Accès ouvert déclaré
2024
preprint
Background study of the AMoRE-pilot experiment
Aman Agrawal, В. В. Аленков, P. Aryal, J. Beyer, B. Bhandari, R. S. Boiko, K. Boonin, О. А. Бузанов, C. R. Byeon, N. Chanthima, Myung-Ki Cheoun, J. S. Choe, S. Choi, S. Choudhury, Jaeil Chung, F.A. Danevich, Mitra Djamal, D. Drung, C. Enss, A. Fleischmann, A. M. Gangapshev, L. Gastaldo, Yu. M. Gavrilyuk, A. M. Gezhaev, O. Gileva, V. D. Grigorieva, V. Gurentsov, C. Ha, D. H. Ha, Eunja Ha, Dong‐Choon Hwang, E. J. Jeon, J. A. Jeon, H. S. Jo, J. Kaewkhao, Chu-Shik Kang, W. G. Kang, V. V. Kazalov, Sebastian Kempf, Arshad Khan, Sajid Khan, D. Y. Kim, G. W. Kim, H. B. Kim, Ho-Jong Kim, H. J. Kim, H. L. Kim, H. S. Kim, M. B. Kim, S. C. Kim, S. K. Kim, S. R. Kim, W. T. Kim, Y. D. Kim, Y. H. Kim, K. Kirdsiri, Y. J. Ko, V. Kobychev, В. Н. Корноухов, V. V. Kuzminov, Do‐Hoon Kwon, C. H. Lee, DongYeup Lee, E. K. Lee, H. J. Lee, H. S. Lee, J. Lee, J. Y. Lee, K. B. Lee, M. H. Lee, M. K. Lee, S. W. Lee, Y. C. Lee, D. S. Leonard, Hong S. Lim, B. Mailyan, E. P. Makarov, P. Nyanda, Yongseok Oh, S. L. Olsen, S. I. Panasenko, H. K. Park, H. S. Park, K. S. Park, S. Y. Park, O. G. Polischuk, H. Prihtiadi, S. Ra, S. S. Ratkevich, G. Rooh, M. B. Sari, J. W. Seo, K. M. Seo, B. Sharma, K. A. Shin, V.N. Shlegel, K. Siyeon, J. H. So, N. V. Sokur, J. K. Son, Jiwei Song, N. Srisittipokakun, V.I. Tretyak, Rahadi Wirawan, K. R. Woo, H. J. Yeon, Y. S. Yoon
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Résumé fourni par la source
We report a study on the background of the Advanced Molybdenum-Based Rare process Experiment (AMoRE), a search for neutrinoless double beta decay (\znbb) of $^{100}$Mo. The pilot stage of the experiment was conducted using $\sim$1.9 kg of \CAMOO~ crystals at the Yangyang Underground Laboratory, South Korea, from 2015 to 2018. We compared the measured $β/γ$ energy spectra in three experimental configurations with the results of Monte Carlo simulations and identified the background sources in each configuration. We replaced several detector components and enhanced the neutron shielding to lower the background level between configurations. A limit on the half-life of $0νββ$ decay of $^{100}$Mo was found at $T_{1/2}^{0ν} \ge 3.0\times 10^{23}$ years at 90\% confidence level, based on the measured background and its modeling. Further reduction of the background rate in the AMoRE-I and AMoRE-II are discussed.
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Sujets associés
Neutrino Physics ResearchDark Matter and Cosmic PhenomenaParticle physics theoretical and experimental studies