Elastic scattering of hadrons

Dremin, I.

doi:10.3367/ufne.0183.201301b.0003

Cited by 4 publications

(4 citation statements)

References 49 publications

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“…In contrast to diffractive DIS, the differential cross-section of elastic proton-proton collisions is not currently computable in the weak coupling regime due to the absence of a large scale, and some phenomenological models are often employed (for a review see Ref. [87]). Nevertheless, in both cases multiple parton interactions or multiple Pomeron exchanges seem to play an important role in the appearance of dips in the t-distribution, see e.g.…”

Section: Discussionmentioning

confidence: 99%

Exclusive vector meson production at high energies and gluon saturation

2014

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We systematically study exclusive diffractive (photo) production of vector mesons (J/ψ, ψ(2s), φ and ρ) off protons in high-energy collisions and investigate whether the production is a sensitive probe of gluon saturation. We confront saturation-based results for diffractive ψ(2s) and ρ production at HERA and J/ψ photoproduction with all available data including recent ones from HERA, ALICE and LHCb, finding good agreement. In particular, we show that the t-distribution of differential cross sections of photoproduction of vector mesons offers a unique opportunity to discriminate among saturation and non-saturation models. This is due to the emergence of a pronounced dip (or multiple dips) in the t-distribution of diffractive photoproduction of vector mesons at relatively large, but potentially accessible |t| that can be traced back to the unitarity features of colour dipole amplitude in the saturation regime. We show that in saturation models the dips in t-distribution recede towards lower |t| with decreasing mass of the vector meson, increasing energy or decreasing Bjorken-x, and decreasing virtuality Q. We provide various predictions for exclusive (photo) production of different vector mesons including the ratio of ψ(2s)/J/ψ at HERA, the LHC, and future colliders.

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Section: Discussionmentioning

confidence: 99%

Exclusive vector meson production at high energies and gluon saturation

2014

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“…The strong amplitude receives multi-photon exchange corrections, and the electromagnetic amplitude involves intermediate excited hadronic states. These issues sparked debates back in 1960's [25][26][27][28][29][30], and are still discussed today, in the context of elastic pp/pp and deepinelastic scattering [31][32][33][34][35].…”

Section: P-2 Double-slit Experiments In Momentum Spacementioning

confidence: 99%

Double-slit experiment in momentum space

Иванов¹,

Seipt²,

Surzhykov³

et al. 2016

EPL

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-Young's classic double-slit experiment demonstrates the reality of interference when waves and particles travel simultaneously along two different spatial paths. Here, we propose a double-slit experiment in momentum space, realized in the free-space elastic scattering of vortex electrons. We show that this process proceeds along two paths in momentum space, which are well localized and well separated from each other. For such vortex beams, the (plane-wave) amplitudes along the two paths acquire adjustable phase shifts and produce interference fringes in the final angular distribution. We argue that this experiment can be realized with the present day technology. We show that it gives experimental access to the Coulomb phase, a quantity which plays an important role in all charged particle scattering but which usual scattering experiments are insensitive to.

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“…Regge theory provides a useful tool for the phenomenological description of high energy hadron collisions [1][2][3][4]. The quantitative predictions of Regge calculus are essentially dependent on the assumed coupling of participating hadrons to the Pomeron.…”

Section: Introductionmentioning

confidence: 99%

“…The transverse range of the interaction increases with the energy [10] 1). In the present calculations we assume that the LHC energies are not high enough for Gribov universality.…”

Section: Introductionmentioning

confidence: 99%