Month: September 2022

MIRROR PARTICLE. “A specific feature of this scenario is that any neutral particle (elementary as e.g. neutrinos or composite as e.g. the neutron) can have maximal mixing with its M partner, and such twin species can effectively oscillate between each other.” https://lnkd.in/dWfwWeTG View in LinkedIn

MEASUREMENT. “Namely, the active–sterile ν − ν′ oscillations between the O and M neutrinos, violating the lepton numbers L and L′ of both sectors by one unit, can be experimentally observed as the deficit of neutrinos.” (O= ordinary, M= mirror) https://lnkd.in/dWfwWeTG View in LinkedIn

NEUTRINO EFFECT. “In fact, for free neutrons n − n′ oscillation is suppressed by the medium effects as the presence of matter and magnetic fields.” https://lnkd.in/dWfwWeTG View in LinkedIn

NO NEUTRINO EFFECT. “But in deep cosmos it could proceed without suppression, with interesting implications e.g. for the cosmic rays at super-GZK energies, as far as the neutrons produced in pγ → nπ+ reactions on relic photons can promptly oscillate into n′ and then decay in M sector.” (O= ordinary, M= mirror). https://lnkd.in/dWfwWeTG View in LinkedIn

THE LIMIT. “It is remarkable that the nuclear stability yields no limit on ε since n → n′ conversion in nuclei is forbidden by the energy conservation.” https://lnkd.in/dWfwWeTG View in LinkedIn

EXCEPTION. “However, in the neutron stars (NS) n → n′ conversion is energetically favored, and it can gradually transform the NS into mixed stars partially consisting of M matter.” (O= ordinary, M= mirror). https://lnkd.in/dWfwWeTG View in LinkedIn

“MACH’S PRINCIPAL states that the mass of a particle is determined by its relation to all the other particles in the universe.” https://lnkd.in/dWyDyz9m View in LinkedIn

Dawn view of Girona cathedral across a sculpted meadow. View in LinkedIn

MATTER-ANTIMATTER INTERCONVERSION. “Since in super-dense nuclear medium n − n′ oscillation is strongly suppressed, for ε ∼ 10−15 eV the effective conversion time appears to be much larger than the universe age.” https://lnkd.in/dWfwWeTG View in LinkedIn

EXTRAORDINARY SENTENCE. “By the essence of the mirror matter, the neutron stars should exist also in dark M sector. In fact, M baryons represent DM of asymmetric type, with its abundance determined by the baryon asymmetry (BA) in M world. However, a priori the sign of mirror BA is unknown.” (DM = dark matter; M = mirror). https://lnkd.in/dWfwWeTG View in LinkedIn