High energy neutrinos from choked GRBs and their flavor ratio measurement by the IceCube

The high energy neutrinos produced in a choked gamma-ray burst can undergo matter oscillation before emerging out of the stellar envelope. Before reaching the detector on Earth, these neutrinos can undergo further vacuum oscillation and then Earth matter oscillation when crossing the diameter of the Earth. In the context of IceCube we study the Earth matter effect on neutrino flux in the detector. For the calculation of the track-to-shower ratio R in the IceCube, we have included the shadowing effect and the additional contribution from the muon track produced by the high energy tau lepton decay in the vicinity of the detector. We observed that R is different for different CP phases in vacuum but the matter effect suppresses these differences. We have also studied the behavior of R when the spectral index α varies

El Espectador: 'Colombia, Pais en Marcha' Dice el Subsecretario Oliver al Llegar a Bogota

El Espectador Newspaper: 'Colombia, Pais en Marcha' Dice el Subsecretario Oliver al Llegar a Bogota

El Tiempo: Notable Recuperacion ha Obtenido Colombia

El Tiempo newspaper of Bogota Colombia. Title: Notable Recuperacion ha Obtenido Colombia

Newspaper: La Republica: La Noticia del Dia

La Republica newspaper of Bogota Colombia. Title: La Noticia del Dia and various photos

Bogota, Colombia 1911

Relief shown by shading and spot heights. Includes index and illustrations of national crest. North oriented toward left.Color1:10,00