Supergravity at colliders
Copyright policy )Supergravity at colliders
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.
13 pages, 11 figures; v2: 3 references added, to appear in Physics Letters B
High Energy Physics - Theory, angular distribution: asymmetry, lepton, sparticle: lifetime, 5106 Nuclear and Plasma Physics (for-2020), energy spectrum, Particle and Plasma Physics (for), FOS: Physical sciences, 0201 Astronomical and Space Sciences (for), 51 Physical sciences (for-2020), Atomic, sparticle: radiative decay, gravitino: spin, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, final state: (lepton photon), High Energy Physics - Phenomenology (hep-ph), 0105 Mathematical Physics (for), Nuclear, info:eu-repo/classification/ddc/530, numerical calculations, gravitino: mass, Mathematical Physics, 5107 Particle and High Energy Physics (for-2020), polarization, 51 Physical Sciences (for-2020), photon, article, Molecular, Nuclear & Particles Physics (science-metrix), Nuclear & Particles Physics, 49 Mathematical sciences (for-2020), gravity, radiation, High Energy Physics - Phenomenology, High Energy Physics - Theory (hep-th), kinematics, 0202 Atomic, 4902 Mathematical Physics (for-2020), 49 Mathematical Sciences (for-2020), supergravity, Astronomical and Space Sciences
High Energy Physics - Theory, angular distribution: asymmetry, lepton, sparticle: lifetime, 5106 Nuclear and Plasma Physics (for-2020), energy spectrum, Particle and Plasma Physics (for), FOS: Physical sciences, 0201 Astronomical and Space Sciences (for), 51 Physical sciences (for-2020), Atomic, sparticle: radiative decay, gravitino: spin, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, final state: (lepton photon), High Energy Physics - Phenomenology (hep-ph), 0105 Mathematical Physics (for), Nuclear, info:eu-repo/classification/ddc/530, numerical calculations, gravitino: mass, Mathematical Physics, 5107 Particle and High Energy Physics (for-2020), polarization, 51 Physical Sciences (for-2020), photon, article, Molecular, Nuclear & Particles Physics (science-metrix), Nuclear & Particles Physics, 49 Mathematical sciences (for-2020), gravity, radiation, High Energy Physics - Phenomenology, High Energy Physics - Theory (hep-th), kinematics, 0202 Atomic, 4902 Mathematical Physics (for-2020), 49 Mathematical Sciences (for-2020), supergravity, Astronomical and Space Sciences
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