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	Glashow resonance as a discriminator of ultrahigh-energy cosmic neutrinos originating from p gamma and pp collisions
	Xing, Zhi-zhong1,2; Zhou, Shun3
刊名	Physical review d
	2011-08-09
卷号	84期号:3页码:7
ISSN号	1550-7998
DOI	10.1103/physrevd.84.033006
通讯作者	Xing, zhi-zhong(xingzz@ihep.ac.cn)
英文摘要	We reexamine the interesting possibility of utilizing the glashow resonance (gr) channel (nu) over bar (e) + e(-) -> w(-) -> anything to discriminate between the ultrahigh-energy (uhe) cosmic neutrinos originating from p gamma and pp collisions in an optically thin source of cosmic rays. we propose a general parametrization of the initial neutrino flavor composition by allowing the ratios phi(p gamma)(pi-)/phi(p gamma)(pi+) and phi(pp)(pi-)/phi(pp)(pi-) to slightly deviate from their conventional values. a relationship between the typical source parameter kappa = (phi(p gamma)(pi+) + phi(p gamma)(pi-))/(phi(pp)(pi+) + phi(pp)(pi-) + phi(p gamma)(pi+) + phi(p gamma)(pi-)) and the working observable of the gr r(0) equivalent to phi(t)((nu) over bare)/(phi(t)(nu mu) + phi(t)((nu) over bar mu)) at a neutrino telescope is derived, and the numerical dependence of r(0) on kappa is illustrated by taking account of the latest experimental data on three neutrino mixing angles. it is shown that a measurement of r(0) is in principle possible to identify the pure p gamma interaction (kappa = 1), the pure pp interaction (kappa = 0), or a mixture of both of them (0 < kappa < 1) at a given source of uhe cosmic neutrinos. the event rate of the gr signal against the background is also estimated.
WOS关键词	ACCELERATORS ; TELESCOPES ; BOSONS
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000293703700004
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176096
专题	高能物理研究所
通讯作者	Xing, Zhi-zhong
作者单位	1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Peking Univ, Ctr High Energy Phys, Beijing 100080, Peoples R China 3.Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany
推荐引用方式 GB/T 7714	Xing, Zhi-zhong,Zhou, Shun. Glashow resonance as a discriminator of ultrahigh-energy cosmic neutrinos originating from p gamma and pp collisions[J]. Physical review d,2011,84(3):7.
APA	Xing, Zhi-zhong,&Zhou, Shun.(2011).Glashow resonance as a discriminator of ultrahigh-energy cosmic neutrinos originating from p gamma and pp collisions.Physical review d,84(3),7.
MLA	Xing, Zhi-zhong,et al."Glashow resonance as a discriminator of ultrahigh-energy cosmic neutrinos originating from p gamma and pp collisions".Physical review d 84.3(2011):7.

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