Planck-scale Lorentz violation constrained by Ultra-High-Energy Cosmic Rays

被引：65

作者：

Maccione, Luca ^{[1
,2
]}

Taylor, Andrew M. ^{[3
]}

Mattingly, David M.

Liberati, Stefano ^{[4
,5
]}

机构：

[1] DESY, Theory Grp, D-22607 Hamburg, Germany

[2] Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg, Germany

[3] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[4] SISSA, I-34014 Trieste, Italy

[5] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2009年 / 04期

关键词：

ultra high energy cosmic rays; quantum gravity phenomenology; NONCOMMUTATIVE SPACE-TIME; INVARIANCE VIOLATION; QUANTUM-GRAVITY; SPECTRUM; HIERARCHY; SYMMETRY; BURSTS; TESTS;

D O I：

10.1088/1475-7516/2009/04/022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the consequences of higher dimension Lorentz violating, CPT even kinetic operators that couple standard model fields to a non-zero vector field in an Effective Field Theory framework. Comparing the ultra-high energy cosmic ray spectrum reconstructed in the presence of such terms with data from the Pierre Auger observatory allows us to establish two sided bounds on the coefficients of the mass dimension five and six operators for the proton and pion. Our bounds imply that for both protons and pions, the energy scale of Lorentz symmetry breaking must be well above the Planck scale. In particular, the dimension five operators are constrained at the level of 10(-3) M-Planck(-1). The magnitude of the dimension six proton coefficient is bounded at the level of 10(-6) M-Planck(-2) except in a narrow range where the pion and proton coefficients are both negative and nearly equal. In this small area, the magnitude of the dimension six proton coefficient must only be below 10(-3) M-Planck(-2). Constraints on the dimension six pion coefficient are found to be much weaker, but still below M-Planck(-2).

引用

页数：21

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