2005
DOI: 10.1088/0954-3899/31/5/014
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μ-term as the origin of baryon and lepton number asymmetry

Abstract: We study a possibility of combining an origin of the µ-term and the baryon and lepton number asymmetry. If we assume that the µ-term is generated through a flat direction of a singlet scalar field, the coherent oscillation of this condensate around its potential minimum can store the global U(1) charge asymmetry. The decay of this condensate can distribute this asymmetry into the lepton and baryon number asymmetry as far as its decay occurs at an appropriate temperature. We examine the compatibility between th… Show more

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Cited by 4 publications
(18 citation statements)
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“…(11) as the dominant potential for a h . 9 Using the scalar potential (11), the mass matrix for two axions can be written in the basis (θX, a MI ) as…”
Section: Dark Energy Candidatementioning
confidence: 99%
See 2 more Smart Citations
“…(11) as the dominant potential for a h . 9 Using the scalar potential (11), the mass matrix for two axions can be written in the basis (θX, a MI ) as…”
Section: Dark Energy Candidatementioning
confidence: 99%
“…As mentioned in section 3, the present model has two sources for the µ term. Here we note that the late time evolution of S 1 may give important contribution to the µ term [9]. We assume H I ∼ 10 13 GeV during the inflation on the basis of the CMB data and T R < ∼ 10 9 GeV.…”
Section: As [27]mentioning
confidence: 99%
See 1 more Smart Citation
“…If we add S 1Ĥ 1Ĥ 2 to the MSSM superpotential and remove the ordinary l-term, we find that the global symmetry is extended. There appear two new Abelian symmetries other than the B and L symmetry [7][8][9]. They can be taken as the Peccei-Quinn symmetry and the R symmetry.…”
mentioning
confidence: 99%
“…We assume that the decay widths through these couplings satisfy C S 1 ' C S 2 to make the discussion clear. 9 Since the oscillation of the condensate behaves as a matter for the expansion of the universe, it can dominate the energy density of the universe before its decay which occurs at H $ C S 1;2 . For the reasonable value of k 1,2 , this is the case since C S 1;2 < C I is satisfied.…”
mentioning
confidence: 99%