OPTIMASS: A Package for the Minimization of Kinematic Mass Functions with Constraints - INSPIRE

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OPTIMASS: A Package for the Minimization of Kinematic Mass Functions with Constraints

Won Sang Cho
(
- Florida U. and
- IBS, Daejeon, CTPU
)
,
James S. Gainer
(
- Florida U.
)
,
Doojin Kim
(
- Florida U.
)
,
Sung Hak Lim
(
- IBS, Daejeon, CTPU and
- KAIST, Taejon
)
,
Konstantin T. Matchev
(
- Florida U.
)

Aug 3, 2015

38 pages

Published in:

JHEP 01 (2016) 026

Published: Jan 7, 2016

e-Print:

1508.00589 [hep-ph]

DOI:

10.1007/JHEP01(2016)026

Report number:

CTPU-15-09,
APCTP-PRE2015-020,
IPMU15-0115

View in:

reference search29 citations

Citations per year

Abstract: (Springer)

Reconstructed mass variables, such as M

_{2}

, M

_{2C}

, M

_{T}^{*}

, and M

_{T2}^{W}

, play an essential role in searches for new physics at hadron colliders. The calculation of these variables generally involves constrained minimization in a large parameter space, which is numerically challenging. We provide a C++ code, Optimass, which interfaces with the Minuit library to perform this constrained minimization using the Augmented Lagrangian Method. The code can be applied to arbitrarily general event topologies, thus allowing the user to significantly extend the existing set of kinematic variables. We describe this code, explain its physics motivation, and demonstrate its use in the analysis of the fully leptonic decay of pair-produced top quarks using M

_{2}

variables.

Note:

39 pages, 12 figures, (1) minor revision in section 3, (2) figure added in section 4.3, (3) reference added and (4) matched with published version

Supersymmetry
Hadron-Hadron scattering
Beyond Standard Model
top squark
Particle and resonance production
programming
hadron hadron: colliding beams
p p: interaction
mass: transverse
CERN LHC Coll

References(103)

Figures(28)

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