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Evidence of the nontrivial nature of the alignment phenomenon at superhigh energiesстатья
- Авторы: Борисов А.С., Ильюшина Е.А., Курушин А.В.
- Журнал: International Journal of Modern Physics A
- Год издания: 2025
- Издательство: World Scientific Publishing Co
- Местоположение издательства: Singapore
- Аннотация: cosmic rays using X-ray emulsion chambers located at mountain altitudes (‘Pamir’experiment). Ithas been confirmed that, using the χ_ij and z_ik metrics for cluster analysis, it is possible to collectproducts, i.e., particles produced in the last strong interactions which directly contribute to the family,into individual separate clusters with the efficiency as high as >80%. It means that applying thegiven clustering procedure it is possible to “rejuvenate”gamma families and move on to analyzingthe characteristics of particles from the previous generation of the nuclear-electromagnetic cascade(NEC) that generates the observed gamma families in the Earth’s atmosphere. This approachwas used to study an unusual effect associated with the coplanar emission of the most energeticparticles produced in nuclear interactions at ultra-high energies, leading to a linear alignment ofthe most energetic structures in the target gamma-ray family diagram. This effect was first discoveredin the Pamir experiment, which still holds the world championship in the number of recordedaligned events. The work shows that the proposed method of clustering gamma families increasesthe efficiency of identifying aligned structures, thereby increasing the statistics of unusual events.An analysis of the ultimate anisotropy of the most energetic clusters, carried out using the λ parameter,allows us to confirm the nontrivial nature of the alignment effect observed in cosmic rays,which may indicate the existence of processes that go beyond the Standard Model. If the alignmentobserved in experimental gamma families were random in nature, it would be impossible to obtaina significant increase in the proportion of aligned events precisely at those critical values ofχ_c and z_c that correspond to the optimal collection of the products of the last and penultimatestrong NEC interactions, as well as the optimal collection of particles from the decay of neutralpions, respectively.
- Добавил в систему: Ильюшина Елена Алексеевна