Title: Recent results from the AMS experiment

Speaker: Prof. Guo-ming Chen, Institute of High Energy Physics, CAS

Time and place: 14:00-15:00, April 19 ( Friday), 2013, Lecture Hall/INPAC

Abstract:

The Alpha Magnetic Spectrometer (AMS) is a general purpose high energy particle physics detector. It was installed on the International Space Station (ISS) on 19 May 2011 to conduct a unique long duration mission (~20 years) of fundamental research in space. The main physics goals of AMS are to search for dark matter, anti-matter and to study the origin and propagation of cosmic rays. Based on 6.8 million positron and electron events, the positron fraction in primary cosmic rays is measured precisely in the energy range from 0.5 to 350 GeV. No fine structure is found in the spectrum, and no anisotropy was observed either. Together, these features show the existence of new physical phenomena.