Initial state angular asymmetries in high energy p plus A collisions: Spontaneous breaking of rotational symmetry by a color electric field and C-odd fluctuations

Autor(es)

Dumitru, Adrian ^{[1, 2]} ; Giannini, Andre V. ^{[3, 1]}

Afiliação do(s) autor(es)

^[1] CUNY Bernard M Baruch Coll, Dept Nat Sci, New York, NY 10010 - USA

^[2] CUNY Grad Sch & Univ Ctr, New York, NY 10016 - USA

^[3] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Nuclear Physics A; v. 933, p. 212-228, JAN 2015.
• Citações Web of Science: 32

Resumo

We present a simple model for generating initial-state azimuthal asymmetries in pA collisions from dipole scattering on an anisotropic dense target. Parity even angular harmonics arise from the C-even real part of the dipole S-matrix which spontaneously breaks rotational symmetry in two dimensions due to a condensate for the color electric field. This leads to an angular correlation with the direction of E. Parity odd harmonics are generated by the C-odd imaginary part (odderon) due to coupling to coherent target fluctuations which again break rotational invariance. We perform a first qualitative extraction of the amplitude and cutoff of C-odd fluctuations in the dense target. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/23848-5 - Fenomenologia da saturação de glúons em colisões pa e AA no LHC
• Beneficiário: André Veiga Giannini
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado