By leveraging the physics of the Higgs branch, we argue that the conformal central chargesandof an arbitrary 4Dsuperconformal field theory (SCFT) are rational numbers. Our proof of the rationality ofis conditioned on a well-supported conjecture about how the Higgs branch of an SCFT is encoded in its protected chiral algebra. To establish the rationality of, we further rely on a widely believed technical assumption on the high-temperature limit of the superconformal index.
This content will become publicly available on November 1, 2025
Measuring deeply virtual Compton scattering (DVCS) on the neutron is one of the necessary steps to understand the structure of the nucleon in terms of generalized parton distributions (GPDs). Neutron targets play a complementary role to transversely polarized proton targets in the determination of the GPD. This poorly known and poorly constrained GPD is essential to obtain the contribution of the quarks’ angular momentum to the spin of the nucleon. DVCS on the neutron was measured for the first time selecting the exclusive final state by detecting the neutron, using the Jefferson Lab longitudinally polarized electron beam, with energies up to 10.6 GeV, and the CLAS12 detector. The extracted beam-spin asymmetries, combined with DVCS observables measured on the proton, allow a clean quark-flavor separation of the imaginary parts of the Compton form factorsand.
- Award ID(s):
- 2012826
- PAR ID:
- 10564684
- Author(s) / Creator(s):
- ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »
- Publisher / Repository:
- Phys Rev Letters
- Date Published:
- Journal Name:
- Physical Review Letters
- Volume:
- 133
- Issue:
- 21
- ISSN:
- 0031-9007
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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