6,768 research outputs found
Linking of errata: current practices in online physical sciences journals
Reader awareness of article corrections can be of critical importance in the physical and biomedical sciences. Comparison of errata and corrigenda in online versions of high-impact physical sciences journals across titles and publishers yielded surprising variability. Of 44 online journals surveyed, 14 had no links between original articles and later corrections. When present, hyperlinks between articles and errata showed patterns in presentation style, but lacked consistency. Variability in the presentation, linking, and availability of online errata indicates that practices are not evenly developed across the field. Comparison of finding tools showed excellent coverage of errata by Science Citation Index, lack of indexing in INSPEC, and lack of retrieval with SciFinder Scholar. The development of standards for the linking of original articles to errata is recommended
Scaling ansatz with texture zeros in linear seesaw
We investigate scaling ansatz with texture zeros within the framework of
linear seesaw mechanism. In this variant of seesaw mechanism a simplified
expression of effective neutrino mass matrix containing two Dirac type
matrices ( and ) and one Majorana type matrix () is
obtained by virtue of neglecting the global symmetry breaking term in
the mass term of the Lagrangian. Along with the charged lepton mass matrix, the
matrix too, is chosen in a diagonal basis whereas a scaling relation
is incorporated in and with different scale factors. Our goal in
this work is to achieve a completely phenomenologically acceptable
generated by combinations of and containing least number of
independent parameters or maximum number of zeros. At the end of the numerical
analysis it is found that number of zeros in any of the constituent Dirac type
matrices ( and ) of cannot be greater than six in order to
meet the phenomenological requirements. The hierarchy obtained here is normal
and also the values of the two parameters sum mass () and
are below the present experimental lower limit.Comment: 18 pages, 10 tables, 1 figure, Accepted for publication in Physics
Letters
Massive vectors and loop observables: the case
We discuss the use of massive vectors for the interpretation of some recent
experimental anomalies, with special attention to the muon . We restrict
our discussion to the case where the massive vector is embedded into a
spontaneously broken gauge symmetry, so that the predictions are not affected
by the choice of an arbitrary energy cut-off. Extended gauge symmetries,
however, typically impose strong constraints on the mass of the new vector
boson and for the muon they basically rule out, barring the case of
abelian gauge extensions, the explanation of the discrepancy in terms of a
single vector extension of the standard model. We finally comment on the use of
massive vectors for -meson decay and di-photon anomalies.Comment: 25 pages, 1 figure. References added, to appear in JHE
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