Search

Check mate is a framework that allows the user to conveniently test simulated BSM physics events against current LHC data in order to derive exclusion limits. For this purpose, the data runs through a detector simulation and is then processed by a user chosen selection of experimental analyses. These analyses are all defined by signal regions that can be compared to the experimental data with a multitude of statistical tools. Due to the large and continuously growing number of experimental analyses available, users may quickly find themselves in the situation that the study they are particularly interested in has not (yet) been implemented officially into the Check mate framework. However, the code includes a rather simple framework to allow users to add new analyses on their own. This document serves as a guide to this. In addition, Check mate serves as a powerful tool for testing and implementing new search strategies. To aid this process, many tools are included to allow a rapid prototyping of new analyses. Website: http://checkmate.hepforge.org/ Program summary Program title: CheckMATE, AnalysisManager Catalogue identifier: AEUT_v1_1 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEUT_v1_1.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 181436 No. of bytes in distributed program, including test data, etc.: 2169369 Distribution format: tar.gz Programming language: C++, Python. Computer: PC, Mac. Operating system: Linux, Mac OS. Catalogue identifier of previous version: AEUT_v1_0 Journal reference of previous version: Comput. Phys. Comm. 187(2015)227 Classification: 11.9. External routines: ROOT, Python, Delphes (included with the distribution) Does the new version supersede the previous version?: Yes Nature of problem: The LHC has delivered a wealth of new data that is now being analysed. Both ATLAS and CMS have performed many searches for new physics that theorists are eager to test their model against. However, tuning the detector simulations, understanding the particular analysis details and interpreting the results can be a tedious and repetitive task. Furthermore, new analyses are being constantly published by the experiments and might be not yet included in the official CheckMATE distribution. Solution method: The AnalysisManager within CheckMATE framework allows the user to easily include new experimental analyses as they are published by the collaborations. Furthermore, completely novel analyses can be designed and added by the user in order to test models at higher centre-of-mass energy and/or luminosity. Reasons for new version: New features, bug fixes, additional validated analyses. Summary of revisions: New kinematic variables M_CT, M_T2bl, m_T, alpha_T, razor; internal likelihood calculation; missing energy smearing; efficiency tables; validated tau-tagging; improved AnalysisManager and code structure; new analyses; bug fixes. Restrictions: Only a subset of available experimental results have been implemented. Additional comments: Checkmate is built upon the tools and hard work of many people. If Checkmate is used in your publication it is extremely important that all of the following citations are included, • Delphes 3 [1]. • FastJet [2,3]. • Anti- k t jet algorithm [4]. • CL s prescription [5]. • In analyses that use the M T 2 kinematical discriminant we use the Oxbridge Kinetics Library [6,7] and the algorithm developed by Cheng and Han [8] which also includes the M T 2 b l variable [9]. • In analyses that use the M C T family of kinematical discriminants we use MctLib [10,11] which also includes the M C T ⊥ and M C T I I variables [12]. • All experimental analyses that were used to set limits in the study. • The Monte Carlo event generator that was used. Running time: The running time scales about linearly with the number of input events provided by the user. The detector simulation/analysis of 20000 events needs about 50s/1s for a single core calculation on an Intel Core i5-3470 with 3.2 GHz and 8 GB RAM. References: [1] J. de Favereau, C. Delaere, P Demin, A. Giammanco, V. Lematre, et al., “DELPHES 3, A modular framework for fast simulation of a generic collider experiment”, 2013. [2] M. Cacciari, G. P Salam, and G. Soyez, “FastJet User Manual”, Eur. Phys. J., vol. C72, p. 1896, 2012. [3] M. Cacciari and G. P Salam, ”Dispelling the N3 myth for the kt jet-finder”, Phys. Lett., vol. B641, pp. 57–61, 2006. [4] M. Cacciari, G. P Salam, and G. Soyez, “The Anti-k(t) jet clustering algorithm”, JHEP, vol. 0804, p. 063, 2008. [5] A. L. Read, “Presentation of search results: the cl’s technique”, Journal of Physics G: Nuclear and Particle Physics, vol. 28, no. 10, p. 2693, 2002. [6] C. Lester and D. Summers, “Measuring masses of semiinvisibly decaying particles pair produced at hadron colliders”, Phys. Lett., vol. B463, pp. 99–103, 1999. [7] A. Barr, C. Lester, and P Stephens, “m(T2): The Truth behind the glamour”, J. Phys., vol. G29, pp. 2343–2363, 2003. [8] H.-C. Cheng and Z. Han, “Minimal Kinematic Constraints and m(T2)”, JHEP, vol. 0812, p. 063, 2008. [9] Y. Bai, H.-C. Cheng, J. Gallicchio, and J. Gu, “Stop the Top Background of the Stop Search”, JHEP, vol. 1207, p. 110, 2012. [10] D. R. Tovey, “On measuring the masses of pair-produced semi-invisibly decaying particles at hadron colliders”, JHEP, vol. 0804, p. 034, 2008. [11] G. Polesello and D. R. Tovey, “Supersymmetric particle mass measurement with the boost-corrected contransverse mass”, JHEP, vol. 1003, p. 030, 2010. [12] K. T. Matchev and M. Park, “A General method for determining the masses of semi-invisibly decaying particles at hadron colliders”, Phys. Rev. Lett., vol. 107, p. 061801, 2011. [ABSTRACT FROM AUTHOR]

We present the latest developments to the CheckMATE program that allows models of new physics to be easily tested against the recent LHC data. To achieve this goal, the core of CheckMATE now contains over 60 LHC analyses of which 12 are from the 13 TeV run. The main new feature is that CheckMATE 2 now integrates the Monte Carlo event generation via MadGraph5_aMC@NLO and Pythia 8 . This allows users to go directly from a SLHA file or UFO model to the result of whether a model is allowed or not. In addition, the integration of the event generation leads to a significant increase in the speed of the program. Many other improvements have also been made, including the possibility to now combine signal regions to give a total likelihood for a model. Program summary Program Title: CheckMATE Program Files doi: http://dx.doi.org/10.17632/k4pnk5wrfm.1 Licensing provisions: GPLv3 Programming language: C++, Python External routines/libraries: ROOT, Python, HepMC (optional) Pythia 8 (optional), Madgraph5_aMC@NLO (optional) Subprograms used: Delphes Nature of problem: The LHC experiments have performed a huge number of searches for new physics in the past few years. However the results can only be given for a few benchmark models out of the huge number that exist in the literature. Solution method: CheckMATE is a program that automatically calculates limits for new physics models. The original version required the user to generate Monte Carlo events themselves before CheckMATE could be run but the new version now integrates this step. The simplest output of CheckMATE is whether the model is ruled out at 95% CLs or not. However, more complicated statistical metrics are also available, including the combination of many signal regions. Restrictions: Only a subset of available experimental results have been implemented. Additional comments: • CheckMATE is built upon the tools and hard work of many people. If CheckMATE is used in your publication it is extremely important that all of the following citations are included, – Delphes 3 [1]. https://cp3.irmp.ucl.ac.be/projects/delphes – FastJet [2,3]. http://fastjet.fr/ – Anti- k t jet algorithm [4]. – CL S prescription [5]. – All experimental analyses that were used to set limits in the study and if the analysis was implemented by non- CheckMATE authors, the relevant implementation reference. – MadGraph5_aMC@NLO [6] if it is used to calculate the hard matrix element from within CheckMATE . https://launchpad.net/mg5amcnlo – Pythia 8.2 [7] if showering or matching is done from within CheckMATE . http://home.thep.lu.se/~torbjorn/Pythia.html – The Monte Carlo event generator that was used if .hepmc or .lhe files were generated externally. – In analyses that use the m T 2 kinematical discriminant [8,9] we use the mt2_bisect library [10]. We also include the M T 2 b ℓ and M T 2 W derivatives [11]. http://particle.physics.ucdavis.edu/hefti/projects/doku.php?id=wimpmass https://sites.google.com/a/ucdavis.edu/mass/ – In analyses that use the M C T family of kinematical discriminants we use the MctLib library that includes the following variables, M C T [12], M C T corrected [13], M C T parallel and perpendicular [14]. https://mctlib.hepforge.org/ – In analyses that use topness variable we use the topness library [15]. https://github.com/michaelgraesser/topness – Super-Razor [16] in analyses that use this variable. [1] J. de Favereau et al. [DELPHES 3 Collaboration], JHEP 1402 (2014) 057 [arXiv:1307.6346 [hep-ex]]. [2] M. Cacciari, G. P. Salam and G. Soyez, Eur. Phys. J. C 72 (2012) 1896 [arXiv:1111.6097 [hep-ph]]. [3] M. Cacciari and G. P. Salam, Phys. Lett. B 641 (2006) 57 [hep-ph/0512210]. [4] M. Cacciari, G. P. Salam and G. Soyez, JHEP 0804 (2008) 063 [arXiv:0802.1189 [hep-ph]]. [5] A. L. Read, J. Phys. G 28 (2002) 2693. [6] J. Alwall et al., JHEP 1407 (2014) 079 [arXiv:1405.0301 [hep-ph]]. [7] T. Sjöstrand et al., Comput. Phys. Commun. 191 (2015) 159 [arXiv:1410.3012 [hep-ph]]. [8] C. G. Lester and D. J. Summers, Phys. Lett. B 463 (1999) 99 [hep-ph/9906349]. [9] A. Barr, C. Lester and P. Stephens, J. Phys. G 29 (2003) 2343 [hep-ph/0304226]. [10] H. C. Cheng and Z. Han, JHEP 0812 (2008) 063 [arXiv:0810.5178 [hep-ph]]. [11] Y. Bai, H. C. Cheng, J. Gallicchio and J. Gu, JHEP 1207 (2012) 110 [arXiv:1203.4813 [hep-ph]]. [12] D. R. Tovey, JHEP 0804 (2008) 034 [arXiv:0802.2879 [hep-ph]]. [13] G. Polesello and D. R. Tovey, JHEP 1003 (2010) 030 [arXiv:0910.0174 [hep-ph]]. [14] K. T. Matchev and M. Park, Phys. Rev. Lett. 107 (2011) 061801 [arXiv:0910.1584 [hep-ph]]. [15] M. L. Graesser and J. Shelton, Phys. Rev. Lett. 111 (2013) no.12, 121802 [arXiv:1212.4495 [hep-ph]]. [16] M. R. Buckley, J. D. Lykken, C. Rogan and M. Spiropulu, Phys. Rev. D 89 (2014) no.5, 055020 [arXiv:1310.4827 [hep-ph]]. [ABSTRACT FROM AUTHOR]

In the first three years of running, the LHC has delivered a wealth of new data that is now being analysed. With over 20 fb −1 of integrated luminosity, both ATLAS and CMS have performed many searches for new physics that theorists are eager to test their model against. However, tuning the detector simulations, understanding the particular analysis details and interpreting the results can be a tedious task. Check mate (Check Models At Terascale Energies) is a program package which accepts simulated event files in many formats for any model. The program then determines whether the model is excluded or not at 95% C.L. by comparing to many recent experimental analyses. Furthermore the program can calculate confidence limits and provide detailed information about signal regions of interest. It is simple to use and the program structure allows for easy extensions to upcoming LHC results in the future. Program summary Program title: CheckMATE Catalogue identifier: AEUT_v1_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEUT_v1_0.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 179960 No. of bytes in distributed program, including test data, etc.: 6089336 Distribution format: tar.gz Programming language: C++, Python. Computer: PC, Mac. Operating system: Linux, Mac OS. RAM: Bytes Classification: 11.9. External routines: ROOT, Python, Delphes (included with the distribution) Nature of problem: The LHC has delivered a wealth of new data that is now being analysed. Both ATLAS and CMS have performed many searches for new physics that theorists are eager to test their model against. However, tuning the detector simulations, understanding the particular analysis details and interpreting the results can be a tedious and repetitive task. Solution method: CheckMATE is a program package which accepts simulated event files in many formats for any model. The program then determines whether the model is excluded or not at 95% C.L. by comparing to many recent experimental analyses. Furthermore the program can calculate confidence limits and provide detailed information about signal regions of interest. It is simple to use and the program structure allows for easy extensions to upcoming LHC results in the future. Restrictions: Only a subset of available experimental results have been implemented. Additional comments: Checkmate is built upon the tools and hard work of many people. If Checkmate is used in your publication it is extremely important that all of the following citations are included, • Delphes 3 [1]. • FastJet [2, 3]. • Anti-kt jet algorithm [4]. • C L s prescription [5]. • In analyses that use the MT2 kinematical discriminant we use the Oxbridge Kinetics Library [6, 7] and the algorithm developed by Cheng and Han [8]. • All experimental analyses that were used to set limits in the study. • The Monte Carlo event generator that was used. Running time: The running time scales about linearly with the number of input events provided by the user. The detector simulation/analysis of 20000 events needs about 50 s/1 s for a single core calculation on an Intel Core i5-3470 with 3.2 GHz and 8 GB RAM. References: [1] J. de Favereau, C. Delaere, P. Demin, A. Giammanco, V. Lematre, et al., DELPHES 3, A modular framework for fast simulation of a generic collider experiment arXiv:1307.6346 . [2] M. Cacciari, G.P. Salam, G. Soyez, FastJet User Manual, Eur. Phys. J. C72 (2012) 1896. arXiv:1111.6097 , http://dx.doi.org/10.1140/epjc/s10052-012-1896-2 . [3] M. Cacciari, G.P. Salam, Dispelling the N 3 myth for the k t jet-finder, Phys. Lett. B641 (2006) 57–61. arXiv:hep-ph/0512210 , http://dx.doi.org/10.1016/j.physletb.2006.08.037 . [4] M. Cacciari, G.P. Salam, G. Soyez, The Anti-k(t) [ABSTRACT FROM AUTHOR]