TY  - JOUR
AU  - Buchmuller, Wilfried
AU  - Hamaguchi, Koichi
AU  - Ratz, Michael
AU  - Yanagida, Tsutomu
TI  - Supergravity at colliders
JO  - Physics letters / B
VL  - 588
IS  - 1-2
SN  - 0370-2693
CY  - Amsterdam
PB  - North-Holland Publ.
M1  - PUBDB-2017-04989
M1  - hep-ph/0402179
M1  - DESY-04-010
M1  - UT-04-07
SP  - 90 - 98
PY  - 2004
N1  - Theoretische Physik
AB  - We consider supersymmetric theories where the gravitino is the lightest superparticle (LSP). Assuming that the long-lived next-to-lightest superparticle (NSP) is a charged slepton, we investigate two complementary ways to prove the existence of supergravity in nature. The first is based on the NSP lifetime which in supergravity depends only on the Planck scale and the NSP and gravitino masses. With the gravitino mass inferred from kinematics, the measurement of the NSP lifetime will test an unequivocal prediction of supergravity. The second way makes use of the 3-body NSP decay. The angular and energy distributions and the polarizations of the final state photon and lepton carry the information on the spin of the gravitino and on its couplings to matter and radiation.
KW  - supergravity (INSPIRE)
KW  - sparticle: radiative decay (INSPIRE)
KW  - sparticle: lifetime (INSPIRE)
KW  - final state: (lepton photon) (INSPIRE)
KW  - gravitino: mass (INSPIRE)
KW  - kinematics (INSPIRE)
KW  - gravitino: spin (INSPIRE)
KW  - angular distribution: asymmetry (INSPIRE)
KW  - energy spectrum (INSPIRE)
KW  - numerical calculations (INSPIRE)
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000221485200013
DO  - DOI:10.1016/j.physletb.2004.03.016
UR  - https://bib-pubdb1.desy.de/record/324811
ER  -