Ultrahigh energy predictions of proton-air cross sections from accelerator data: An update

被引：12

作者：

Block, M. M. ^{[1
]}

机构：

[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 09期

关键词：

BEHAVIOR;

D O I：

10.1103/PhysRevD.84.091501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

At root s = 57 +/- 7 TeV, the Pierre Auger Observatory (PAO) measured the p-air inelastic production cross section, sigma(prod)(p-air) = air 475 +/- 22(stat)(-15)(+/- 20) (syst) mb, assuming a proton cosmic ray beam with a 25% helium contamination. From a Glauber calculation, they found the inelastic pp cross section, sigma(inel) = 90 +/- 7(stat)(-11)(+/- 9) (syst) +/- 1.5(Glaub) mb. Our parameterization of (p) over barp and pp total cross sections, sigma(tot), using analyticity constraints and unitarity gives accurate extrapolations to ultrahigh energies, and after using a Glauber calculation, accurate predictions for sigma(p-ai)r(prod). We find (i) a pp total cross section, sigma(tot) 133: 4 +/- 1: 6 mb and (ii) sigma(prod)(p-air) 483 +/- 3 mb, independently determining a 19% helium contamination. Using our 57 TeV value for pp sigma(tot) [ M. M. Block and F. Halzen, arXiv: 1109-2041], we find a pp inelastic cross section, sigma(inel) 92: 9 +/- 1.6 mb, agreeing with POA.

引用

页数：3

共 50 条

[1] Predictions of ultrahigh-energy proton-air production cross sections from accelerator data
Block, M. M.
PHYSICAL REVIEW D, 2007, 76 (11):
[2] Predictions of proton-air cross sections from accelerator and cosmic ray data
Block, MM
26TH INTERNATIONAL COSMIC RAY CONFERENCE, 2000, 516 : 387 - 406
[3] Proton-air and proton-proton cross sections
Ulrich, Ralf
ISVHECRI 2012 - XVII INTERNATIONAL SYMPOSIUM ON VERY HIGH ENERGY COSMIC RAY INTERACTIONS, 2013, 52
[4] Predicting proton-air cross sections at √s ∼ 30 TeV using accelerator and cosmic ray data
Block, MM
Halzen, F
Stanev, T
PHYSICAL REVIEW LETTERS, 1999, 83 (24) : 4926 - 4928
[5] Predicting proton-air cross sections at root s [similar to] 30 TeV using accelerator and cosmic ray data
Department of Physics, Northwestern University, Evanston, IL 60208, United States
不详
不详
Phys Rev Lett, 24 (4926-4928):
[6] Spectra and composition of ultrahigh-energy cosmic rays and the measurement of the proton-air cross section
Lipari, Paolo
PHYSICAL REVIEW D, 2021, 103 (10)
[7] On the measurement of the proton-air cross section using air shower data
Ulrich, R.
Bluemer, J.
Engel, R.
Schuessler, F.
Unger, M.
NEW JOURNAL OF PHYSICS, 2009, 11
[8] Understanding the nature of proton-air cross-sections at very high energies and the implications
De, B
Bhattacharyya, S
Guptaroy, P
MODERN PHYSICS LETTERS A, 2001, 16 (37) : 2387 - 2397
[9] Proton-Air Cross Section and Extensive Air Showers
Ulrich, Ralf
Engel, Ralph
Mueller, Steffen
Schuessler, Fabian
Unger, Michael
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2009, 196 : 335 - 340
[10] Dynamical QCD predictions for ultrahigh energy neutrino cross sections
Glück, M
Kretzer, S
Reye, E
ASTROPARTICLE PHYSICS, 1999, 11 (03) : 327 - 334

← 1 2 3 4 5 →