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	Vetoing cosmogenic muons in a large liquid scintillator
	Grassi, Marco1,2; Evslin, Jarah3; Ciuffoli, Emilio3; Zhang, Xinmin4,5
刊名	Journal of high energy physics
	2015-10-06
期号	10页码:27
关键词	Neutrino detectors and telescopes Oscillation
ISSN号	1029-8479
DOI	10.1007/jhep10(2015)032
通讯作者	Grassi, marco(mgrassi@ihep.ac.cn)
英文摘要	At upcoming medium baseline reactor neutrino experiments the spallation li-9 background will be somewhat larger than the inverse beta decay reactor neutrino signal. we use new fluka simulations of spallation backgrounds to optimize a class of veto strategies and find that surprisingly the optimal veto for the mass hierarchy determination has a rejection efficiency below 90%. the unrejected background has only a modest effect on the physics goals. for example delta chi(2) for the hierarchy determination falls by 1.4 to 3 points depending on the muon tracking ability. the optimal veto strategy is essentially insensitive to the tracking ability, consisting of 2 meter radius, 1.1 second cylindrical vetoes of well tracked muons with showering energies above 3 to 4 gev and 0.7 second full detector vetoes for poorly tracked muons above 15 to 18 gev. on the other hand, as the uncertainty in 012 will be dominated by the uncertainty in the reactor neutrino spectrum and not statistical fluctuations, the optimal rejection efficiency for the measurement of theta(12) is 93% in the case of perfect tracking.
WOS关键词	DECAY ; 9BE
WOS研究方向	Physics
WOS类目	Physics, Particles & Fields
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000363551800001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176480
专题	高能物理研究所
通讯作者	Grassi, Marco
作者单位	1.Chinese Acad Sci, IHEP, Beijing 100049, Peoples R China 2.Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy 3.Chinese Acad Sci, Inst Modern Phys, Beijing 100049, Peoples R China 4.Chinese Acad Sci, IHEP, Theoret Phys Div, Beijing 100049, Peoples R China 5.Chinese Acad Sci, IHEP, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Grassi, Marco,Evslin, Jarah,Ciuffoli, Emilio,et al. Vetoing cosmogenic muons in a large liquid scintillator[J]. Journal of high energy physics,2015(10):27.
APA	Grassi, Marco,Evslin, Jarah,Ciuffoli, Emilio,&Zhang, Xinmin.(2015).Vetoing cosmogenic muons in a large liquid scintillator.Journal of high energy physics(10),27.
MLA	Grassi, Marco,et al."Vetoing cosmogenic muons in a large liquid scintillator".Journal of high energy physics .10(2015):27.

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