تقرير
OPTIMASS: A Package for the Minimization of Kinematic Mass Functions with Constraints
| العنوان: | OPTIMASS: A Package for the Minimization of Kinematic Mass Functions with Constraints |
|---|---|
| المؤلفون: | Cho, Won Sang, Gainer, James S., Kim, Doojin, Lim, Sung Hak, Matchev, Konstantin T., Moortgat, Filip, Pape, Luc, Park, Myeonghun |
| سنة النشر: | 2015 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment |
| الوصف: | Reconstructed mass variables, such as $M_2$, $M_{2C}$, $M_T^\star$, 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 and thus allows the user to significantly extend the existing set of kinematic variables. We describe this code and its physics motivation, and demonstrate its use in the analysis of the fully leptonic decay of pair-produced top quarks using the $M_2$ variables. Comment: 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 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP01(2016)026 |
| URL الوصول: | http://arxiv.org/abs/1508.00589 |
| رقم الأكسشن: | edsarx.1508.00589 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP01(2016)026 |
|---|