CGC/saturation approach: secondary Reggeons and $\rho =Re/Im$ dependence on energy

Abstract

In this letter we demonstrate that a model which is based on the CGC/saturation approach, is able to describe soft interaction collisions for the wide range of $W=\sqrt{s}=30GeV÷13TeV$ including the new TOTEM data at 13 TeV. We have incorporated the secondary Reggeons in our approach which enables us to describe the complete set of the soft data, including the energy behaviour of $\rho$ the ratio of the real to imaginary parts of the elastic scattering amplitude. We argue that it is premature to claim that an odderon contribution is necessary, but estimate its possible strength as $1mb$ to the real part of the amplitude at W = 13 \,TeV. We show that the odderon contribution depends on the value of energy leading to ${\rm Re A\Lb s, t=0\Rb} $= 8 mb at W=21.2 \,GeV. Bearing this in mind we do not believe that $\rho$ at high energies is the appropriate observable for detecting the odderon contribution. The successful description of the soft data in the wide range of energy strengthens our claim that the CGC/saturation approach is the only viable candidate for an effective theory for high energy QCD.

6pp. 5 figures in pdf files. arXiv admin note: text overlap with arXiv:1712.06992, arXiv:1706.07617, arXiv:1607.00594

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Cited by in corpus (16)

• Measurement of the total cross section and $\rho$-parameter from elastic scattering in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Evidence of Odderon-exchange from scaling properties of elastic scattering at TeV energies
• Spin-dependent Pomeron and Odderon in elastic proton-proton scattering
• The Phillips - Barger model for the elastic cross section and the Odderon
• Analysis and implications of precision near-forward TOTEM data
• QCD Odderon: non linear evolution in the leading twist
• Observation of Odderon Effects at LHC energies -- A Real Extended Bialas-Bzdak Model Study
• Thermal radiation and inclusive production in the KLN model for ion-ion collisions
• Thermal radiation and inclusive production in the CGC/saturation approach at high energies
• Proton-proton forward scattering at the LHC
• A new parton model for the soft interactions at high energies: the Odderon
• A model of diffractive excitation in $pp$ collisions at high energies
• Nonperturbative gluon exchange in $pp$ elastic scattering at TeV energies
• Soft Pomeron in the Colour Glass Condensate approach
• Soft Pomeron in light of the LHC correlated data
• Searching for the Odderon in the diffractive $f_2(1270)$ photoproduction at $pA$ collisions