Thursday 17 October 2024

Recent Paper has new limit on neutrino - majoron interactions from the SN1987 Supernova

The supernova of 1987, SN1987a which occurred in the large magilangic cloud, is the only supernova where neutrinos (some 24), interactions on earth have been recorded. These recorded interactions have now allow the researcher, P.I. Ballesteros and Christa Volpe, https://arxiv.org/abs/2410.11517, to limit potential interactions between neutrinos and majorons (a Majoron is a spin zero particle like a light Huggs, giving mass just to the neutrino). The limits are force contant of around 10^-7 compare. This might also limit an axial force, although that would be a spin-1 psuedovector particle, previously we look at a force contant in the range a few*10^-5 so this paper might simiilar reduce the limits on strength of how force by a factor of a hundred. The previous work on SN1987, from the year 2000, and published in Phy Rev D, https://journals.aps.org/prd/abstract/10.1103/PhysRevD.62.023004 limited the majoron interactiom in the range, 3×10−7≲𝑔≲2×10−5 or 𝑔≳3×10−4 so left open the range 2*10^-5 to 3*10-4 allow or orignal guess of force constant (making the weak assumption that majoron and axi-photon limits would be similar.)

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