Searches for prompt light gravitino signatures in e+e− collisions at =189 GeV

Abbiendi, G.; Ackerstaff, K.; Ainsley, C.; Åkesson, P. F.; Alexander, G.; Allison, J.; Anderson, K. J.; Arcelli, S.; Asai, S.; Ashby, S. F.; Axen, D.; Azuelos, G.; Bailey, I.; Ball, A. H.; Barberio, E.; Barlow, R. J.; Batley, J. R.; Baumann, S.; Behnke, T.; Bell, K. W.; Bella, G.; Bellerive, A.; Bentvelsen, S.; Bethke, S.; Biebel, O.; Bloodworth, I. J.; Bock, P.; Böhme, J.; Boeriu, O.; Bonacorsi, D.; Boutemeur, M.; Braibant, S.; Bright-Thomas, P.; Brigliadori, L.; Brown, R. M.; Burckhart, H.; Cammin, J.; Capiluppi, P.; Carnegie, R. K.; Carter, A. A.; Carter, J. R.; Chang, C. Y.; Charlton, D. G.; Ciocca, C.; Clarke, P. E.L.; Clay, E.; Cohen, I.; Cooke, O. C.; Couchman, J.; Couyoumtzelis, C.; Coxe, R. L.; Cuffiani, M.; Dado, S.; Dallavalle, G. M.; Dallison, S.; Roeck, A. De; Dervan, P.; Desch, K.; Dienes, B.; Dixit, M. S.; Donkers, M.; Dubbert, J.; Duchovni, E.; Duckeck, G.; Duerdoth, I. P.; Estabrooks, P. G.; Etzion, E.; Fabbri, F.; Fanti, M.; Felď, L.; Ferrari, P.; Fiedler, F.; Fleck, I.; Ford, M.; Frey, A.; Fürtjes, A.; Futyan, D. I.; Gagnon, P.; Gary, J. W.; Gaycken, G.; Geich-Gimbel, C.; Giacomelli, G.; Giacomelli, P.; Glenzinskí, D.; Goldberg, J.; Grandi, C.; Graham, K.; Gross, E.; Grunhaus, J.; Gruwé, M.; Günther, P. O.; Hajdú, C.; Hanson, G.; Hansroul, M.; Hapke, M.; Harder, K.; Harel, A.; Hargrove, C. K.; Harin-Dirac, M.; Hauke, A.; Hauschild, M.; Hawkes, C. M.; Hawkings, R. J.; Hemingway, R. J.; Hensel, C.; Herten, G.; Heuer, R. D.; Hildreth, M.; Hill, J. C.; Hobson, P. R.; Höcker, A.; Hoffman, K. D.; Homer, R. J.; Honma, A. K.; Horváth, D.; Hossain, K. R.; Howard, Robert; Hüntemeyer, P.; Igo‐Kemenes, P.; Imrie, D. C.; Ishii, K.; Jacob, F. R.; Jawahery, A.; Jérémie, H.; Jones, C. R.; Jovanović, P.; Junk, T. R.; Kanaya, N.; Kanzaki, J.; Karapetian, G.; Karlen, D.; Kartvelishvili, V.; Kawagoe, K.; Kawamoto, T.; Keeler, R.; Kellogg, R. G.; Kennedy, B. W.; Kim, D. H.; Klein, K.; Klier, A.; Kobayashi, Takumi; Kobel, M.; Kokott, T. P.; Komamiya, S.; Kowalewski, R.; Kress, T.; Krieger, P.; Krogh, J. von; Kühl, T.; Küpper, M.; Kyberd, P.; Lafferty, G. D.; Landsman, H.; Lanske, D.; Lawson, I.; Layter, J. G.; Leins, A.; Lellouch, D.; Letts, J.; Levinson, L.; Liebisch, R.; Lillich, J.; List, B.; Littlewood, C.; Lloyd, A. W.; Lloyd, S. L.; Loebinger, F. K.; Long, G. D.; Losty, M. J.; Lu, J.; Ludwig, J.; Macchiolo, A.; Macpherson, A.; Mader, W. F.; Mannelli, M.; Marcellini, S.; Marchant, T. E.; Martín, A.; Martin, J. P.; Martı́nez, G.; Mäshimo, T.; Mättig, P.; McDonald, W. J.; McKenna, J. A.; McMahon, T. J.; McPherson, R. A.; Meijers, F.; Mendez-Lorenzo, P.; Merritt, F. S.; Mes, H.; Michelini, A.; Mihara, S.; Mikenberg, G.; Miller, D. J.; Mohr, W.; Montanari, A.; Mori, T.; Nagai, K.; Nakamura, I.; Neal, H. A.; Nisius, R.; O’Neale, S. W.; Oakham, F. G.; Odorici, F.; Ogren, H. O.; Oh, A.; Okpara, A.; Oreglia, M. J.; Orito, S.; Pásżtor, G.; Pater, J. R.; Patrick, G. N.; Patt, J.; Pfeifenschneider, P.; Pilcher, J. E.; Pinfold, J. L.; Plane, D. E.; Poli, B.; Polok, J.; Pooth, O.; Przybycień, M.; Quadt, A.; Rembser, C.; Rick, H.; Robins, S. A.; Rodning, N.; Roney, J. M.; Rosati, S.; Roscoe, K.; Rossi, A.; Rozen, Y.; Runge, K.; Runólfsson, Ö.; Rust, D. R.; Sachs, K.; Saeki, T.; Sahr, O.; Sang, W. M.; Sarkisyan, E. K.G.; Sbarra, C.; Schaile, A. D.; Schaile, O.; Scharff-Hansen, P.; Schmitt, S.; Schröder, M.; Schumacher, M.; Schwick, C.; Scott, W. G.; Seuster, R.; Shears, T.; Shen, B. C.; Shepherd‐Themistocleous, C. H.; Sherwood, P.; Siroli, G. P.; Skuja, A.; Smith, A. M.; Snow, G. A.; Sobie, R. J.; Söldner-Rembold, S.; Spagnolo, S.; Sproston, M.; Stahl, A.; Stephens, K.; Stoll, K.; Strom, D.; Ströhmer, R.; Surrow, B.; Talbot, S. D.; Tarem, S.; Taylor, R. J.; Teuscher, R. J.; Thiergen, M.; Thomas, J. P.; Thomson, M. A.; Torrence, E.; Towers, S.; Trefzger, T.; Trigger, I. M.; Trócsányi, Z. L.; Tsur, E.; Turner-Watson, M. F.; Ueda, I.; Vannerem, P.; Verzocchi, M.; Voss, H.; Vossebeld, J. H.; Waller, D.; Ward, C. P.; Ward, D. R.; Watkins, P. M.; Watson, A. T.; Watson, N. K.; Wells, P. S.; Wengler, T.; Wermes, N.; Wetterling, D.; White, J. S.; Wilson, G. W.; Wilson, J. A.; Wyatt, T. R.; Yamashita, Shinji; Zacek, V.; Zer-Zion, D.

doi:10.1016/s0370-2693(01)00101-0

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…In this report a selection of these results 3,4,6,7,8 , based mainly on the data recorded from 1998-1999 with center-of-mass energies between 189 GeV and 202 GeV, is presented. Some preliminary results from the data recorded in the year 2000 with center-of-mass energies of up to 209 GeV are also shown 5,9,10 .…”

Section: Introductionmentioning

confidence: 99%

Searches for Gauge Mediated Supersymmetry Breaking Signatures at Lep2

Klein¹

2002

Fundamental Interactions

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Section: Introductionmentioning

confidence: 99%

Searches for Gauge Mediated Supersymmetry Breaking Signatures at Lep2

Klein¹

2002

Fundamental Interactions

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Search for light gravitinos in events with photons and missing transverse momentum at HERA

Aktas

Andreev²,

Anthonis³

et al. 2005

Physics Letters B

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A search for gravitinos produced in $e\pmp$ collisions is performed using the H1 detector at HERA. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb$^{-1}$ for $e^+p$ collisions and 13.5 pb$^{-1} for e$^-p$ collisions. If $R$-parity is not conserved, the $t$-channel exchange of a selectron can produce a neutralino, which, in models where the gravitino is the lightest supersymmetric particle, subsequently decays into a photon and a light gravitino. The resulting event signature, which involves an isolated photon, a jet and missing transverse energy, is analysed for the first time at HERA. No deviation from the Standard Model is found. Exclusion limits on the cross section and on $R$-parity-violating Yukawa couplings are derived in a Gauge Mediated Supersymmetry Breaking scenario. The results are independent of the squark sector. Neutralinos and supersymmetric partners of the left-handed electron with masses up to 112 GeV and 164 GeV, respectively, can be ruled out at the 95\% confidence level for $R$-parity-violating couplings $\lambda^{\prime}$ equal to 1, in some parts of the parameter space of the considered model

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Supersymmetric extra dimensions: Gravitino effects in selectron pair production

Hewett

Sadri

2004

Phys. Rev. D

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We examine the phenomenological consequences of a supersymmetric bulk in the scenario of large extra dimensions. We assume supersymmetry is realized in the bulk and study the interactions of the resulting bulk gravitino Kaluza-Klein (KK) tower of states, with supersymmetry breaking on the brane inducing a light mass for the zeromode gravitino. We derive the 4-d effective theory, including the couplings of the bulk gravitino KK states to fermions and their scalar superpartners. The virtual exchange of the gravitino KK states in selectron pair production in polarized e + e − collisions is then examined. We find that the leading order operator for this exchange is dimension six, in contrast to that of bulk graviton KK exchange which induces a dimension eight operator at lowest order. The resulting kinematic distributions for selectron production are dramatically altered from those in D = 4 supersymmetric scenarios, and can lead to a enormous sensitivity to the fundamental higher dimensional Planck scale, of order 20 − 25 × √ s.

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Searches for prompt light gravitino signatures in e+e− collisions at =189 GeV

Cited by 3 publications

References 35 publications

Searches for Gauge Mediated Supersymmetry Breaking Signatures at Lep2

Searches for Gauge Mediated Supersymmetry Breaking Signatures at Lep2

Search for light gravitinos in events with photons and missing transverse momentum at HERA

Supersymmetric extra dimensions: Gravitino effects in selectron pair production

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