2,961 research outputs found
Exploring the linear space of Feynman integrals via generating functions
Deriving a comprehensive set of reduction rules for Feynman integrals has
been a longstanding challenge. In this paper, we present a proposed solution to
this problem utilizing generating functions of Feynman integrals. By
establishing and solving differential equations of these generating functions,
we are able to derive a system of reduction rules that effectively reduce any
associated Feynman integrals to their bases. We illustrate this method through
various examples and observe its potential value in numerous scenarios.Comment: 11 pages, 4 figures, references adde
A Possibility of Search for New Physics at LHCb
It is interesting to search for new physics beyond the standard model at
LHCb. We suggest that weak decays of doubly charmed baryon such as
to charmless final states would be a possible
signal for new physics. In this work, we consider two models, i.e. the
unparticle and as examples to study such possibilities. We also discuss
the cases for which have not been observed yet, but
one can expect to find them when LHCb begins running. Our numerical results
show that these two models cannot result in sufficiently large decay widths,
therefore if such modes are observed at LHCb, there must be a new physics other
than the unparticle or models.Comment: 7 pages, 3 figures, 1 table. More references and discussion adde
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