Measurement of the proton-air cross section with Telescope Array's Middle Drum detector and surface array in hybrid mode

Title
Measurement of the proton-air cross section with Telescope Array's Middle Drum detector and surface array in hybrid mode
Authors
천병구
Keywords
HADRON FLUX; UPPER LIMIT; TEV; ENERGY; SIMULATION; SCATTERING; SPECTRUM; DEPTH
Issue Date
2015-08
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 92, NO 3, Page. 32007-32007
Abstract
In this work we are reporting on the measurement of the proton-air inelastic cross section sigma(inel)(p-air) using the Telescope Array detector. Based on the measurement of the sigma(inel)(p-air), the proton-proton cross section sigma(p-p) value is also determined at root s = 95(-8)(+5) TeV. Detecting cosmic ray events at ultrahigh energies with the Telescope Array enables us to study this fundamental parameter that we are otherwise unable to access with particle accelerators. The data used in this report are the hybrid events observed by the Middle Drum fluorescence detector together with the surface array detector collected over five years. The value of the sigma(inel)(p-air) is found to be equal to 567.0 +/- 70.5[Stat](-25)(+29)[Sys] mb. The total proton-proton cross section is subsequently inferred from Glauber formalism and the Block, Halzen and Stanev QCD inspired fit and is found to be equal to 170(-44)(+48)[Stat](-17)(+19)[Sys] mb.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.92.032007http://hdl.handle.net/20.500.11754/26821
ISSN
2470-0010; 2470-0029
DOI
http://dx.doi.org/10.1103/PhysRevD.92.032007
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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