Results 101 to 110 of about 12,794 (197)

Natural SUSY at LHC with Right-Sneutrino LSP

, 2018
We study an extension of the minimal supersymmetric standard model (MSSM) with additional right-handed singlet neutrino superfields. While such an extension incorporates a mechanism for the neutrino mass, it also opens up the possibility of having the ...
Chatterjee, Arindam, Dutta, Juhi, Rai, Santosh Kumar   +2 more
core   +1 more source

Constraints on Phases of Supersymmetric Flavour Conserving Couplings [PDF]

, 1999
In the unconstrained MSSM, we reanalyze the constraints on the phases of supersymmetric flavour conserving couplings that follow from the electron and neutron electric dipole moments (EDM).
Abdullah, Arnowitt, Arnowitt, Braaten, Brhlik, Buchmüller, C.A. Savoy, Chang, Commins, Dai, Demir, Dugan, Ellis, Ellis, Falk, Falk, Gabbiani, Garisto, Gerard, Harris, Ibrahim, Ibrahim, Ibrahim, J. Rosiek, Kizuruki, Kizuruki, Manohar, Nath, Polchinski, Rosiek, S. Pokorski, Weinberg   +31 more
core   +6 more sources

Supersymmetry with a chargino NLSP and gravitino LSP

Journal of High Energy Physics, 2009
We demonstrate that the lightest chargino can be lighter than the lightest neutralino in supersymmetric models with Dirac gaugino masses as well as within a curious parameter region of the MSSM. Given also a light gravitino, such as from low scale supersymmetry breaking, this mass hierarchy leads to an unusual signal where every superpartner cascades ...
Kribs, Graham D., Martin, Adam, Roy, Tuhin S.   +2 more
openaire   +2 more sources

Chargino production and decay in photon-photon collisions [PDF]

The European Physical Journal C, 2003
22 pages, 15 figures, version to be published in Eur. Phys.
Mayer, T., Bloechinger, C., Franke, F., Fraas, H.   +3 more
openaire   +2 more sources

Chargino Contributions in $B \to \phi K_S$ Asymmetry

, 2003
CP asymmetry in $B \to \phi K_S$ decay is studied in a special context of supersymmetry theories, in which the charginos play an important role. We find that in addition to the gluino, chargino can also make large contributions to CP asymmetry in $B \to \
A. Datta, A. Kundu, B. Aubert, C. Bobeth, C.W. Chiang, D. Chakraverty, E. Gabrielli, E. Gabrielli, E. Gabrielli, E. Lunghi, F. Gabbiani, F. Gabbiani, F. Krüger, G. Buchalla, G.L. Kane, H.E. Haber, J. Lee, K. Abe, K. Agashe, M. Kobayashi, N. Cabibbo, R. Arnowitt, R. Barbieri, R. Fleischer, S. Bertolini, S. Bertolini, S. Khalil, S. Mishima, S. Mishima, T. Moroi, Y. Grossman, Y. Nir, Yili Wang   +32 more
core   +1 more source

Phenomenological implications of moduli-dominant SUSY breaking [PDF]

, 1997
We study moduli-dominated SUSY breaking within the framework of string models. This type of SUSY breaking in general leads to non-universal soft masses, i.e. soft scalar masses and gaugino masses. Further gauginos are lighter than sfermions.
Altendorfer, Alvarez-Gaumé, Ammar, Amowitt, Antoniadis, Barbieri, Barbieri, Bertolini, Bertolini, Brax, Brignole, Brignole, Carena, Carena, Casas, Casas, Casas, Chankowski, Chen, Chetyrkin, Chun, Cvetič, de Carlos, Derendinger, Derendinger, Diaz, Dixon, Dixon, Dixon, Dixon, Dixon, Drees, Drees, Ellis, Faraggi, Frere, Gamberini, Giudice, Green, Griest, Grigjanis, Grinstein, Haber, Hagelin, Hamidi, Ibáñez, Ibáñez, Jungman, Kaplunovsky, Katsuki, Kawabe, Kawamura, Kawamura, Kawamura, Kawamura, Khalil, Khalil, Khalil, Kim, Kobayashi, Kobayashi, Kobayashi, Kobayashi, Kobayashi, Kobayashi, Kolda, Kounnas, Kranimis, Lleyda, López, Matalliotakis, Misiak, Misiak, Nilles, Olechowski, Polonsky, Shaaban Khalil, Tatsuo Kobayashi, Yoshiharu Kawamura   +78 more
core   +2 more sources

Signatures for charginos at the Z0

Physics Letters B, 1989
Abstract We calculate the width for Z 0 → χ + χ − and all possible decay rates of the charginos. We systematically study their dependence on the supersymmetry parameters and work out the constraints experiments will provide.
A. Bartl, W. Majerotto, N. Oshimo, S. Stippel   +3 more
openaire   +1 more source

Search for direct top squark pair production in final states with one isolated lepton using 21 fb−1 of data collected with the ATLAS detector

EPJ Web of Conferences, 2014
Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners of the third generation quarks with masses not too far from those of their Standard Model counterparts. Top or bottom scalar quarks (or squarks) with masses less than a few
Meloni Federico, Pani Priscilla
doaj   +1 more source

Chargino contribution to the rare decay b→ss

Physics Letters B, 2004
AbstractThe rare decay b→ssd̄ is studied in the supersymmetric Standard Model by considering the contribution from the chargino box diagrams. We find that this contribution amounts to 10−9 in the branching ratio.
Wu, Xiao-Hong, Zhang, Da-Xin
openaire   +1 more source

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in 21 fb−1 of pp collisions at √(s) = 8 TeV with the ATLAS detector

EPJ Web of Conferences, 2013
A search for direct chargino and neutralino production processes is presented in a final state with exactly 3 leptons (electrons or muons). No excess over the Standard Model has been observed. The analysis presented is based on 20.7 fb−1 of proton-proton
Schneider Basil
doaj   +1 more source