Cosmogenic backgrounds to 0 nu beta beta in exo-200
文献类型：期刊论文
| 作者 | Albert, J. B.1,2; Auty, D. J.3,27; Barbeau, P. S.4,5; Beck, D.6; Belov, V.7; Breidenbach, M.8; Brunner, T.9,10; Burenkov, A.7; Cao, G. F.11; Chambers, C.12 |
| 刊名 | Journal of cosmology and astroparticle physics
 |
| 出版日期 | 2016-04-01 |
| 期号 | 4页码:29 |
| 关键词 | Double beta decay Cosmic ray experiments Neutrino experiments |
| ISSN号 | 1475-7516 |
| DOI | 10.1088/1475-7516/2016/04/029 |
| 通讯作者 | Albert, j. b.(joalbert@indiana.edu) |
| 英文摘要 | As neutrinoless double-beta decay experiments become more sensitive and intrinsic radioactivity in detector materials is reduced, previously minor contributions to the background must be understood and eliminated. with this in mind, cosmogenic backgrounds have been studied with the exo-200 experiment. using the exo-200 tpc, the muon flux (through a flat horizontal surface) underground at the waste isolation pilot plant (wipp) has been measured to be phi = 4.07 +/- 0.14 (sys) +/- 0.03 (stat) x 10(-7) cm(-2) s(-1), with a vertical intensity of i-v = 2.97(-0.13)(+0.14) (sys) +/- 0.02 (stat) x 10(-7) cm(-2) s(-1) sr(-1). simulations of muon-induced backgrounds identified several potential cosmogenic radionuclides, though only xe-137 is a significant background for the xe-136 0v beta beta search with exo-200. muon-induced neutron backgrounds were measured using gamma-rays from neutron capture on the detector materials. this provided a measurement of xe-137 yield, and a test of the accuracy of the neutron p roduction and transport simulations. the independently measured rates of xe-137 neutron capture and of xe-137 decay agree within uncertainties. geant4 and fluka simulations were performed to estimate neutron capture rates, and these estimates agreed to within similar to 40% or better with measurements. the ability to identify xe-136(n, gamma) events will allow for rejection of xe-137 backgrounds in future 0v beta beta analyses. |
| WOS关键词 | NUCLEAR-DATA SHEETS ; ENERGY-LEVELS ; LIGHT-NUCLEI ; SIMULATION ; GEANT4 |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000393286400003 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176844 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Albert, J. B. |
| 作者单位 | 1.Indiana Univ, Dept Phys, Bloomington, IN 47405 USA 2.Indiana Univ, CEEM, Bloomington, IN 47405 USA 3.Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA 4.Duke Univ, Dept Phys, Durham, NC 27708 USA 5.Triangle Univ Nucl Lab, Durham, NC 27708 USA 6.Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA 7.Inst Theoret & Expt Phys, Moscow, Russia 8.SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA 9.McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada 10.TRIUMF, Vancouver, BC V6T 2A3, Canada |
| 推荐引用方式 GB/T 7714 | Albert, J. B.,Auty, D. J.,Barbeau, P. S.,et al. Cosmogenic backgrounds to 0 nu beta beta in exo-200[J]. Journal of cosmology and astroparticle physics,2016(4):29. |
| APA | Albert, J. B..,Auty, D. J..,Barbeau, P. S..,Beck, D..,Belov, V..,...&Zeldovich, O. Ya..(2016).Cosmogenic backgrounds to 0 nu beta beta in exo-200.Journal of cosmology and astroparticle physics(4),29. |
| MLA | Albert, J. B.,et al."Cosmogenic backgrounds to 0 nu beta beta in exo-200".Journal of cosmology and astroparticle physics .4(2016):29. |
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