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Neutron can be a Majorana particle as was originally conjectured by E.
Majorana.
It might reveal its nature in the transformation of neutron to antineutron that would be a signal of baryon number violation with Delta B=2.
More than 1000 times an improvement can be made in the sensitivity of neutron-antineutron search at the new European Spallation Source (ESS) to be constructed by the end of this decade near Lund in Sweden.
A new N-Nbar search Collaboration is presently being formed in Europe to perform this spectacular search at ESS with slow neutron beam of high intensity.
If neutron-antineutron transformation will be found,
it will offer a mechanism for the generation of baryon asymmetry of the universe at the post-sphaleron scale,
thus making an alternative to leptogenesis.
Such a mechanism can also reveal itself with an observation of new heavy scalar states at LHC.
New Collaboration plans to build at ESS a detector for neutron-antineutron transformation search,
where new groups are welcome to participate and contribute.
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