High-Transverse-Momentum Secondaries and Rising Total Cross Sections in Cosmic-Ray Interactions

1973 ◽  
Vol 31 (7) ◽  
pp. 491-494 ◽  
Author(s):  
D. Cline ◽  
F. Halzen ◽  
J. Luthe
Keyword(s):  
Transverse Momentum ◽  
Cross Sections ◽  
Cosmic Ray ◽  
High Transverse Momentum ◽  
Total Cross Sections ◽  
Cosmic Ray Interactions

Light-fragment yield ratios from heavy-ion-induced fragmentation in atmospheric collisions of cosmic-ray primary nuclei

1991 ◽  
Vol 69 (12) ◽  
pp. 1481-1486
Author(s):  
M. J. Pantazopoulou ◽  
A. F. Barghouty ◽  
R. A. Witt
Keyword(s):  
Cross Sections ◽  
Cosmic Ray ◽  
Heavy Ion ◽  
Fragmentation Model ◽  
Light Fragment ◽  
Collision System ◽  
Nuclear Fragmentation ◽  
Good Correspondence ◽  
Total Cross Sections ◽  
Fragment Yield

A statistical nuclear-fragmentation model is used to calculate the total inclusive cross sections and yield ratios of light fragments (p, d, 3H, and 3He) from 800 MeV/nucleon mass-symmetric and mass-asymmetric collision systems. Comparison with available data reveal good correspondence between the observed total cross sections and fragment-yield ratios, and the calculated ones. The model is also used to calculate the 4He/3He ratio from CNO + CNO collisions at 1 GeV/nucleon. Averaging over the mass numberof the CNO collision system, we calculate a ratio of 5.76 ± 0.52 ± 12%. A mass-independent thermal-model formula gives a ratio of only ≈ 1.5. The appreciable calculated production of 4He relative to 3He, as fragmentation products in atmospheric CNO collisions with 1 GeV/nucleon cosmic-ray primary CNO nuclei, has important implications for studies of atmospheric secondaries as background sources for space-based and balloon-borne light-fragment observations.

scholarly journals Analysis of pp and p̄p elastic scatterings based on theoretical bounds in high-energy physics: An update

2017 ◽  
Vol 32 (28n29) ◽  
pp. 1750175 ◽  
Author(s):  
V. A. Okorokov ◽  
S. D. Campos
Keyword(s):  
Cross Sections ◽  
High Energy Physics ◽  
Quantitative Description ◽  
Cosmic Ray ◽  
High Energy ◽  
Hadron Colliders ◽  
Total Cross Sections ◽  
Energy Frontier ◽  
Energy Physics ◽  
Axiomatic Quantum Field Theory

In a previous work a novel parametrization was proposed for the [Formula: see text] and [Formula: see text] total cross-sections. Here, results are presented for the updated analysis with taking into account the recent data from accelerator experiments as well as from cosmic ray measurements. The analytic parametrizations suggested within axiomatic quantum field theory (AQFT) provide the quantitative description of energy dependence of global scattering observables with robust values of fit parameters. Based on the fit results the estimations are derived for the total cross-section and the [Formula: see text] parameter in elastic [Formula: see text] scattering at various [Formula: see text] up to energy frontier [Formula: see text] PeV which can be useful for present and future hadron colliders as well as for cosmic ray measurements at ultra-high energies.

scholarly journals Subcores in cosmic-ray air showers and high transverse momentum

1981 ◽  
Vol 7 (9) ◽  
pp. 1285-1296 ◽  
Author(s):  
W E Hazen ◽  
A Z Hendel ◽  
A G Ash ◽  
J M Foster ◽  
B R Green ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Cosmic Ray ◽  
High Transverse Momentum ◽  
Air Showers

scholarly journals LHCb: Recent results related to cosmic ray interactions

2019 ◽  
Vol 208 ◽  
pp. 05003
Author(s):  
Hans P. Dembinski
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Cosmic Ray ◽  
Forward Direction ◽  
Collective Effects ◽  
Air Showers ◽  
Proton Proton ◽  
Hadronic Interactions ◽  
Cosmic Ray Interactions ◽  
Proton Production

The LHCb experiment is designed to study flavor physics of b and c quarks. The detector is optimized for the study of identified hadrons produced in the forward direction, which also makes LHCb very interesting for the understanding of cosmic-ray induced air showers. LHCb is analysing proton-proton, protonlead, and lead-lead collisions. As a unique feature, LHCb is also studying beam interactions with noble gases using its SMOG system. We present recent measurements of charmed mesons, which are used to obtain production cross-sections, to constrain the parton PDF, to test pomeron and multi-particle interactions, nuclear and collective effects. These mostly have an indirect impact on the modeling of hadronic interactions. Finally, we present a direct measurement of the anti-proton production in proton collisions with helium gas, which are important for the understanding of AMS-02 and PAMELA data.

scholarly journals LHCb: Recent results related to cosmic ray interactions

2019 ◽  
Vol 208 ◽  
pp. 15005
Author(s):  
Hans P. Dembinski
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Cosmic Ray ◽  
Forward Direction ◽  
Collective Effects ◽  
Air Showers ◽  
Proton Proton ◽  
Hadronic Interactions ◽  
Cosmic Ray Interactions ◽  
Proton Production

The LHCb experiment is designed to study flavor physics of b and c quarks. The detector is optimized for the study of identified hadrons produced in the forward direction, which also makes LHCb very interesting for the understanding of cosmic-ray induced air showers. LHCb is analysing proton-proton, protonlead, and lead-lead collisions. As a unique feature, LHCb is also studying beam interactions with noble gases using its SMOG system. We present recent measurements of charmed mesons, which are used to obtain production cross-sections, to constrain the parton PDF, to test pomeron and multi-particle interactions, nuclear and collective effects. These mostly have an indirect impact on the modeling of hadronic interactions. Finally, we present a direct measurement of the anti-proton production in proton collisions with helium gas, which are important for the understanding of AMS-02 and PAMELA data.

Single-spin asymmetries and invariant cross sections of the high transverse-momentum inclusiveπ0production in 200 GeV/cppandp¯pinteractions

1996 ◽  
Vol 53 (9) ◽  
pp. 4747-4755 ◽  
Author(s):  
D. L. Adams ◽  
N. Akchurin ◽  
N. I. Belikov ◽  
A. Bravar ◽  
J. Bystricky ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Cross Sections ◽  
High Transverse Momentum ◽  
Spin Asymmetries ◽  
Single Spin ◽  
Single Spin Asymmetries ◽  
200 Gev
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