Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improved mass measurement using the boundary of many-body phase space   We show that mass measurements for new particles appearing in decay chains
can be improved by determining the boundary of the available phase space in its
full dimensionality rather than by using one-dimensional kinematic features for
each stage of the cascade decay. This is demonstrated for the case of one
particle decaying to three visible and one invisible particles in a two-stage
cascade, but our methods also apply to a more general set of decay topologies.
We show that not only mass differences, but also the overall scale of masses
can be determined with high precision without having to rely on cross section
information. The improvement arises from the properties of the higher
dimensional phase space itself, independent of the matrix element for the
decay, and it is not weakened by the presence of intermediate on-shell
particles in the cascade. Our results are particularly significant for the case
of low signal statistics, a distinct possibility for new physics searches in
the near future.

22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th