Holographic pomeron and entropy

Alexander Stoffers; Ismail Zahed

doi:10.1103/PhysRevD.88.025038

Holographic pomeron and entropy

Alexander Stoffers
, Ismail Zahed

Physics and Astronomy

Stony Brook University

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

In dipole-dipole scattering at large rapidity χ=lna(s/s₀), the induced instanton on the string world sheet carries entropy S _k=2(α_Pk-1)χ, with α_Pk-1 the Pomeron intercept for a dipole source of N-ality k. We argue that this entropy is released promptly over a time t_R≈(b/χ)3/ (4α^′), with α^′/2 the Pomeron slope and b the impact parameter. This stringy entropy may explain the 3/2 jump in the total charged multiplicities at about ten participants reported over a wide range of collider energies by PHOBOS. We predict the charged multiplicities in pp, pA and central AA collisions at LHC.

Original language	English
Article number	025038
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	88
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevD.88.025038
State	Published - Jul 22 2013

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10.1103/PhysRevD.88.025038

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AB - In dipole-dipole scattering at large rapidity χ=lna(s/s0), the induced instanton on the string world sheet carries entropy S k=2(αPk-1)χ, with αPk-1 the Pomeron intercept for a dipole source of N-ality k. We argue that this entropy is released promptly over a time tR≈(b/χ)3/ (4α′), with α′/2 the Pomeron slope and b the impact parameter. This stringy entropy may explain the 3/2 jump in the total charged multiplicities at about ten participants reported over a wide range of collider energies by PHOBOS. We predict the charged multiplicities in pp, pA and central AA collisions at LHC.

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ER -

Holographic pomeron and entropy

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