# ICRC2015

July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

## First result of the proton-air cross section of the Telescope Array experiment.

Aug 3, 2015, 2:15 PM
15m
Yangtze 2 (World Forum)

### Yangtze 2

#### World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution CR-EX

### Speaker

Dr Rasha Abbasi (University of Utah)

### Description

In this work we report on the measurement of the proton-air inelastic cross section $\sigma^{\rm inel}_{\rm p-air}$ using data collected by the Telescope Array (TA) detector. Based on the measurement of $\sigma^{\rm inel}_{\rm p-air}$, the proton-proton cross section $\sigma_{\rm p-p}$ is subsequently inferred using the Glauber Formalism and the QCD-inspired fit of Block, Halzen and Stanev, at a center of mass energy of 95 TeV. The use of cosmic ray events at ultra high energies enables the measurement of this fundamental quantity at energies currently inaccessible with particle accelerators. The data used in this report was collected over five years using hybrid events from the TA Middle Drum fluorescence detector as well as the TA surface detector array.
Registration number following "ICRC2015-I/" 1086 Telescope Array

### Primary author

Dr Rasha Abbasi (University of Utah)

### Presentation materials

There are no materials yet.