Production of high-PT cumulative particles in proton-nucleus interactions at 50 GeV

TL;DR

This paper reports the first measurements of high transverse momentum cumulative particles produced in proton-nucleus interactions at 50 GeV, revealing new insights into particle production mechanisms at large momenta.

Contribution

It provides novel experimental data on cumulative particle production at high transverse momenta in proton-nucleus collisions, highlighting local production characteristics and atomic mass dependence.

Findings

First data on high-PT cumulative particles in proton-nucleus interactions.

Indication of local particle production in the cumulative domain.

Strong dependence of cross section on atomic mass, differing from low-PT behavior.

Abstract

The data on production of cumulative particles in the high transverse momenta domain (up to ~ 3.5 GeV/c) in proton-nucleus interactions are presented for the first time. An indication on the local character of particle production in the cumulative domain is obtained. The observed strong dependence of the particle production cross section on the atomic mass of the target does not fit the A - dependence obtained in the pre-cumulative and cumulative domains for low transverse momenta at constant part of the exponent. The experiment was performed at U70 (IHEP) with the extracted 50 GeV/c proton beam.