Abstract.
The DELPHI experiment at the LEP e + e - collider collected almost 700 pb-1 at centre-of-mass energies above the Z 0 mass pole and up to 208 GeV. Those data were used to search for SUSY in the Anomaly Mediated SUSY Breaking (AMSB) scenario with a flavour independent common sfermion mass parameter. The searches covered several possible signatures experimentally accessible at LEP, with either the neutralino, the sneutrino or the stau being the Lightest Supersymmetric Particle (LSP). They included: the search for nearly mass-degenerate chargino and neutralino, which is a typical feature of AMSB; the search for Standard-Model-like or invisibly decaying Higgs boson; the search for stable staus; the search for cascade decays of SUSY particles resulting in the LSP and a low multiplicity final state containing neutrinos. No evidence of a signal was found, and thus constraints were set in the space of the parameters of the model.
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References
A.H. Chamseddine, R. Arnowitt, P. Nath, Phys. Rev. Lett. 49, 970 (1982); R. Barbieri, S. Ferrara, C.A. Savoy, Phys. Lett. B 119, 343 (1982)
M. Dine, A.E. Nelson, Phys. Rev. B 48, 1277 (1993); M. Dine, A.E. Nelson, Y. Shirman, Phys. Rev. B 51, 1362 (1995); M. Dine, A.E. Nelson, Y. Nir, Y. Shirman, Phys. Rev. B 53, 2658 (1996)
L. Randall, R. Sundrum, Nucl. Phys. B 557, 79 (1999)
G.F. Giudice, M. Luty, H. Murayama, R. Rattazzi, JHEP 9812, 027 (1998); T. Gherghetta, G.F. Giudice, J.D. Wells, Nucl. Phys. B 559, 27 (1999); J.L. Feng, T. Moroi, Phys. Rev. B 61, 095004 (2000)
A. Pomarol, R. Rattazzi, JHEP 9905, 013 (1999)
S. Su, Nucl. Phys. B 573, 87 (2000)
DELPHI Coll., P. Aarnio et al. , Nucl. Instr. Methods A 303, 233 (1991); DELPHI Coll., P. Abreu et al. , Nucl. Instr. Methods A 378, 57 (1996)
S.Katsanevas and P.Morawitz, Comput. Phys. Commun. 112, 227 (1998)
H. Baer, F.E. Paige, S.D. Protopopescu, X. Tata, Simulating Supersymmetry with ISAJET 7.0/ISASUSY 1.0, in: Argonne Accel. Phys. 0703-720 (1993), hep-ph/9305342
H. Baer, private communication
Particle Data Group, K. Hagiwara et al. , Phys. Rev. B 66, 010001 (2002)
K. Moenig, CERN-OPEN-97-040
DELPHI Coll., J. Abdallah, et al. , CERN-EP 2003-007, submitted to Eur. Phys. J. C
V.F. Obraztsov, Nucl. Instr. Methods A 316, 388 (1992); 399, 500 (1997) (erratum)
A. Perrotta, Int. J. Mod. Phys. C 13, 989 (2002)
T.W. Anderson, An Introduction to multivariate analysis (Wiley, New York, 1958)
DELPHI Coll., J. Abdallah, et al. , Eur. Phys. J. C 27, 153 (2003)
DELPHI Coll., J. Abdallah, et al. , Eur. Phys. J. C 32, 145 (2004)
DELPHI Coll., J. Abdallah, et al. , CERN-EP 2003-046, Eur. Phys. J. C 32, 475 (2004)
G. Altarelli, F. Caravaglios, G.F. Giudice, P. Gambino, G. Ridolfi, JHEP 0106, 018 (2001)
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Received: 3 September 2003, Revised: 3 February 2004, Published online: 9 March 2004
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The DELPHI Collaboration. Search for SUSY in the AMSB scenario with the DELPHI detector. Eur. Phys. J. C 34, 145–156 (2004). https://doi.org/10.1140/epjc/s2004-01715-7
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DOI: https://doi.org/10.1140/epjc/s2004-01715-7