SciPost Submission Page
The Complex Nature of the Abnormally Weak Absorption of Cosmic Ray Hadrons in Lead Calorimeters at Super-High Energies
by Alexander S. Borisov , Evgeniya A. Kanevskaya, Mikhail G. Kogan, Rauf A. Mukhamedshin, Vitalyi S. Puchkov and Shakarmamad G. Yormamadov
Submission summary
| Submission information |
| Preprint Link: |
scipost_202208_00092v2
(pdf)
|
| Date submitted: |
2024-11-30 21:00 |
| Submitted by: |
Mukhamedshin, Rauf |
| Submitted to: |
SciPost Physics Proceedings |
| Proceedings issue: |
22nd International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2024) |
| Ontological classification |
| Academic field: |
Physics |
| Specialties: |
- High-Energy Physics - Experiment
|
| Approaches: |
Experimental, Computational, Phenomenological |
Abstract
This paper presents the joint analysis of the results of two similar experiments on the absorption of cosmic ray hadrons using deep lead calorimeters (namely, X-ray emulsion chambers) with large air gap, which were exposed at high altitudes in the Tien Shan and Pamirs mountains. It was found that Monte Carlo simulation of the both experiments allows to reproduce most of specific features of the experimental absorption curve, namely the position, amplitude and width of the peak of electromagnetic origin observed beyond the air gap, assuming that the value of cross section for the production of charm hadrons is as high as σp p→cc¯ s 8 mb at 〈ELab〉 s 75 TeV and at xLab ≳ 0.01. However, we observe at extreme depths of both calorimeters a significant excess of blackening spots (charged particle tracks) compared to the simulations, which cannot be explained by charmed particle production alone. New factors could be carefully considered, such as dark photons, which are currently being searched for by the NA62 collaboration at CERN, or strangelets.
