Several Effects Unexplained by QCD

Abstract

Abstract:Several new experimental discoveries in high energy proton interactions, yet unexplained by QCD, are discussed in the paper. The increase of the cross sections with increasing energy from ISR to LHC, the correlation between it and the behavior of the slope of the elastic diffraction cone, the unexpected increase of the survival probability of protons in the same energy range, the new structure of the elastic differential cross section at rather large transferred momenta (small distances) and the peculiar ridge effect in high multiplicity inelastic processes are still waiting for QCD interpretation and deeper insight in vacuum.

Model-Independent Femtoscopic Lévy Imaging for Elastic Proton-Proton Scattering

“…As far as we know, the significance of this observation was noted first in Ref. [11]. As we detailed in Ref.…”

Odderon and proton substructure from a model-independent Lévy imaging of elastic pp and $$p\bar{p}$$ p p ¯

“…Possible evidence for a new substructure inside the proton at LHC energies was, as far as we know, first pointed out by Dremin in Ref. [16]. In this paper, we explored this possibility in detail and identified the characteristic Lévy exponent as , characterized the substructure with an approximate Gaussian and Lévy scales at the ISR and LHC energies, respectively, and determined the corresponding contribution to the total pp cross-section as well, as described in Sect.…”

Convergence properties of Lévy expansions: implications for Odderon and proton structure

“…The recent TOTEM results [4,5] generated a burst of high level and intense theoretical debate about the correct interpretation of these data, see Refs. [15][16][17][18][19][20][21][22][23][24][25][26][27]. All possible extreme views were present among these first interpretative papers, including claims for a maximal Odderon effect [23] and claims of lack of any significant Odderon effects, Refs.…”