BROWSE

Related Scientist

kim,namyoung's photo.

kim,namyoung
지하실험연구단
more info

ITEM VIEW & DOWNLOAD

Direct dark matter search by annual modulation with 2.7 years of XMASS-I data

Cited 9 time in webofscience Cited 21 time in scopus
1,026 Viewed 325 Downloaded
Title
Direct dark matter search by annual modulation with 2.7 years of XMASS-I data
Author(s)
Abe K.; Hiraide K.; Ichimura K.; Kishimoto Y.; Kobayashi K.; Kobayashi M.; Moriyama S.; Nakahata M.; Norita T.; Ogawa H.; Sato K.; Sekiya H.; Takachio O.; Takeda A.; Tasaka S.; Yamashita M.; Yang B.S.; Nam Young Kim; Yeongduk Kim; Itow Y.; Kanzawa K.; Kegasa R.; Masuda K.; Takiya H.; Fushimi K.; Kanzaki G.; Martens K.; Suzuki Y.; Xu B.D.; Fujita R.; Hosokawa K.; Miuchi K.; Oka N.; Takeuchi Y.; Yong Hamb Kim; Lee K.B.; Lee M.K.; Fukuda Y.; Miyasaka M.; Nishijima K.; Nakamura S.; XMASS Collaboration
Publication Date
2018-05
Journal
Physical Review d, v.97, no.10, pp.102006
Publisher
AMER PHYSICAL SOC
Abstract
An annual modulation signal due to the Earth orbiting around the Sun would be one of the strongest indications of the direct detection of dark matter. In 2016, we reported a search for dark matter by looking for this annual modulation with our single-phase liquid xenon XMASS-I detector. That analysis resulted in a slightly negative modulation amplitude at low energy. In this work, we included more than one year of additional data, which more than doubles the exposure to 800 live days with the same 832 kg target mass. When we assume weakly interacting massive particle (WIMP) dark matter elastically scattering on the xenon target, the exclusion upper limit for the WIMP-nucleon cross section was improved by a factor of 2 to 1.9×10-41 cm2 at 8 GeV/c2 at 90% confidence level with our newly implemented data selection through a likelihood method. For the model-independent case, without assuming any specific dark matter model, we obtained more consistency with the null hypothesis than before with a p-value of 0.11 in the 1-20 keV energy region. This search probed this region with an exposure that was larger than that of DAMA/LIBRA. We also did not find any significant amplitude in the data for periodicity with periods between 50 and 600 days in the energy region between 1 to 6 keV. © 2018 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/5278
DOI
10.1103/PhysRevD.97.102006
ISSN
2470-0010
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
PhysRevD.97.102006.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse