<i>p – air</i>production cross-section and uncorrelated mini-jets processes in pp-scattering

Fagundes, D. A.; Grau, A.; Pancheri, G.; Srivastava, Y. N.; Shekhovtsova, O.

doi:10.1051/epjconf/20159003002

Cited by 3 publications

(13 citation statements)

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“…That is, once the parameters of the eikonal χ I (b, s) are chosen to give an optimal reproduction of the total cross section, the computed inelastic cross section immediately gives the uncorrelated part of the total inelastic cross section. The importance of this fact for cosmic ray deduced pp cross sections has been noticed in [92] and discussed in Sect. 3.7.2.…”

Section: Fig 92mentioning

confidence: 88%

“…In a recent work [92], a single channel eikonal formalism has been proposed for a somewhat different reconstruction of the quantity σ prod p-air measured in cosmic rays, from the underlying pp dynamics.…”

Section: A Single-channel Model With Qcd Mini-jetsmentioning

confidence: 99%

“…The authors of [92] have used the above in an eikonal model for the elastic amplitude based on gluon resummation (with a singular α s ), which we label BN from the Bloch and Nordsieck classical theorem on the infrared catastrophe in QED.…”

Section: A Single-channel Model With Qcd Mini-jetsmentioning

confidence: 99%

“…At left we show the model predictions using MSTW parton densities [95] and different nuclear density models, at right using both MSTW and GRV densities [96], and including recent AUGER data [89] as well as those at √ s = 95 GeV from the Telescope Array Detector [90]. Reprinted with permission from [92], ©2015 Springer latter in turn provides the proper input to generate σ prod p-air as observed in cosmic rays. Work is still in progress to understand the implications of the above description on the construction of multi-channel models.…”

Section: A Single-channel Model With Qcd Mini-jetsmentioning

confidence: 99%

“…Table 13 contains the points corresponding to our model results for both GRV and MSTW densities. 8 Results for MRST densities can be found in [92], together with details of different parameter sets used for the different PDFs. We notice that our model is able to describe very well all the total cross section accelerator data, and gives good agreement with cosmic ray data. The AUGER point falls within the two different parametrisations we are using, full line for MSTW and dashes for GRV.…”

Section: A Comment About Soft Gluons and Diffractionmentioning

confidence: 99%

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Introduction to the physics of the total cross section at LHC

Pancheri

Srivastava

2017

Eur. Phys. J. C

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This review describes the development of the physics of hadronic cross sections up to recent LHC results and cosmic ray experiments. We present here a comprehensive review -written with a historical perspective -about total cross sections from medium to the highest energies explored experimentally and studied through a variety of methods and theoretical models for over 60 years. We begin by recalling the analytic properties of the elastic amplitude and the theorems about the asymptotic behavior of the total cross section. A discussion of how proton-proton cross sections are extracted from cosmic rays at higher than accelerator energies and help the study of these asymptotic limits, is presented. This is followed by a description of the advent of particle colliders, through which high energies and unmatched experimental precisions have been attained. Thus the measured hadronic elastic and total cross sections have become crucial instruments to probe the so called soft part of QCD physics, where quarks and gluons are confined, and have led to test and refine Regge behavior and a number of diffractive models. As the c.m. energy increases, the total cross section also probes the transition into hard scattering describable with perturbative QCD, the so-called mini-jet region. Further tests are provided by cross section measurements of γ p, γ * p and γ * γ * for models based on vector meson dominance, scaling limits of virtual photons at high Q 2 and the BFKL formalism. Models interpolating from virtual to real photons are also tested.

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Section: Fig 92mentioning

confidence: 88%

Section: A Single-channel Model With Qcd Mini-jetsmentioning

confidence: 99%

Section: A Single-channel Model With Qcd Mini-jetsmentioning

confidence: 99%

Section: A Single-channel Model With Qcd Mini-jetsmentioning

confidence: 99%

Section: A Comment About Soft Gluons and Diffractionmentioning

confidence: 99%

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Introduction to the physics of the total cross section at LHC

Pancheri

Srivastava

2017

Eur. Phys. J. C

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Soft edge of hadron scattering and minijet models for the total and inelasticppcross sections at LHC and beyond

et al. 2015

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We show that the onset and rise of QCD mini-jets provide the dynamical mechanism behind the appearance of a soft edge in pp collisions around ISR energies and thus such a soft edge is built in our mini-jet model with soft gluon re-summation. Here the model is optimized for LHC at √ s = 7, 8 T eV and predictions made for higher LHC and cosmic ray energies. Further, we provide a phenomenological picture to discuss the breakup of the total cross section into its elastic, uncorrelated and correlated inelastic pieces in the framework of a one-channel eikonal function.

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Introduction to the physics of the total cross-section at LHC: A Review of Data and Models

Pancheri,

Srivastava

2016

Preprint

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This review describes the development of the physics of hadronic cross sections up to recent LHC results and cosmic ray experiments. We present here a comprehensive review -written with a historical perspective -about total cross-sections from medium to the highest energies explored experimentally and studied through a variety of methods and theoretical models for over sixty years. We begin by recalling the analytic properties of the elastic amplitude and the theorems about the asymptotic behavior of the total cross-section. A discussion of how proton-proton cross-sections are extracted from cosmic rays at higher than accelerator energies and help the study of these asymptotic limits, is presented. This is followed by a description of the advent of particle colliders, through which high energies and unmatched experimental precisions have been attained. Thus the measured hadronic elastic and total cross-sections have become crucial instruments to probe the so called soft part of QCD physics, where quarks and gluons are confined, and have led to test and refine Regge behavior and a number of diffractive models. As the c.m. energy increases, the total cross-section also probes the transition into hard scattering describable with perturbative QCD, the so-called mini-jet region. Further tests are provided by cross-section measurements of γp, γ * p and γ * γ * for models based on vector meson dominance, scaling limits of virtual photons at high Q 2 and the BFKL formalism. Models interpolating from virtual to real photons are also tested. It seems to us to be a necessary task to explore bit-by-bit the rigorous consequences of analyticity, unitarity and crossing. Who knows if someday one will not be able to reassemble the pieces of the puzzle. -A.

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p – airproduction cross-section and uncorrelated mini-jets processes in pp-scattering

Cited by 3 publications

References 62 publications

Introduction to the physics of the total cross section at LHC

Introduction to the physics of the total cross section at LHC

Soft edge of hadron scattering and minijet models for the total and inelasticppcross sections at LHC and beyond

Introduction to the physics of the total cross-section at LHC: A Review of Data and Models

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