Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-05-25
Phys.Rev. D72 (2005) 053004
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, 6 figures; Added references
Scientific paper
10.1103/PhysRevD.72.053004
The importance and signatures of cosmic tau--(anti)neutrinos have been studied for upward-- and downward--going $\mu^-+\mu^+$ and hadronic shower event rates relevant for present and future underground water or ice detectors, utilizing the unique and reliable ultrasmall--$x$ predictions of the dynamical (radiative) parton model. The upward--going $\mu^- +\mu^+$ event rates calculated just from cosmic $\nu_{\mu}+\bar{\nu}_{\mu}$ fluxes are sizeably enhanced by taking into account cosmic $\nu_{\tau}+ \bar{\nu}_{\tau}$ fluxes and their associated $\tau^- +\tau^+$ fluxes as well. The coupled transport equations for the upward--going $\stackrel{(-)}{\nu}_{\tau}$ flux traversing the Earth imply an enhancement of the attenuated and regenerated $\stackrel{(-)}{\nu}_{\tau}$ flux typically around $10^4-10^5$ GeV with respect to the initial cosmic flux. This enhancement turns out to be smaller than obtained so far, in particular for flatter initial cosmic fluxes behaving like $E_{\nu}^{-1}$. Downward--going $\mu^- +\mu^+$ events and in particular the background--free and unique hadronic `double bang' and `lollipop' events allow to test downward--going cosmic $\nu_{\tau} +\bar{\nu}_{\tau}$ fluxes up to about $10^9$ GeV.
Reya Ewald
Roediger Joel
No associations
LandOfFree
Signatures of cosmic tau-neutrinos does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Signatures of cosmic tau-neutrinos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signatures of cosmic tau-neutrinos will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-641846