刊名:Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
出版年:2009
出版时间:1 June 2009
年:2009
卷:604
期:1-2, Supplement 1
页码:S233-S235
全文大小:254 K
文摘
Existence of GZK neutrinos (ultra-high-energy neutrinos) has been justified although the flux is estimated to be extremely low. A study of radar method of UHF radio wave was carried out using a 2 MeV electron beam on a rock salt target. Radio wave reflection was reproduced in UHF and the reflection rate was consistent with microwave reflection in X-ray irradiation. Reflected power of radio wave was proportional to a temperature of the rock salt target. A new contribution of W- and Z-gluon fusion processes as well as W and Z exchange were taken into account to calculate cross-sections of UHE neutrinos against nucleons with GRACE. Nucleon structure function of CTEQ6 including low x>10−8 was employed, we obtained 1.5 times larger cross-sections than those without them.