학술논문
Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab -- 2018 update to PR12-16-001
Document Type
Working Paper
Author
Battaglieri, M.; Bersani, A.; Bracco, G.; Caiffi, B.; Celentano, A.; De Vita, R.; Marsicano, L.; Musico, P.; Panza, F.; Ripani, M.; Santopinto, E.; Taiuti, M.; Bellini, V.; Bondi', M.; Castorina, P.; De Napoli, M.; Italiano, A.; Kuznetzov, V.; Leonora, E.; Mammoliti, F.; Randazzo, N.; Re, L.; Russo, G.; Russo, M.; Shahinyan, A.; Sperduto, M.; Spinali, S.; Sutera, C.; Tortorici, F.; Baltzell, N.; Dalton, M.; Freyberger, A.; Girod, F. -X.; Kharashvili, G.; Kubarovsky, V.; Pasyuk, E.; Smith, E. S.; Stepanyan, S.; Szumilla-Vance, H.; Ungaro, M.; Whitlatch, T.; Izaguirre, E.; Krnjaic, G.; Ehle, I.; Snowden-Ifft, D.; Loomba, D.; Carpinelli, M.; D'Urso, D.; Gabrieli, A.; Maccioni, G.; Sant, M.; Sipala, V.; Ameli, F.; Cisbani, E.; De Persio, F.; Del Dotto, A.; Garibaldi, F.; Meddi, F.; Nicolau, C. A.; Urciuoli, G. M.; Chiarusi, T.; Manzali, M.; Pellegrino, C.; Schuster, P.; Toro, N.; Essig, R.; Wood, M. H.; Holtrop., M.; Paremuzyan, R.; De Cataldo, G.; De Leo, R.; Di Bari, D.; Lagamba, L.; Nappi, E.; Perrino, R.; Balossino, I.; Barion, L.; Ciullo, G.; Contalbrigo, M.; Drago, A.; Lenisa, P.; Movsisyan, A.; Pappalardo, L.; Spizzo, F.; Turisini, M.; Hasch, D.; Lucherini, V.; Mirazita, M.; Pisano, S.; Rossi, P.; Tomassini, S.; Simi, G.; D'Angelo, A.; Lanza, L.; Rizzo, A.; Filippi, A.; Genovese, M.; Kunkel, M.; Bashkanov, M.; Murphy, A.; Smith, G.; Watts, D.; Zachariou, N.; Zana, L.; Glazier, D.; Ireland, D.; McKinnon, B.; Sokhan, D.; Colaneri, L.; Pereira, S. Anefalos; Afanasev, A.; Briscoe, B.; Strakovsky, I.; Kalantarians, N.; Weinstein, L.; Adhikari, K. P.; Dunne, J. A.; Dutta, D.; Fassi, L. El; Ye, L.; Hicks, K.; Cole, P.; Dobbs, S.; Fanelli, C.; Mohanmurthy, P.
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Abstract
This document complements and completes what was submitted last year to PAC45 as an update to the proposal PR12-16-001 "Dark matter search in a Beam-Dump eXperiment (BDX)" at Jefferson Lab submitted to JLab-PAC44 in 2016. Following the suggestions contained in the PAC45 report, in coordination with the lab, we ran a test to assess the beam-related backgrounds and validate the simulation framework used to design the BDX experiment. Using a common Monte Carlo framework for the test and the proposed experiment, we optimized the selection cuts to maximize the reach considering simultaneously the signal, cosmic-ray background (assessed in Catania test with BDX-Proto) and beam-related backgrounds (irreducible NC and CC neutrino interactions as determined by simulation). Our results confirmed what was presented in the original proposal: with 285 days of a parasitic run at 65 $\mu$A (corresponding to $10^{22}$ EOT) the BDX experiment will lower the exclusion limits in the case of no signal by one to two orders of magnitude in the parameter space of dark-matter coupling versus mass.