<i>CP</i>-violating effects in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">e</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>→<i>ZH</

P., J.; McKellar, Bruce H. J.

doi:10.1103/physrevd.52.22

Cited by 11 publications
(11 citation statements)

References 20 publications

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“…8. The two separate solutions merge in a single connected solution at tan 2 φ ≃ 0.5, as also shown in [7,9]. For increasing value of tan 2 φ, the allowed region becomes broader and less structured, and then rapidly shrinks and disappears at tan 2 φ > ∼ 1.5.…”

Section: A Analysis In the Mass-mixing Planesupporting
confidence: 52%

“…The present study is more complete and detailed than previous three-flavor phenomeno-logical analyses of the solar neutrino problem performed by other authors [5][6][7][8][9] and by ourselves [10][11][12]. The work presented in this paper is part of a wider research program, in which we intend to analyze the world neutrino oscillation data under the sole hypothesis represented by the spectrum in Fig.…”

Section: Introductionmentioning
confidence: 93%

See 1 more Smart Citation
Matter-enhanced three-flavor oscillations and the solar neutrino problem
Fogli
¹
,
Lisi
²
,
Montanino
³

1996
Phys. Rev. D
119
10
154
1
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We present a systematic analysis of the three-flavor Mikheyev-SmirnovWolfenstein (MSW) oscillation solutions to the solar neutrino problem, in the hypothesis that the two independent neutrino square mass differences, δm 2 and m 2 , are well separated: δm 2 ≪ m 2 . At zeroth order in δm 2 /m 2 , the relevant variables for solar neutrinos are δm 2 and two mixing angles, ω and φ. We introduce new graphical representations of the parameter space (δm 2 , ω, φ), that prove useful both to analyze the properties of the electronneutrino survival probability and to present the results of the analysis of solar neutrino data. We make a detailed comparison between the theoretical predictions of the Bahcall-Pinsonneault standard solar model and the current experimental results on solar neutrino rates, and discuss thoroughly the 1 MSW solutions found by spanning the whole three-flavor space (δm 2 , ω, φ).The allowed regions can be radically different from the usual "small mixing"and "large mixing" solutions, characteristic of the usual two-generation MSW approach. We also discuss the link between these results and the independent information on neutrino masses and mixings coming from accelerator and reactor oscillation searches. PACS number(s): 26.65.+t,14.60.Pq,13.15.+g.
show abstract

Section: A Analysis In the Mass-mixing Planesupporting
confidence: 52%

Section: Introductionmentioning
confidence: 93%

Matter-enhanced three-flavor oscillations and the solar neutrino problem
Fogli
¹
,
Lisi
²
,
Montanino
³

1996
Phys. Rev. D
119
10
154
1
View full text Add to dashboard Cite

We present a systematic analysis of the three-flavor Mikheyev-SmirnovWolfenstein (MSW) oscillation solutions to the solar neutrino problem, in the hypothesis that the two independent neutrino square mass differences, δm 2 and m 2 , are well separated: δm 2 ≪ m 2 . At zeroth order in δm 2 /m 2 , the relevant variables for solar neutrinos are δm 2 and two mixing angles, ω and φ. We introduce new graphical representations of the parameter space (δm 2 , ω, φ), that prove useful both to analyze the properties of the electronneutrino survival probability and to present the results of the analysis of solar neutrino data. We make a detailed comparison between the theoretical predictions of the Bahcall-Pinsonneault standard solar model and the current experimental results on solar neutrino rates, and discuss thoroughly the 1 MSW solutions found by spanning the whole three-flavor space (δm 2 , ω, φ).The allowed regions can be radically different from the usual "small mixing"and "large mixing" solutions, characteristic of the usual two-generation MSW approach. We also discuss the link between these results and the independent information on neutrino masses and mixings coming from accelerator and reactor oscillation searches. PACS number(s): 26.65.+t,14.60.Pq,13.15.+g.

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“…Note that it has only 4 parameters. In comparison the earlier mass matrices considered had at least 5 parameters [20,21,22]. Moreover, the above mass matrix is minimal in the sense that it has only one diagonal element.…”

mentioning
confidence: 94%

Texture of a four-neutrino mass matrix
Mohanty
¹
,
Roy
²
,
Sarkar
³

1998
Physics Letters B
19
0
11
1
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We propose a simple texture of the neutrino mass matrix with one sterile neutrino along with the three standard ones. It gives maximal mixing angles for ν e → ν S and ν µ → ν τ oscillations or vice versa. Thus with only four parameters, this mass matrix can explain the solar neutrino anomaly, atmospheric neutrino anomaly, LSND result and the hot dark matter of the universe, while satisfying all other Laboratory constraints. Depending on the choice of parameters, one can get the vacuum oscillation or the large angle MSW solution of the solar neutrino anomaly.Recently the super-Kamiokande experiment has confirmed the atmospheric neutrino oscillation result, suggesting nearly maximal mixing of ν µ with another species of neutrino [1]. The same experiment has also confirmed the solar neutrino oscillation result, which suggests mixing of ν e with another species of neutrino [2]. Moreover, the energy spectrum of the recoil electron seems to favour the large mixing-angle vacuum oscillation of ν e over the MSW solutions [2], although this may have limited statistical significance in the global fit to the solar neutrino data [3,4]. They have led to a flurry of phenomenological models for neutrino mass and mixing which can account for these oscillations [5][6][7][8], most of which are focussed on the bi-maximal mixing angles for the atmospheric and the solar neutrinos.However, almost all of these works are based on the three-neutrino formalism, involving the standard left handed neutrinos ν e , ν µ and ν τ [5].

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“…If each of these splittings is taken seriously, then a fourth neutrino is required to accomodate all the data [2]. Several such scenarios have been proposed [3]. In most cases small mass differences and small mixing angles are put in by hand, and it seems difficult to explain their origin without fine tuning.…”

Section: Introductionmentioning
confidence: 99%

Neutrino oscillations from Dirac and Majorana masses
Ring
¹

1997
Phys. Rev. D
1
0
0
0
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We present a scenario of neutrino masses and mixing angles. Each generation includes a sterile right handed neutrino in addition to the usual left handed one. We assume a hierarchy in their Dirac masses similar to, but much larger than the hierarchies in the quarks and charged leptons. In addition, we include a Majorana mass term for the sterile neutrinos only. These assumptions prove sufficient to accomodate scales of mass differences and mixing angles consistent with all existing neutrino oscillation data.

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CP-violating effects ine+e−→ZH

Cited by 11 publications

References 20 publications

Matter-enhanced three-flavor oscillations and the solar neutrino problem

Matter-enhanced three-flavor oscillations and the solar neutrino problem

Texture of a four-neutrino mass matrix

Neutrino oscillations from Dirac and Majorana masses

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