Searches for supersymmetric particles in e + e- collisions up to 208 GeV and interpretation of the results within the MSSM

Abdallah, J.; Nawrocki, K.; Eldik, J. Van; Crennell, D.; Zimine, N. I.; Augustinus, A.; Johansson, Erik; Nicolaidou, R.; Barbier, R.; Treille, D.; Gazis, E. N.; Haag, C.; Brenner, R.; Vegni, G.; Ouraou, A.; Marco, R.; Timmermans, J.; Cieślik, K.; Nassiakou, M.; Kjaer, N. J.; Pape, L.; Smadja, G.; Moreno, S. Carrillo; Anjos, N.; Herr, H.; Chung, S. U.; Roudeau, P.; Rosenberg, E. I.; Montenegro, J.; Valenti, G.; Grosdidier, G.; Poireau, V.; Amato, S.; Salt, J.; Mastroyiannopoulos, N.; Lemonne, J.; Chliapnikov, P.; Řídký, J.; Min, A. De; Tyapkin, I. A.; Lotto, B. De; Haug, S.; Berntzon, L.; Murray, W. J.; Boyko, I. R.; Krumstein, Z.; Zalewska, A.; Hedberg, V.; Simone, A. Di; Boer, W. De; Adžić, P.; Katsanevas, S.; Becks, K. H.; Tabarelli, T.; Yushchenko, O.; Guy, J.; Gavillet, Ph.; Battaglia, M.; Navarria, F. L.; Palacios, J.; Costa, M. J.; Fassouliotis, D.; Onofre, A.; Papadopoulou, Th. D.; Stanitzki, M. M.; Smirnova, O.; Sekulin, R.; Paiano, S.; Parodi, F.; Szczekowski, M.; Albrecht, Thomas; Cuevas, J.; Elsing, M.; García, C.; Ryabtchikov, D.; Adam, W.; Doroba, K.; Passeri, A.; Graziani, E.; Romero, A.; Bonesini, M.; Ciaccio, L. Di; Cavallo, F. R.; Verbeure, F.; Vulpen, I. van; Lesiak, T.; Kluit, P.; Fulda-Quenzer, F.; Kouznetsov, O.; Stocchi, A.; Oyanguren, A.; Mönig, K.; Malek, A.; Obraztsov, V.; Pierre, F.; Chapkin, M.; Margoni, M.; Marco, J.; Tomé, B.; Rovelli, T.; Alemany–Fernández, R.; Meyer, W. T.; Chudoba, J.; Arnoud, Y.; Crawley, Brian; Podobnik, T.; Bouquet, B.; Marin, J. C.; Read, A. L.; Mazzucato, F.; Buschmann, P.; Orava, R.; Mazzucato, M.; Lyons, L.; Tkatchev, L. G.; Åsman, B.; Camporesi, T.; Contri, R.; Pukhaeva, N.; Holt, P. J.; Muenich, K.; Paula, L. De; Wickens, J.; Tzamarias, S.; Carena, F.; Antilogus, P.; Besson, N.; Bračko, M.; Cosme, G.; Wicke, D.; Kerševan, B. P.; Renton, P.; Piedra, J.; Gokieli, R.; Leder, G.; Benvenuti, A. C.; Andringa, S.; Brunet, J. M.; Apel, W. D.; Bérat, C.; Ledroit, F.; Ramler, L.; Vilanova, D.; Mariotti, C.; Piotto, E.; Fanourakis, G.; Matorras, F.; Sopczak, A.; Polok, G.; Szeptycka, M.; Lepeltier, V.; Joram, C.; Blöch, D.; Pałka, H.; Myklebust, T.; Ferro, F.; Hansen, J. R.; Ekelöf, T.; Pozdniakov, V.; Dris, M.; Mitaroff, W.; Kernel, G.; Mulders, M.; Morettini, P.; Trávničék, P.; Abreu, P.; Martínez-Rivero, C.; Rehn, J.; Jackson, J. N.; Kiiskinen, A.; Charpentier, Ph.; Perepelitsa, V.; Reinhardt, R.; Sisakian, A. N.; Sokolov, A.; Mjoernmark, U.; Vitale, L.; Taffard, A.; Lipniacka, A.; Weiser, C.; Besançon, M.; Canale, V.; Moraes, D.; Todorovova, S.; Matteuzzi, C.; MacNaughton, J.; Bambade, P.; Holmgren, S. O.; Zalewski, P.; Winter, M.; Eigen, G.; Katsoufis, E.; Troncon, C.; Rivero, M.; Lysebetten, A. Van; Checchia, P.; Allport, P. P.; Baroncelli, A.; Pieri, L.; Dalmau, J.; Sadovsky, A.; Jungermann, L.; D’Hondt, J.; Myatt, G.; Booth, P.S.L.; Blom, M.; Boonekamp, M.; Župan, M.; Passon, O.; Schwickerath, U.; Santo, M. C. Espírito; McNulty, R.; Strauss, J.; Hamacher, K.; Borisov, G.; Mašík, J.; Rodríguez, D.; Begalli, M.; King, B. T.; Botner, O.; Pimenta, M.; Moch, M.; Leitner, R.; Kourkoumelis, C.; Uvarov, V.; Angelis, A. De; Rebecchi, P.; Grzelak, K.; Veloso, F.; Liebig, W.; Hultqvist, K.; Migliore, E.; Trochimczuk, M.; Stugu, B.; Silva, T. da; Parkes, C.; Allmendinger, T.; Tortosa, P.; Gandelman, M.; Fernández, J. P.; Ricca, G. Della; Zintchenko, A.; Tyapkin, P.; Moa, T.; Chierici, R.; Sosnowski, R.; Berggren, M.; Meroni, C.; Loukas, D.; Jönsson, P.; Obłąkowska-Mucha, A.; Tristram, G.; Vénus, W.; Mundim, L.; Ronchese, P.; Liko, D.; Monge, R.; Olshevski, A. G.; Kokkinias, P.; Jarlskog, G.; Brückman, P.; Spassov, T.; Flagmeyer, U.; Dam, P. Van; Reid, D.; Peralta, L.; Perrotta, A.; Lopes, J. H.; Μάρκου, Α.; Tobin, M.; Barker, G. J.; Leinonen, L.; Cossutti, F.; Mandl, F.; Baubillier, M.; Petrolini, A.; Drees, J.; Zhuravlov, V.; Salmi, L.; Maria, N. De; Bugge, L.; Gonçalves, P.; Silva, W. Da; Savoy-Navarro, A.; Hamilton, K.; Amapane, N.; Castro, N. F.; Ask, S.; Golob, B.; Calvi, M.; Johansson, P.; Bardin, D. Y.; Hoffman, J.; Lopez, J. M.; Jeans, D.; Collins, P.; Washbrook, A.; Clercq, C. De; Anashkin, E.; Remortel, N. Van; Parzefall, U.; Nikolenko, M.; Amaldi, U.; Bluj, M.; Ruhlmann-Kleider, V.; Augustin, J. E.; Verdier, P.; Wilkinson, G.; Verzi, V.; Zavrtanik, D.; Hennecke, M.; Witek, M.; Houlden,; Lämsä, J.; Rameš, J.; Segar, A. M.; Ferrer, A.; Fokitis, E.; Hallgren, A.; Hauler, F.; Kapusta, F.; Jarry, P.; Feindt, M.; Andreazza, A.; Turluer, M. L.; Tonazzo, A.; Poropat, P.; Vrba, V.; Bertrand, Daniel; Richard, F.; Maréchal, B.; Pullia, A.; Behrmann, A.; Brodet, E.; Ben-Haim, E.; Fuster, J.; Alderweireld, T.; Gómez-Ceballos, G.; Österberg, K.; Muêller, U.; Ellert, M.; Foeth, H.; Kucharczyk, M.; Benekos, N.; Bowcock, T. J. V.; Baillon, P.; Pol, M. E.; Paganoni, M.; Tegenfeldt, F.; Maltezos, S.; Muryn, B.; Siebel, M.; Ballestrero, A.; Wahlen, H.; Szumlak, T.; Lutz, P.

doi:10.1140/epjc/s2003-01355-5

Cited by 215 publications

(136 citation statements)

References 42 publications

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“…These are notably constraints from LEP on the invisible Z width, from searches for charginos and associate production of neutralinos by DELPHI [65] and OPAL [66], and from searches for MSSM Higgs bosons [67] (which are relevant for a lighter mostly singletlike scalar). Relevant constraints from the LHC stem from the ATLAS and CMS combinations of Standard Model-like Higgs boson production and decay rates [68], which constrain possible exotic decays into pairs of NMSSM-like scalars, pseudoscalars or singlinos with masses below ∼ 60 GeV.…”

Section: Jhep02(2017)051mentioning

confidence: 99%

“…Of course, fine tuning would be required in order to obtain a relic density within the present ∼ 2% accuracy of the combined WMAP/Planck measurements, but this cannot be blamed to the theory. ), constraints from DELPHI [65] and OPAL [66] on Z * → χ 0 1 + χ 0 2,3 production require that the higgsino component of χ 0 1 is very small, which implies small couplings to Z and H 125 . Accordingly 2M χ 0 1 has to be very close to the corresponding poles for M χ ± 1 < ∼ 130 GeV.…”

Section: Jhep02(2017)051mentioning

confidence: 99%

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Present status and future tests of the higgsino-singlino sector in the NMSSM

Ellwanger

2017

J. High Energ. Phys.

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Abstract:The light higgsino-singlino scenario of the NMSSM allows to combine a naturally small µ parameter with a good dark matter relic density. Given the new constraints on spin-dependent and spin-independent direct detection cross sections in 2016 we study first which regions in the plane of chargino-and LSP-masses below 300 GeV remain viable. Subsequently we investigate the impact of searches for charginos and neutralinos at the LHC, and find that the limits from run I do not rule out any additional region in this plane. Only the HL-LHC at 3000 fb −1 will test parts of this plane corresponding to higgsino-like charginos heavier than 150 GeV and relatively light singlinos, but notably the most natural regions with lighter charginos seem to remain unexplored.

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Section: Jhep02(2017)051mentioning

confidence: 99%

Section: Jhep02(2017)051mentioning

confidence: 99%

Present status and future tests of the higgsino-singlino sector in the NMSSM

Ellwanger

2017

J. High Energ. Phys.

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“…In the SUSY models with gaugino mass unification at the Grand Unified Theory (GUT) scale, a relation between the bino and wino mass follows at the electroweak scale: M 1 = 5 3 tan 2 θ W M 2 ≈ 0.5M 2 (see e.g., [12]) which, after mixing, translates into a charginoneutralino mass relation. Therefore, a lower limit on the lightest neutralino ( χ 0 1 ) mass of about 46 GeV can be derived for these models from the Large Electron Positron (LEP) chargino mass limit [13,14], whereas in the constrained MSSM (cMSSM) [15] with both gaugino and sfermion mass unification, this limit increases to well above 100 GeV from the strong constraints set by the recent LHC data [5].…”

Section: Jhep06(2013)113mentioning

confidence: 99%

“…We include in our analysis the latest experimental results for SUSY searches from the LHC [26,27] which now supersede the Tevatron results [69,70], in addition to the existing LEP limits [13,14], wherever applicable. We also include the latest astrophysical/cosmological constraints for a WIMP DM from the 9-year WMAP data [71] as well as the very recently released Planck data [72].…”

Section: Jhep06(2013)113mentioning

confidence: 99%

Naturalness of light neutralino dark matter in pMSSM after LHC, XENON100 and Planck data

Bœhm

Dev²,

Mazumdar³

et al. 2013

J. High Energ. Phys.

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Abstract:We examine the possibility of a light (below 46 GeV) neutralino dark matter (DM) candidate within the 19-parameter phenomenological Minimal Supersymmetric Standard Model (pMSSM) in the light of various recent experimental results, especially from the LHC, XENON100, and Planck. We also study the extent of electroweak fine-tuning for such a light neutralino scenario in view of the null results from the searches for supersymmetry so far. Using a Markov Chain Monte Carlo likelihood analysis of the full pMSSM parameter space, we find that a neutralino DM with mass 10 GeV can in principle still satisfy all the existing constraints. Our light neutralino solutions can be broadly divided into two regions: (i) The solutions in the 10-30 GeV neutralino mass range are highly finetuned and require the existence of light selectrons (below 100 GeV) in order to satisfy the observed DM relic density. We note that these are not yet conclusively ruled out by the existing LEP/LHC results, and a dedicated analysis valid for a non-unified gaugino mass spectrum is required to exclude this possibility. (ii) The solutions with low fine-tuning are mainly in the 30-46 GeV neutralino mass range. However, a major portion of it is already ruled out by the latest XENON100 upper limits on its spin-independent direct detection cross section, and the rest of the allowed points are within the XENON1T projected limit. Thus, we show that the allowed MSSM parameter space for a light neutralino DM below the LEP limit of 46 GeV, possible in supersymmetric models without gaugino mass unification, could be completely accessible in near future. This might be useful in view of the recent claims for positive hints of a DM signal in some direct detection experiments.

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“…At LEP [35][36][37][38][39], searches set lower limits of 103.5 GeV,99.9 GeV,94.6 GeV,and 86.6 GeV at 95% confidence level (CL) on the mass of promptly decaying charginos, selectrons, smuons, and staus, respectively. For the interval 0.1 ≲ Δmðχ AE 1 ;χ 0 1 Þ ≲ 3 GeV, the chargino mass limit set by LEP degrades to 91.9 GeV.…”

Section: Introductionmentioning

confidence: 99%

Search for the electroweak production of supersymmetric particles ins=8 TeVppcollisions with the ATLAS detector

Aad¹,

Abbott²,

Abdallah³

et al. 2016

Phys. Rev. D

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The ATLAS experiment has performed extensive searches for the electroweak production of charginos, neutralinos, and staus. This article summarizes and extends the search for electroweak supersymmetry with new analyses targeting scenarios not covered by previously published searches. New searches use vectorboson fusion production, initial-state radiation jets, and low-momentum lepton final states, as well as multivariate analysis techniques to improve the sensitivity to scenarios with small mass splittings and lowproduction cross sections. Results are based on 20 fb −1 of proton-proton collision data at ffiffi ffi s p ¼ 8 TeV recorded with the ATLAS experiment at the Large Hadron Collider. No significant excess beyond Standard Model expectations is observed. The new and existing searches are combined and interpreted in terms of 95% confidence-level exclusion limits in simplified models, where a single production process and decay mode is assumed, as well as within phenomenological supersymmetric models.

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Searches for supersymmetric particles in e + e- collisions up to 208 GeV and interpretation of the results within the MSSM

Cited by 215 publications

References 42 publications

Present status and future tests of the higgsino-singlino sector in the NMSSM

Present status and future tests of the higgsino-singlino sector in the NMSSM

Naturalness of light neutralino dark matter in pMSSM after LHC, XENON100 and Planck data

Search for the electroweak production of supersymmetric particles ins=8 TeVppcollisions with the ATLAS detector

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