Signatures of SUSY Dark Matter at the LHC and in the Spectra of Cosmic Rays

Details Signatures of SUSY Dark Matter at the LHC and in the Spectra of Cosmic Rays Signatures of SUSY Dark Matter at the LHC and in the Spectra of Cosmic Rays

2007-04-30

arxiv.org/abs/0704.3943v1

Astronomy and Astrophysics

Astrophysics

PhD thesis, RWTH Aachen 2007, 117 pages, 67 figures; the full resolution version (9.2M pdf) is available from http://darwin.

Scientific paper

This thesis discusses the search for supersymmetry at the future Large Hadron Collider (LHC) and the ongoing construction of one of the four large LHC experiments, the Compact Muon Solenoid (CMS), and focuses on the detection of signals from the annihilation of supersymmetric dark matter in the spectra of cosmic rays. Measurements of cosmic ray antiparticles, such as positrons, can impose strong constraints on the nature of new physics beyond the Standard Model. However, cosmic ray positron measurements are experimentally very challenging due to the vast proton background. A novel approach of positron identification with the space-borne AMS-01 experiment, namely through the detection of bremsstrahlung conversion in a silicon microstrip detector, is introduced. Bremsstrahlung from protons is suppressed by a factor of more than 3*10^6 with respect to positrons. The results of the positron measurement show that the bremsstrahlung approach extends the sensitivity range of AMS-01 to positron momenta up to 50 GeV/c, which is far beyond the original scope of the experiment. At momenta above 8 GeV/c there is indication for a positron overabundance with respect to model predictions for purely secondary positron production. Therefore, the AMS-01 data lend further weight to the hints of a positron overabundance seen in the data from earlier experiments. The positron fraction measurements from the most recent experiments are combined with the results of this analysis, giving the most precise positron fraction data yet available.

Affiliated with

Also associated with

No associations

Rating

Signatures of SUSY Dark Matter at the LHC and in the Spectra of Cosmic Rays 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 SUSY Dark Matter at the LHC and in the Spectra of Cosmic Rays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signatures of SUSY Dark Matter at the LHC and in the Spectra of Cosmic Rays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-415454