Slow-neutron production as a probe of hadron formation in high-energy reactions
Deep inelastic scattering (DIS) experiments at the planned Electron-Ion Collider will be affected by details of the hadron formation inside the nuclear volume. Besides semi-inclusive particle production experiments, decays of the target nucleus via emission of neutrons provide an additional opportunity to probe this domain. This paper reports on the hybrid dynamical + statistical calculations of low-energy neutron production in muon-induced and virtual photon-induced collisions with nuclei. We confirm the conclusion that the E665 data on neutron production in $μ^–$ + Pb DIS at 470 GeV indicate a strong suppression of the final-state interaction for hadrons with momenta above ≈1 GeV/c. Ultraperipheral heavy-ion collisions at the Large Hadron Collider (LHC) and the Relativistic Heavy Ion Collider (RHIC) can be used to test this suppression. The calculations of the neutron multiplicity distributions and $$p_t$$ spectra in photon-nucleus collisions at the energies accessible at the LHC and RHIC are presented for several models of hadron formation. We argue that studies of neutron production in ultraperipheral heavy-ion collisions open a window onto the small-$$\mathcal{x}$$ dynamics and hadron component of the photon wave function.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- FG02-93ER40771
- OSTI ID:
- 1593497
- Alternate ID(s):
- OSTI ID: 1800790
- Journal Information:
- Physical Review C, Journal Name: Physical Review C Vol. 101 Journal Issue: 1; ISSN 2469-9985
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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