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Title: The pMSSM10 after LHC run 1

Abstract

We present a frequentist analysis of the parameter space of the pMSSM10, in which the following ten soft SUSY-breaking parameters are specified independently at the mean scalar top mass scale M SUSY ≡ √m $$\tilde{t}$$1m $$\tilde{t}$$2 : the gaugino masses M 1,2,3 , the first-and second-generation squark masses m $$\tilde{q}$$1 = m $$\tilde{q}$$2 , the third-generation squark mass m $$\tilde{q}$$3, a common slepton mass m $$\tilde{ℓ}$$ and a common trilinear mixing parameter A , as well as the Higgs mixing parameter μ , the pseudoscalar Higgs mass M A and tanβ , the ratio of the two Higgs vacuum expectation values. We use the MultiNest sampling algorithm with ~ 1.2 ×10 9 points to sample the pMSSM10 parameter space. A dedicated study shows that the sensitivities to strongly interacting sparticle masses of ATLAS and CMS searches for jets, leptons + E-slash T signals depend only weakly on many of the other pMSSM10 parameters. With the aid of the Atom and Scorpion codes, we also implement the LHC searches for electroweakly interacting sparticles and light stops, so as to confront the pMSSM10 parameter space with all relevant SUSY searches. In addition, our analysis includes Higgs mass and rate measurements using themore » HiggsSignals code, SUSY Higgs exclusion bounds, the measurements of BR(B s→μ +μ -) by LHCb and CMS, other B -physics observables, electroweak precision observables, the cold dark matter density and the XENON100 and LUX searches for spin-independent dark matter scattering, assuming that the cold dark matter is mainly provided by the lightest neutralino χ-tilde 1 0 . We show that the pMSSM10 is able to provide a supersymmetric interpretation of (g-2) μ , unlike the CMSSM, NUHM1 and NUHM2. As a result, we find (omitting Higgs rates) that the minimum χ2=20.5 with 18 degrees of freedom (d.o.f.) in the pMSSM10, corresponding to a χ2 probability of 30.8 %, to be compared with χ2/d.o.f.=32.8/24(31.1/23)(30.3/22) in the CMSSM (NUHM1) (NUHM2). We display the one-dimensional likelihood functions for sparticle masses, and we show that they may be significantly lighter in the pMSSM10 than in the other models, e.g., the gluino may be as light as ~ 1250 GeV at the 68 % CL, and squarks, stops, electroweak gauginos and sleptons may be much lighter than in the CMSSM, NUHM1 and NUHM2. We discuss the discovery potential of future LHC runs, e +e - colliders and direct detection experiments.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1212750
Report Number(s):
FERMILAB-PUB-15-100-CMS; UMN-TH-3427-15; SLAC-PUB-16245; LCTS-2015-07; KCL-PH-TH-2015-15; FTPI-MINN-15-13; DESY-15-046; CERN-PH-TH-2015-066
Journal ID: ISSN 1434-6044; arXiv eprint number arXiv:1504.03260
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 75; Journal Issue: 9; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

de Vries, K. J., Bagnaschi, E. A., Buchmueller, O., Cavanaugh, R., Citron, M., De Roeck, A., Dolan, M. J., Ellis, J. R., Flächer, H., Heinemeyer, S., Isidori, G., Malik, S., Marrouche, J., Santos, D. Martínez, Olive, K. A., Sakurai, K., and Weiglein, G. The pMSSM10 after LHC run 1. United States: N. p., 2015. Web. doi:10.1140/epjc/s10052-015-3599-y.
de Vries, K. J., Bagnaschi, E. A., Buchmueller, O., Cavanaugh, R., Citron, M., De Roeck, A., Dolan, M. J., Ellis, J. R., Flächer, H., Heinemeyer, S., Isidori, G., Malik, S., Marrouche, J., Santos, D. Martínez, Olive, K. A., Sakurai, K., & Weiglein, G. The pMSSM10 after LHC run 1. United States. https://doi.org/10.1140/epjc/s10052-015-3599-y
de Vries, K. J., Bagnaschi, E. A., Buchmueller, O., Cavanaugh, R., Citron, M., De Roeck, A., Dolan, M. J., Ellis, J. R., Flächer, H., Heinemeyer, S., Isidori, G., Malik, S., Marrouche, J., Santos, D. Martínez, Olive, K. A., Sakurai, K., and Weiglein, G. Tue . "The pMSSM10 after LHC run 1". United States. https://doi.org/10.1140/epjc/s10052-015-3599-y. https://www.osti.gov/servlets/purl/1212750.
@article{osti_1212750,
title = {The pMSSM10 after LHC run 1},
author = {de Vries, K. J. and Bagnaschi, E. A. and Buchmueller, O. and Cavanaugh, R. and Citron, M. and De Roeck, A. and Dolan, M. J. and Ellis, J. R. and Flächer, H. and Heinemeyer, S. and Isidori, G. and Malik, S. and Marrouche, J. and Santos, D. Martínez and Olive, K. A. and Sakurai, K. and Weiglein, G.},
abstractNote = {We present a frequentist analysis of the parameter space of the pMSSM10, in which the following ten soft SUSY-breaking parameters are specified independently at the mean scalar top mass scale MSUSY ≡ √m$\tilde{t}$1m$\tilde{t}$2 : the gaugino masses M1,2,3 , the first-and second-generation squark masses m$\tilde{q}$1 = m$\tilde{q}$2 , the third-generation squark mass m$\tilde{q}$3, a common slepton mass m$\tilde{ℓ}$ and a common trilinear mixing parameter A , as well as the Higgs mixing parameter μ , the pseudoscalar Higgs mass MA and tanβ , the ratio of the two Higgs vacuum expectation values. We use the MultiNest sampling algorithm with ~ 1.2 ×109 points to sample the pMSSM10 parameter space. A dedicated study shows that the sensitivities to strongly interacting sparticle masses of ATLAS and CMS searches for jets, leptons + E-slashT signals depend only weakly on many of the other pMSSM10 parameters. With the aid of the Atom and Scorpion codes, we also implement the LHC searches for electroweakly interacting sparticles and light stops, so as to confront the pMSSM10 parameter space with all relevant SUSY searches. In addition, our analysis includes Higgs mass and rate measurements using the HiggsSignals code, SUSY Higgs exclusion bounds, the measurements of BR(Bs→μ+μ-) by LHCb and CMS, other B -physics observables, electroweak precision observables, the cold dark matter density and the XENON100 and LUX searches for spin-independent dark matter scattering, assuming that the cold dark matter is mainly provided by the lightest neutralino χ-tilde10 . We show that the pMSSM10 is able to provide a supersymmetric interpretation of (g-2)μ , unlike the CMSSM, NUHM1 and NUHM2. As a result, we find (omitting Higgs rates) that the minimum χ2=20.5 with 18 degrees of freedom (d.o.f.) in the pMSSM10, corresponding to a χ2 probability of 30.8 %, to be compared with χ2/d.o.f.=32.8/24(31.1/23)(30.3/22) in the CMSSM (NUHM1) (NUHM2). We display the one-dimensional likelihood functions for sparticle masses, and we show that they may be significantly lighter in the pMSSM10 than in the other models, e.g., the gluino may be as light as ~ 1250 GeV at the 68 % CL, and squarks, stops, electroweak gauginos and sleptons may be much lighter than in the CMSSM, NUHM1 and NUHM2. We discuss the discovery potential of future LHC runs, e+e- colliders and direct detection experiments.},
doi = {10.1140/epjc/s10052-015-3599-y},
url = {https://www.osti.gov/biblio/1212750}, journal = {European Physical Journal. C, Particles and Fields},
issn = {1434-6044},
number = 9,
volume = 75,
place = {United States},
year = {2015},
month = {9}
}

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