Light gauginos: Masses and instabilities

Details Light gauginos: Masses and instabilities Light gauginos: Masses and instabilities

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nuphb.243..429b&link_type=abstract

Nuclear Physics B, Volume 243, Issue 3, p. 429-448.

Physics

Nuclear Physics

17

Scientific paper

Within the framework of supergravity models without grand unified steps, we analyse in detail the consequences of the hypothesis that gauginos have no bare masses due to supergravity interactions. To this purpose we have made a one-loop calculation of wino, zino, and photino masses and a renormalization group improved two-loop calculation of the gluino masses.
We find that: (i) the non-observation of charged winos is compatible either with a gravitino mass m <~ 300 GeV or m >~3 TeV; (ii) with a top quark mark of about 40 GeV, gluino and photino have very similar masses ranging from O(1 GeV) to O(20 GeV). In most cases consistency with cosmology requires that the gauge singlet needed to break the SU(2) × U(1) symmetry, be the lightest stable supersymmetric particle, with a mass as low as 1 keV or less. In such cases photino (or gluino) lifetimes into one photon (gluon) and one light singlet fermion (zerino), are typically between 10-3 and 1 sec.
We discuss the problem of the experimental detection of gauginos, which, according to the various options, require rather different approaches.

Affiliated with

Also associated with

No associations

Rating

Light gauginos: Masses and instabilities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Light gauginos: Masses and instabilities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light gauginos: Masses and instabilities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1396979