12,552 research outputs found
Study of and decays
We study the charmless two-body
and three-body decays. We obtain to agree with the
recent LHCb measurement. However, we find that is unable to explain the
LHCb observation of , which implies the possibility for other
contributions, such as that from the resonant decay with as a higher-wave baryon state. For
, we show that ,
which are consistent with the current data of , respectively. Our results also support the relation of ,
given by the previous study.Comment: 8 pages, 1 figure, revised version accepted by EPJ
The capacity region of classes of product broadcast channels
We establish a new outer bound for the capacity region of product broadcast
channels. This outer bound matches Marton's inner bound for a variety of
classes of product broadcast channels whose capacity regions were previously
unknown. These classes include product of reversely semi-deterministic and
product of reversely more-capable channels. A significant consequence of this
new outer bound is that it establishes, via an example, that the previously
best known outer-bound is strictly suboptimal for the general broadcast
channel. Our example is comprised of a product broadcast channel with two
semi-deterministic components in reverse orientation.Comment: full version of isit pape
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