Prefer a chat interface with context about you and your work?
Experimental constraints on the spin and parity of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi><mml:mo mathvariant="bold" stretchy="false">(</mml:mo><mml:mn>4430</mml:mn><mml:msup><mml:mo mathvariant="bold" stretchy="false">)</mml:mo><mml:mo mathvariant="bold">+</mml:mo></mml:msup></mml:math>
We perform a full amplitude analysis of B0→ψ′K+π− decays, with ψ′→μ+μ− or e+e−, to constrain the spin and parity of the Z(4430)−. The JP=1+ hypothesis is favored over the 0−, 1−, 2− and 2+ hypotheses at the levels of 3.4σ, 3.7σ, 4.7σ and 5.1σ, respectively. The analysis is based on …