A new single two-component spinor formulation for continuous-spin particles allows straightforward amplitudes, shows infinite-spin limit of massive amplitudes with exponentiation, and yields nontrivial collinear amplitudes constrained by a dimensionful CSP parameter.
Porrati, Phys
2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We present a model-independent argument showing that massless particles interacting with gravity in a Minkowski background space can have at most spin two. This result is proven by extending a famous theorem due to Weinberg and Witten to theories that do not possess a gauge-invariant stress-energy tensor.
years
2026 2verdicts
UNVERDICTED 2representative citing papers
A massless complex scalar pair with purely left-handed vector coupling exactly reproduces the Michel distribution and its extensions, while all other invisible pairs of spin up to 2 produce distinguishable kinematic signatures.
citing papers explorer
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Spinor-helicity formalism for continuous-spin particles
A new single two-component spinor formulation for continuous-spin particles allows straightforward amplitudes, shows infinite-spin limit of massive amplitudes with exponentiation, and yields nontrivial collinear amplitudes constrained by a dimensionful CSP parameter.
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Can a Nonstandard Invisible Pair Mimic the Michel Distribution?
A massless complex scalar pair with purely left-handed vector coupling exactly reproduces the Michel distribution and its extensions, while all other invisible pairs of spin up to 2 produce distinguishable kinematic signatures.