Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-10-11
Phys.Lett. B348 (1995) 115-120
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages in Latex,PRL-TH-94/18
Scientific paper
10.1016/0370-2693(95)00116-3
We calculate exotic cooling rates of stars due to photo-production of light particles (mostly scalars and pseudoscalars) which originate from the hidden sector of no scale supergravity theories. Using this we can restrict the gravitino mass $m_{3/2}$. The range of eliminated values of $m_{3/2}$ stretches over six orders of magnitude and is given by $\displaystyle{2 \times 10^8 < {m_{\tilde g} \over m_{3/2}} < 6 \times 10^{13}}$, $m_{\tilde g}$ being the gluino mass. Combining our result with the earlier analysis from colliders ($\displaystyle{ {m_{\tilde g} \over m_{3/2}} < 2.7 \times 10^{14}}$) we conclude that $\displaystyle{{m_{\tilde g} \over m_{3/2}} < {\cal O}(10^8)}$ except for a narrow window around $10^{14}$. Together with the current experimental limit on $m_{\tilde{g}}$ and cosmological constraints on $m_{3/2}$, albeit model dependent, our analysis shows that a light gravitino is on the verge of being ruled out.
Nowakowski Marek
Rindani Saurabh D.
No associations
LandOfFree
Astrophysical Limits on Gravitino Mass 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 Astrophysical Limits on Gravitino Mass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Astrophysical Limits on Gravitino Mass will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-199895