Inclusive Neutral-Kaon Photoproduction on the Deuteron
Abstract
We report on our study of inclusive neutral-kaon photoproduction on the deuteron, d(γ,K0)YN, for photon energies between 0.9 and 1.1 GeV. The calculation is performed in the impulse approximation, with the deuteron wave function generated from the Bonn One-Boson-Exchange-Potential in q-space (OBEPQ) within a non-relativistic framework, while the kinematics and the elementary operator are kept relativistic. For the elementary operator we employ a recently developed isobar model that includes high-spin nucleon and Δ resonances and has been constrained by nearly 20,000 data points, and we compare its predictions systematically with those of the Kaon-Maid model. For the first time, the NKS1 and NKS2 data are subjected to a quantitative analysis within a modern elementary production framework. The New Operator provides a considerably better description of the data, whereas Kaon-Maid overestimates the measured cross section by up to a factor of four at the higher photon energies, a discrepancy that can be traced back to its unconstrained γn → K0Λ amplitude. We further show that the finite photon-energy and kaon-angle bins of the existing measurements generate a theoretical uncertainty comparable to the difference between the two models, so that a proper comparison with the data requires the calculation to be averaged over the experimental acceptance. A three-dimensional mapping of the cross section over the kaon momentum and angle reveals a narrow quasi-free ridge, accompanied by a second structure associated with the opening of the Σ channels, from which we identify the kinematics most favorable for future measurements. Finally, the tensor target asymmetries are found to be far less sensitive to the elementary operator than the cross section, and therefore probe the nuclear dynamics in a way that is complementary to the cross section.
Related
- CP violation in neutral kaon mixing in D0→ KSKS
- CP violation in neutral kaon mixing in D0 → KSKS
- Neutral kaon mass measurement with the CMD-3 derector at VEPP-2000
- Elastic deuteron-deuteron scattering in the 5S2 channel within nuclear lattice effective field theory
- Λ(1520) as a probe of resonance-driven deuteron formation at the LHC
BibTeX
@misc{mutoharoh2026inclusive,
title = {{Inclusive Neutral-Kaon Photoproduction on the Deuteron}},
author = {Mutoharoh and Agus Salam and Terry Mart},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.15006},
eprint = {2609.15006},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.15006},
}
RIS
TY - UNPB
TI - Inclusive Neutral-Kaon Photoproduction on the Deuteron
AU - Mutoharoh
AU - Agus Salam
AU - Terry Mart
PY - 2026
DA - 2026/09/14
PB - arXiv
DO - 10.48550/arxiv.2609.15006
UR - https://arxiv.org/abs/2609.15006
AB - We report on our study of inclusive neutral-kaon photoproduction on the deuteron, d(γ,K^0)YN, for photon energies between 0.9 and 1.1 GeV. The calculation is performed in the impulse approximation, with the deuteron wave function generated from the Bonn One-Boson-Exchange-Potential in q-space (OBEPQ) within a non-relativistic framework, while the kinematics and the elementary operator are kept relativistic. For the elementary operator we employ a recently developed isobar model that includes high-spin nucleon and Δ resonances and has been constrained by nearly 20,000 data points, and we compare its predictions systematically with those of the Kaon-Maid model. For the first time, the NKS1 and NKS2 data are subjected to a quantitative analysis within a modern elementary production framework. The New Operator provides a considerably better description of the data, whereas Kaon-Maid overestimates the measured cross section by up to a factor of four at the higher photon energies, a discrepancy that can be traced back to its unconstrained γn → K^0Λ amplitude. We further show that the finite photon-energy and kaon-angle bins of the existing measurements generate a theoretical uncertainty comparable to the difference between the two models, so that a proper comparison with the data requires the calculation to be averaged over the experimental acceptance. A three-dimensional mapping of the cross section over the kaon momentum and angle reveals a narrow quasi-free ridge, accompanied by a second structure associated with the opening of the Σ channels, from which we identify the kinematics most favorable for future measurements. Finally, the tensor target asymmetries are found to be far less sensitive to the elementary operator than the cross section, and therefore probe the nuclear dynamics in a way that is complementary to the cross section.
ER -