7}$Li reaction is also discussed.
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 Записът е създаден на 2018-06-13, последна промяна на 2021-08-17


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