Bounds on the Parameter of Noncommutativity from Supernova SN1987A
| dc.creator | Haghighat, Mansour | |
| dc.date | 2009-01-08 | |
| dc.date.accessioned | 2026-07-07T12:46:36Z | |
| dc.date.available | 2026-07-07T12:46:36Z | |
| dc.description | We consider supernova SN1987A to find bounds on parameter of noncommutativity, $þ_{μν}$. Right handed neutrino in the noncommutative standard model, NCSM, can directly couple to the photon and the Z-gauge boson. Therefore the observed flux of neutrinos from SN1987A can constrain the strength of the new couplings in the NCSM. We obtain two bounds on the NC-parameter, $Λ_{NC}=1/{\sqrt |þ|} $, with respect to escaping or trapping of the right handed neutrinos inside the supernova which are $Λ_{NC}\gtrsim 3.7 TeV$ or $Λ_{NC}\lesssim 1 TeV$, respectively. The excluded region $1 TeV\lesssimΛ_{NC}\lesssim 3.7 TeV$ for the NC-parameter is obtained for the first time. In fact $Λ_{NC}\lesssim 1 TeV$ is consistent with the existing bounds on $Λ_{NC}$ and raises our hopes to find the NC-effects in the LHC or even in the LEP. Meanwhile $Λ_{NC}\gtrsim 3.7 TeV$ is more stringent than the other bounds obtained from LEP and LHC considerations. Furthermore, since NC-calculations are perturbative and are correct only up to the energy scale of the NC-system $\lesssimΛ_{NC} $, therefore these bounds which are obtained from the energy scale considerably less than the energy scale of LEP and LHC are more reliable. | |
| dc.description | 7 pages, Accepted for publication in Physical Review D | |
| dc.identifier | https://arxiv.org/abs/0901.1069 | |
| dc.identifier | http://arxiv.org/abs/0901.1069 | |
| dc.identifier | Phys.Rev.D79:025011,2009 | |
| dc.identifier | doi:10.1103/PhysRevD.79.025011 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/221438 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Bounds on the Parameter of Noncommutativity from Supernova SN1987A | |
| dc.type | text |