https://doi.org/10.1140/epja/s10050-025-01492-x
Letter
Partial-wave analysis to determine the spin of
and
produced in
annihilation
Department of Physics, BITS Pilani K K Birla Goa Campus, 403726, Zuarinagar, Goa, India
a
deepakpn@goa.bits-pilani.ac.in
Received:
22
October
2024
Accepted:
17
January
2025
Published online:
28
January
2025
Recently (The PANDA collaboration, arXiv:2201.03852v2) the PANDA collaboration studied the feasibility of determining the spin and parity of the and
resonances in the
system produced in
collisions via the reaction channel
. The present paper aims to study these reactions using a model-independent irreducible tensor formalism developed earlier. This study leads us to identify the partial-wave amplitude and the observable, which would be zero if
or
had spin-1/2, provided these resonances are produced at threshold (s-wave production).
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.