Summary of Physics Results from the TOTEM Experiment

Latino, G.

doi:10.1051/epjconf/20134902005

Cited by 13 publications

(9 citation statements)

References 13 publications

(11 reference statements)

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“…According to calculations, the main contribution to the integrals D p (E µ ) · d E µ and D He (E µ ) · d E µ comes from secondary particles with energies in the ranges of (0.01-0.6)E and (0.001-0.1)E, where E is the energy of a projectile particle for primary protons and helium nuclei, respectively. The results of this comparison are also confirmed by the data of LHCf [6] and TOTEM [7].…”

Section: The Results Of Simulationssupporting

confidence: 79%

“…This difference increases at large values η because of the difference between the slopes of the calculated curve and the data from [7]. The QGSJET II-04 [5] model predicts the density d N ch /dη which is (18-30)% higher than the data [7] in the range 5.3 ≤ η ≤ 6.4. It is also important to note that for differences of rapidity y 0, the value of the average transverse momentum p T for π 0 -mesons is about 50 MeV/c less than data [24].…”

Section: The Results Of Simulationsmentioning

confidence: 80%

“…For example, the QGSJET II-04 model [5] overestimates the density of charged particles d N ch /dη per unit of pseudorapidity at the pseudorapidity η = 6.345 by a factor of k ≈ 1.3 as compared to the TOTEM data [7]. This difference increases at large values η because of the difference between the slopes of the calculated curve and the data from [7].…”

Section: The Results Of Simulationsmentioning

confidence: 92%

“…Therefore, testing models at the highest energies of secondary particles is very important for understanding the physics of hadron interactions and for the interpretation of the EAS data. At the LHC this testing is carried out in the LHCf [6] and TOTEM [7] experiments. In cosmic rays, we suggest testing of models of hadron interactions with the help of the atmospheric muon spectrum.…”

Section: Introductionmentioning

confidence: 99%

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Constraints of hadronic interaction models from the cosmic muon observations

Dedenko

Lukyashin

Fedorova

et al. 2015

EPJ Web of Conferences

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Abstract.A simple method of the vertical muon energy spectrum simulations has been suggested. These calculations have been carried out in terms of various models of hadronic interactions. The most energetic π ± -mesons and K ± -mesons produced in hadron interactions contribute mainly to this energy spectrum of muons due to the very steep energy spectrum of the primary particles. So, some constraints on the hadronic interaction models may be set from a comparison of calculated results with cosmic data on the vertical muon energy spectrum. This comparison showed that the most energetic secondary particles production is too high in the case of the QGSJET II-04 model and rather low in the case of the QGSJET II-03 model. These conclusion have been supported by the LHC data.

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Section: The Results Of Simulationssupporting

confidence: 79%

Section: The Results Of Simulationsmentioning

confidence: 80%

Section: The Results Of Simulationsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Constraints of hadronic interaction models from the cosmic muon observations

Dedenko

Lukyashin

Fedorova

et al. 2015

EPJ Web of Conferences

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“…Recent data [1,2] definitely confirm the previous observations [3], namely, that the total cross sections increase steadily with energy (σ tot ∼ ln n s as 1 ≲ n ≲ 2); the steady growth is observed for σ el and σ inel , while the ratio ReA el =ImA el is small and probably decreases slowly.…”

Section: Introductionsupporting

confidence: 84%

Hadron collisions at ultrahigh energies: Black disk or resonant disk modes?

2014

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The analysis of current ultrahigh energy data for hadronic total cross sections and diffractive scattering cross sections points to a steady growth of the optical density with energy for elastic scattering amplitudes in the impact parameter space, b. At LHC energy the profile function of the pp-scattering amplitude, TðbÞ, reaches the black disk limit at small b. Two scenarios are possible at larger energies, ffiffi ffi s p ≳ 100 TeV. First, the profile function gets frozen in the black disk limit, TðbÞ ≃ 1, while the radius of the black disk R black disk is increasing with ln s, providing σ tot ∼ ln 2 s, σ el ∼ ln 2 s, σ inel ∼ ln 2 s. In another scenario the profile function continues to grow at ffiffi ffi s p ≳ 100 TeV approaching the maximal value, TðbÞ ≃ 2, that means the resonant disk mode. We discuss features of the resonant disk mode when the disk radius, R resonant disk , increases providing the growth of the total and elastic cross sections σ tot ∼ ln 2 s, σ el ∼ ln 2 s, but a more slow increase of inelastic cross section, σ inel ∼ ln s.In the impact parameter space the profile function TðbÞ is determined at high energies as PHYSICAL REVIEW D 90, 074005 (2014) 1550-7998=2014=90(7)=074005 (5) 074005-1

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Checks of asymptotia in pp elastic scattering at LHC

Grau¹,

Pacetti²,

Pancheri³

et al. 2012

Physics Letters B

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We parametrize TOTEM data for the elastic differential pp cross section at sqrt(s)=7 TeV in terms of two exponentials with a relative phase. We employ two previously derived sum rules for pp elastic scattering amplitude in impact parameter space to check whether asymptotia has been reached at the LHC. A detailed study of the TOTEM data for the elastic differential cross section at sqrt(s)=7 TeV is made and it is shown that, within errors, the asymptotic sum rules are satisfied at LHC. We propose to use this parametrization to study forthcoming higher energy data.Comment: 16 pages, 5 figure

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Summary of Physics Results from the TOTEM Experiment

Cited by 13 publications

References 13 publications

Constraints of hadronic interaction models from the cosmic muon observations

Constraints of hadronic interaction models from the cosmic muon observations

Hadron collisions at ultrahigh energies: Black disk or resonant disk modes?

Checks of asymptotia in pp elastic scattering at LHC

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