Gutenberg Open Science: Tau longitudinal and transverse polarizations from visible kinematics in (anti-)neutrino nucleus scattering

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-8915

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DC Field	Value	Language
dc.contributor.author	Hernández, Eliecer	-
dc.contributor.author	Nieves, Juan	-
dc.contributor.author	Sánchez, Federico	-
dc.contributor.author	Sobczyk, Joanna E.	-
dc.date.accessioned	2023-04-17T08:37:01Z	-
dc.date.available	2023-04-17T08:37:01Z	-
dc.date.issued	2022	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/8931	-
dc.description.abstract	Since the ντ (ν¯τ )AZ → τ ∓ X reaction is notoriously difficult to be directly measured, the information on the dynamics of this nuclear process should be extracted from the analysis of the energy and angular distributions of the tau decay visible products. These distributions depend, in addition to d 2σ/(dEτ d cos θτ ), on the components of the tau-polarization vector. We give, for the first time, the general expression for the outgoing hadron (pion or rho meson) energy and angular differential cross section for the sequential ντ AZ → τ −(π−ντ ,ρ−ντ )X and ν¯τ AZ → τ +(π+ν¯τ ,ρ+ν¯τ )X reactions. Though all possible nuclear reaction mechanisms contribute to the distribution, it may be possible to isolate/enhance one of them by implementing appropriate selection criteria. For the case of the quasielastic reaction off oxygen and neutrino energies below 6 GeV, we show that the pion distributions are quite sensitive to the details of the tau-polarization components. We find significant differences between the full calculation, where the longitudinal and transverse components of the tau polarization vector vary with the energy and the scattering angle of the produced tau, and the simplified scheme in which the polarizations are set to one and zero, being the latter their respective asymptotic values reached in the high energy regime. In addition to its potential impact on neutrino oscillation analyses, this result can be used to further test different nuclear models, since these observables provide complementary information to that obtained by means of the inclusive nuclear weak charged-current differential cross section. We also study the effects on the cross section of the W4 and W5 nuclear structure functions, which contributions are proportional to the charged lepton mass, and therefore difficult to constrain in muon and electron neutrino experiments.	en_GB
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	530 Physik	de_DE
dc.subject.ddc	530 Physics	en_GB
dc.title	Tau longitudinal and transverse polarizations from visible kinematics in (anti-)neutrino nucleus scattering	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-8915	-
jgu.type.contenttype	Scientific article	de
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 08 Physik, Mathematik u. Informatik	de
jgu.organisation.number	7940	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Physics letters : B	de
jgu.journal.volume	829	de
jgu.pages.alternative	137046	de
jgu.publisher.year	2022	-
jgu.publisher.name	Elsevier	de
jgu.publisher.place	Amsterdam	de
jgu.publisher.issn	1873-2445	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	530	de
jgu.publisher.doi	10.1016/j.physletb.2022.137046	de
jgu.organisation.ror	https://ror.org/023b0x485	-
jgu.subject.dfg	Naturwissenschaften	de
Appears in collections:	DFG-491381577-D

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