# ICHEP 2022

Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

## Measurement of very forward photon production cross-section at pp $\sqrt{s}$ = 510 GeV with RHICf detector

Jul 8, 2022, 7:05 PM
1h 25m
Bologna, Italy

#### Bologna, Italy

Palazzo della Cultura e dei Congressi
Poster Strong interactions and Hadron Physics

### Speakers

Gianluigi Cibinetto (Istituto Nazionale di Fisica Nucleare) Hiroaki Menjo (ISEE, Nagoya University (JP))

### Description

The particle production at very forward region is described by using phenomenological models in simulators of hadronic interactions. Because of lack of experimental data at high energies, there are differences of predictions of particle production cross-section between hadronic interaction models. The interaction models are a mandatory tool for simulating air showers induced by cosmic-rays and the improvement of models is required to perform precise observation of high energy cosmic-rays.

The RHIC forward (RHICf) experiment performed an operation with proton-proton collisions at √s = 510 GeV in June 2017. In this presentation, we present the analysis result of differential cross-section measurement of photons in the pseudorapidity range of more than 6.1. The data were compared with predictions of four hadronic interaction models to test these models. In addition, Feynman scaling law was tested by comparing with the LHCf result at $\sqrt{s}$ = 7 and 13 TeV, and it was confirmed within the errors.

In-person participation No