LAB observables for the muon polarization in K+->pi(+)mu(+)mu(-)
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LAB observables for the muon polarization in K+->pi(+)mu(+)mu(-)

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LAB observables for the muon polarization in K+->pi(+)mu(+)mu(-)

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dc.contributor.author Gómez Dumm, Daniel
dc.contributor.author Vidal Perona, Jorge
dc.date.accessioned 2014-01-31T08:54:56Z
dc.date.available 2014-01-31T08:54:56Z
dc.date.issued 1999
dc.identifier.uri http://dx.doi.org/10.1016/S0370-2693(99)00997-1
dc.identifier.uri http://hdl.handle.net/10550/32685
dc.description.abstract We analyse the muon longitudinal polarization asymmetry Delta(long) in the decay K+ --> pi(+)mu(+)mu(-). It is stressed that, since the muon helicities are not Lorentz-invariant quantities, the magnitude of Delta(long) depends in general on the reference frame. We consider the muon helicities in the LAB system, and study the sensitivity of the longitudinal polarization asymmetry to the flavour-mixing parameters in the Standard Model for stopped and in-flight decaying K+. A similar analysis is carried out for the decay K-L --> mu(+)mu(-). We find that in both cases the asymmetry is diluted when increasing the energy of the decaying kaons.
dc.relation.ispartof Physics Letters B, 1999, vol. 463, num. 2-4, p. 309-316
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Gómez Dumm, Daniel Vidal Perona, Jorge 1999 LAB observables for the muon polarization in K+->pi(+)mu(+)mu(-) Physics Letters B 463 2-4 309 316
dc.subject Partícules (Física nuclear)
dc.title LAB observables for the muon polarization in K+->pi(+)mu(+)mu(-)
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-01-31T08:54:56Z
dc.identifier.doi http://dx.doi.org/10.1016/S0370-2693(99)00997-1
dc.identifier.idgrec 093024

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