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14 results on '"Raklev, Are"'

1. The GAMBIT Universal Model Machine: from Lagrangians to likelihoods

Author

Sanjay Bloor, Tomás E. Gonzalo, Pat Scott, Christopher Chang, Are Raklev, José Eliel Camargo-Molina, Anders Kvellestad, Janina J. Renk, Peter Athron, and Csaba Balázs

Subjects
Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, FOS: Physical sciences, QC770-798, Astrophysics, 01 natural sciences, Subatomär fysik, QB460-466, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear and particle physics. Atomic energy. Radioactivity, Subatomic Physics, 0103 physical sciences, ddc:530, 010306 general physics, Engineering (miscellaneous)
Abstract

We introduce the GAMBIT Universal Model Machine (GUM), a tool for automatically generating code for the global fitting software framework GAMBIT, based on Lagrangian-level inputs. GUM accepts models written symbolically in FeynRules and SARAH formats, and can use either tool along with MadGraph and CalcHEP to generate GAMBIT model, collider, dark matter, decay and spectrum code, as well as GAMBIT interfaces to corresponding versions of SPheno, micrOMEGAs, Pythia and Vevacious (C++). In this paper we describe the features, methods, usage, pathways, assumptions and current limitations of GUM. We also give a fully worked example, consisting of the addition of a Majorana fermion simplified dark matter model with a scalar mediator to GAMBIT via GUM, and carry out a corresponding fit., 32 pages, 6 figures, 3 tables

Published
2021

3. Xsec: the cross-section evaluation code

Author

Buckley, Andy, primary, Kvellestad, Anders, additional, Raklev, Are, additional, Scott, Pat, additional, Sparre, Jon Vegard, additional, Van den Abeele, Jeriek, additional, and Vazquez-Holm, Ingrid A., additional

Published
2020
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4. Global fits of GUT-scale SUSY models with GAMBIT

Author

The GAMBIT Collaboration, Athron, Peter, Bal��zs, Csaba, Bringmann, Torsten, Buckley, Andy, Chrz��szcz, Marcin, Conrad, Jan, Cornell, Jonathan M., Dal, Lars A., Edsj��, Joakim, Farmer, Ben, Jackson, Paul, Krislock, Abram, Kvellestad, Anders, Mahmoudi, Farvah, Martinez, Gregory D., Putze, Antje, Raklev, Are, Rogan, Christopher, de Austri, Roberto Ruiz, Saavedra, Aldo, Savage, Christopher, Scott, Pat, Serra, Nicola, Weniger, Christoph, White, Martin, Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), GAMBIT, University of Zurich, Athron, Peter, GRAPPA (ITFA, IoP, FNWI), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Centre de Recherche Astrophysique de Lyon ( CRAL ), École normale supérieure - Lyon ( ENS Lyon ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'Annecy-le-Vieux de Physique Théorique ( LAPTH ), and Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Physics and Astronomy (miscellaneous), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], chargino, supersymmetry: 3, dark matter: direct detection, Parameter space, 01 natural sciences, High Energy Physics - Phenomenology (hep-ph), S046PHC, stau, Grand Unified Theory, Physics, Large Hadron Collider, Electroweak interaction, minimal supersymmetric standard model, hep-ph, CERN LEP Stor, Supersymmetry, Nuclear & Particles Physics, High Energy Physics - Phenomenology, grand unified theory, Higgs particle: mass, astro-ph.CO, Higgs boson, neutralino: dark matter, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics and Astronomy, Particle physics, interpretation of experiments: CERN LHC Coll, Cosmology and Nongalactic Astrophysics (astro-ph.CO), 530 Physics, Dark matter, FOS: Physical sciences, lcsh:Astrophysics, 10192 Physics Institute, 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics, lcsh:QB460-466, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 3101 Physics and Astronomy (miscellaneous), 010306 general physics, 0206 Quantum Physics, Engineering (miscellaneous), Particle Physics - Phenomenology, flavor, electroweak interaction, 010308 nuclear & particles physics, dark matter: relic density, High Energy Physics::Phenomenology, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], lcsh:QC770-798, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, 2201 Engineering (miscellaneous), [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Minimal Supersymmetric Standard Model
Abstract

We present the most comprehensive global fits to date of three supersymmetric models motivated by grand unification: the Constrained Minimal Supersymmetric Standard Model (CMSSM), and its Non-Universal Higgs Mass generalisations NUHM1 and NUHM2. We include likelihoods from a number of direct and indirect dark matter searches, a large collection of electroweak precision and flavour observables, direct searches for supersymmetry at LEP and Runs I and II of the LHC, and constraints from Higgs observables. Our analysis improves on existing results not only in terms of the number of included observables, but also in the level of detail with which we treat them, our sampling techniques for scanning the parameter space, and our treatment of nuisance parameters. We show that stau co-annihilation is now ruled out in the CMSSM at more than 95\% confidence. Stop co-annihilation turns out to be one of the most promising mechanisms for achieving an appropriate relic density of dark matter in all three models, whilst avoiding all other constraints. We find high-likelihood regions of parameter space featuring light stops and charginos, making them potentially detectable in the near future at the LHC. We also show that tonne-scale direct detection will play a largely complementary role, probing large parts of the remaining viable parameter space, including essentially all models with multi-TeV neutralinos., Comment: 50 pages, 21 figures, 7 tables, v2 accepted for publication in EPJC, v3 update Zenodo link

Published
2017

7. Boosted objects: a probe of beyond the standard model physics

Author

Abdesselam, A., primary, Belyaev, A., additional, Kuutmann, E. Bergeaas, additional, Bitenc, U., additional, Brooijmans, G., additional, Butterworth, J., additional, de Renstrom, P. Bruckman, additional, Franzosi, D. Buarque, additional, Buckingham, R., additional, Chapleau, B., additional, Dasgupta, M., additional, Davison, A., additional, Dolen, J., additional, Ellis, S., additional, Fassi, F., additional, Ferrando, J., additional, Frandsen, M. T., additional, Frost, J., additional, Gadfort, T., additional, Glover, N., additional, Haas, A., additional, Halkiadakis, E., additional, Hamilton, K., additional, Hays, C., additional, Hill, C., additional, Jackson, J., additional, Issever, C., additional, Karagoz, M., additional, Katz, A., additional, Kreczko, L., additional, Krohn, D., additional, Lewis, A., additional, Livermore, S., additional, Loch, P., additional, Maksimovic, P., additional, March-Russell, J., additional, Martin, A., additional, McCubbin, N., additional, Newbold, D., additional, Ott, J., additional, Perez, G., additional, Policchio, A., additional, Rappoccio, S., additional, Raklev, A. R., additional, Richardson, P., additional, Salam, G. P., additional, Sannino, F., additional, Santiago, J., additional, Schwartzman, A., additional, Shepherd-Themistocleous, C., additional, Sinervo, P., additional, Sjoelin, J., additional, Son, M., additional, Spannowsky, M., additional, Strauss, E., additional, Takeuchi, M., additional, Tseng, J., additional, Tweedie, B., additional, Vermilion, C., additional, Voigt, J., additional, Vos, M., additional, Wacker, J., additional, Wagner-Kuhr, J., additional, and Wilson, M. G., additional

Published
2011
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9. Collider aspects of flavor physics at high Q

Author

Lari, T., primary, Pape, L., additional, Porod, W., additional, Aguilar-Saavedra, J. A., additional, Allanach, B. C., additional, Burdman, G., additional, Castro, N., additional, Klasen, M., additional, Krasnikov, N., additional, Krauss, F., additional, Moortgat, F., additional, Polesello, G., additional, Tricomi, A., additional, Ünel, G., additional, del Aguila, F., additional, Alwall, J., additional, Andreev, Y., additional, Sierra, D. Aristizabal, additional, Bartl, A., additional, Beccaria, M., additional, Béjar, S., additional, Benucci, L., additional, Bityukov, S., additional, Borjanović, I., additional, Bozzi, G., additional, Carvalho, J., additional, Clerbaux, B., additional, de Campos, F., additional, de Gouvêa, A., additional, Dennis, C., additional, Djouadi, A., additional, Éboli, O. J. P., additional, Ellwanger, U., additional, Fassouliotis, D., additional, Ferreira, P. M., additional, Frederix, R., additional, Fuks, B., additional, Gerard, J.-M., additional, Giammanco, A., additional, Gninenko, S., additional, Gopalakrishna, S., additional, Goto, T., additional, Grzadkowski, B., additional, Guasch, J., additional, Hahn, T., additional, Heinemeyer, S., additional, Hektor, A., additional, Herquet, M., additional, Herrmann, B., additional, Hidaka, K., additional, Hirsch, M. K., additional, Hohenwarter-Sodek, K., additional, Hollik, W., additional, Hou, G. W. S., additional, Hurth, T., additional, Ibarra, A., additional, Illana, J., additional, Kadastik, M., additional, Kalinin, S., additional, Karafasoulis, C., additional, Ünel, M. Karagöz, additional, Kernreiter, T., additional, Kirsanov, M. M., additional, Kou, E., additional, Kourkoumelis, C., additional, Kraml, S., additional, Kyriakis, A., additional, Lemaitre, V., additional, Macorini, G., additional, Magro, M. B., additional, Majerotto, W., additional, Maltoni, F., additional, Matveev, V., additional, Mehdiyev, R., additional, Misiak, M., additional, Moreau, G., additional, Mühlleitner, M., additional, Müntel, M., additional, Onofre, A., additional, Özcan, E., additional, Palla, F., additional, Panizzi, L., additional, Peñaranda, S., additional, Pittau, R., additional, Pukhov, A., additional, Raidal, M., additional, Raklev, A. R., additional, Rebane, L., additional, Renard, F. M., additional, Restrepo, D., additional, Roupas, Z., additional, Santos, R., additional, Schumann, S., additional, Servant, G., additional, Siegert, F., additional, Skands, P., additional, Slavich, P., additional, Solà, J., additional, Spira, M., additional, Sultansoy, S., additional, Toropin, A., additional, Tseng, J., additional, Valle, J. W. F., additional, Veloso, F., additional, Ventura, A., additional, Vermisoglou, G., additional, Verzegnassi, C., additional, Villanova del Moral, A., additional, Weiglein, G., additional, and Yılmaz, M., additional

Published
2008
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13. Gravitino Dark Matter scenarios with massive metastable charged sparticles at the LHC

Author

John Ellis, Are Raklev, and Ola Kristoffer Øye

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Dark matter, Detector, Scalar (physics), FOS: Physical sciences, Superpartner, High Energy Physics - Experiment, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Cascade, High Energy Physics::Experiment, Gravitino, Particle Physics - Phenomenology, Lepton
Abstract

We investigate the measurement of supersymmetric particle masses at the LHC in gravitino dark matter (GDM) scenarios where the next-to-lightest supersymmetric partner (NLSP) is the lighter scalar tau, or stau, and is stable on the scale of a detector. Such a massive metastable charged sparticle would have distinctive Time-of-Flight (ToF) and energy-loss ($dE/dx$) signatures. We summarise the documented accuracies expected to be achievable with the ATLAS detector in measurements of the stau mass and its momentum at the LHC. We then use a fast simulation of an LHC detector to demonstrate techniques for reconstructing the cascade decays of supersymmetric particles in GDM scenarios, using a parameterisation of the detector response to staus, taus and jets based on full simulation results. Supersymmetric pair-production events are selected with high redundancy and efficiency, and many valuable measurements can be made starting from stau tracks in the detector. We recalibrate the momenta of taus using transverse-momentum balance, and use kinematic cuts to select combinations of staus, taus, jets and leptons that exhibit peaks in invariant masses that correspond to various heavier sparticle species, with errors often comparable with the jet energy scale uncertainty., Comment: 23 pages, 10 figures, updated to version published in JHEP

Published
2006

14. Invariant mass distributions in cascade decays

Author

Are Raklev, David J. Miller, and Per Osland

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics beyond the Standard Model, Monte Carlo method, FOS: Physical sciences, Standard Model, Massless particle, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Cascade, Particle, Invariant mass, Particle Physics - Phenomenology, Spin-½
Abstract

We derive analytical expressions for the shape of the invariant mass distributions of massless Standard Model endproducts in cascade decays involving massive New Physics (NP) particles, D -> Cc -> Bbc -> Aabc, where the final NP particle A in the cascade is unobserved and where two of the particles a, b, c may be indistinguishable. Knowledge of these expressions can improve the determination of NP parameters at the LHC. The shape formulas are composite, but contain nothing more complicated than logarithms of simple expressions. We study the effects of cuts, final state radiation and detector effects on the distributions through Monte Carlo simulations, using a supersymmetric model as an example. We also consider how one can deal with the width of NP particles and with combinatorics from the misidentification of final state particles. The possible mismeasurements of NP masses through `feet' in the distributions are discussed. Finally, we demonstrate how the effects of different spin configurations can be included in the distributions., 39 pages, 14 figures (colour), JHEP class

Published
2006

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