Minimal flavour violation extensions of the seesaw
We analyze the most natural formulations of the minimal lepton flavour violation hypothesis compatible with a type-I seesaw structure with three heavy singlet neutrinos N , and satisfying the requirement of being predictive, in the sense that all LFV effects can be expressed in terms of low energy o...
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| Veröffentlicht in: | The journal of high energy physics 2011-06, Vol.2011 (6), Article 37 |
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| container_title | The journal of high energy physics |
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| creator | Alonso, Rodrigo Isidori, Gino Merlo, Luca Muñoz, Luis Alfredo Nardi, Enrico |
| description | We analyze the most natural formulations of the minimal lepton flavour violation hypothesis compatible with a type-I seesaw structure with three heavy singlet neutrinos
N
, and satisfying the requirement of being predictive, in the sense that all LFV effects can be expressed in terms of low energy observables. We find a new interesting realization based on the flavour group SU(3)
e
× SU(3)
ℓ
+
N
(being
e
and
ℓ
respectively the SU(2) singlet and doublet leptons). An intriguing feature of this realization is that, in the normal hierarchy scenario for neutrino masses, it allows for sizeable enhancements of
μ
→
e
transitions with respect to LFV processes involving the
τ
lepton. We also discuss how the symmetries of the type-I seesaw allow for a strong suppression of the
N
mass scale with respect to the scale of lepton number breaking, without implying a similar suppression for possible mechanisms of
N
production. |
| doi_str_mv | 10.1007/JHEP06(2011)037 |
| format | Article |
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N
, and satisfying the requirement of being predictive, in the sense that all LFV effects can be expressed in terms of low energy observables. We find a new interesting realization based on the flavour group SU(3)
e
× SU(3)
ℓ
+
N
(being
e
and
ℓ
respectively the SU(2) singlet and doublet leptons). An intriguing feature of this realization is that, in the normal hierarchy scenario for neutrino masses, it allows for sizeable enhancements of
μ
→
e
transitions with respect to LFV processes involving the
τ
lepton. We also discuss how the symmetries of the type-I seesaw allow for a strong suppression of the
N
mass scale with respect to the scale of lepton number breaking, without implying a similar suppression for possible mechanisms of
N
production.</description><identifier>ISSN: 1029-8479</identifier><identifier>EISSN: 1029-8479</identifier><identifier>DOI: 10.1007/JHEP06(2011)037</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer-Verlag</publisher><subject>Classical and Quantum Gravitation ; Elementary Particles ; Flavor (particle physics) ; High energy physics ; Leptons ; Neutrinos ; Physics ; Physics and Astronomy ; Quantum Field Theories ; Quantum Field Theory ; Quantum Physics ; Relativity Theory ; String Theory</subject><ispartof>The journal of high energy physics, 2011-06, Vol.2011 (6), Article 37</ispartof><rights>SISSA, Trieste, Italy 2011</rights><rights>SISSA, Trieste, Italy 2011.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c310t-da8abdadcfcf96dca4ad902f74994a4c168b2b8efffa686929016f16ef76fcfa3</citedby><cites>FETCH-LOGICAL-c310t-da8abdadcfcf96dca4ad902f74994a4c168b2b8efffa686929016f16ef76fcfa3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/JHEP06(2011)037$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/JHEP06(2011)037$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,778,782,27911,27912,41107,41475,42176,42544,51306,51563</link.rule.ids><linktorsrc>$$Uhttps://doi.org/10.1007/JHEP06(2011)037$$EView_record_in_Springer_Nature$$FView_record_in_$$GSpringer_Nature</linktorsrc></links><search><creatorcontrib>Alonso, Rodrigo</creatorcontrib><creatorcontrib>Isidori, Gino</creatorcontrib><creatorcontrib>Merlo, Luca</creatorcontrib><creatorcontrib>Muñoz, Luis Alfredo</creatorcontrib><creatorcontrib>Nardi, Enrico</creatorcontrib><title>Minimal flavour violation extensions of the seesaw</title><title>The journal of high energy physics</title><addtitle>J. High Energ. Phys</addtitle><description>We analyze the most natural formulations of the minimal lepton flavour violation hypothesis compatible with a type-I seesaw structure with three heavy singlet neutrinos
N
, and satisfying the requirement of being predictive, in the sense that all LFV effects can be expressed in terms of low energy observables. We find a new interesting realization based on the flavour group SU(3)
e
× SU(3)
ℓ
+
N
(being
e
and
ℓ
respectively the SU(2) singlet and doublet leptons). An intriguing feature of this realization is that, in the normal hierarchy scenario for neutrino masses, it allows for sizeable enhancements of
μ
→
e
transitions with respect to LFV processes involving the
τ
lepton. We also discuss how the symmetries of the type-I seesaw allow for a strong suppression of the
N
mass scale with respect to the scale of lepton number breaking, without implying a similar suppression for possible mechanisms of
N
production.</description><subject>Classical and Quantum Gravitation</subject><subject>Elementary Particles</subject><subject>Flavor (particle physics)</subject><subject>High energy physics</subject><subject>Leptons</subject><subject>Neutrinos</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Quantum Field Theories</subject><subject>Quantum Field Theory</subject><subject>Quantum Physics</subject><subject>Relativity Theory</subject><subject>String Theory</subject><issn>1029-8479</issn><issn>1029-8479</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kDFPwzAQhS0EEqUws0ZigSH07BjHHlHVUlARDDBbF8eGVCEudlrg3-MqSLAw3Rve9-7uEXJK4ZIClJO7xewRxDkDSi-gKPfIiAJTueSl2v-jD8lRjCsAekUVjAi7b7rmDdvMtbj1m5BtG99i3_gus5-97WJSMfMu619tFq2N-HFMDhy20Z78zDF5ns-epot8-XBzO71e5qag0Oc1SqxqrI0zTonaIMdaAXMlV4ojN1TIilXSOudQSKGYAiocFdaVIiFYjMnZkLsO_n1jY69X6cAurdSsUJJxKCRPrsngMsHHGKzT65AeCl-agt4Vo4di9K4YnYpJBAxETM7uxYbf3P-Qb3i1Ze0</recordid><startdate>20110601</startdate><enddate>20110601</enddate><creator>Alonso, Rodrigo</creator><creator>Isidori, Gino</creator><creator>Merlo, Luca</creator><creator>Muñoz, Luis Alfredo</creator><creator>Nardi, Enrico</creator><general>Springer-Verlag</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>P5Z</scope><scope>P62</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20110601</creationdate><title>Minimal flavour violation extensions of the seesaw</title><author>Alonso, Rodrigo ; Isidori, Gino ; Merlo, Luca ; Muñoz, Luis Alfredo ; Nardi, Enrico</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c310t-da8abdadcfcf96dca4ad902f74994a4c168b2b8efffa686929016f16ef76fcfa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Classical and Quantum Gravitation</topic><topic>Elementary Particles</topic><topic>Flavor (particle physics)</topic><topic>High energy physics</topic><topic>Leptons</topic><topic>Neutrinos</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Quantum Field Theories</topic><topic>Quantum Field Theory</topic><topic>Quantum Physics</topic><topic>Relativity Theory</topic><topic>String Theory</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Alonso, Rodrigo</creatorcontrib><creatorcontrib>Isidori, Gino</creatorcontrib><creatorcontrib>Merlo, Luca</creatorcontrib><creatorcontrib>Muñoz, Luis Alfredo</creatorcontrib><creatorcontrib>Nardi, Enrico</creatorcontrib><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection (ProQuest)</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>The journal of high energy physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Alonso, Rodrigo</au><au>Isidori, Gino</au><au>Merlo, Luca</au><au>Muñoz, Luis Alfredo</au><au>Nardi, Enrico</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Minimal flavour violation extensions of the seesaw</atitle><jtitle>The journal of high energy physics</jtitle><stitle>J. High Energ. Phys</stitle><date>2011-06-01</date><risdate>2011</risdate><volume>2011</volume><issue>6</issue><artnum>37</artnum><issn>1029-8479</issn><eissn>1029-8479</eissn><abstract>We analyze the most natural formulations of the minimal lepton flavour violation hypothesis compatible with a type-I seesaw structure with three heavy singlet neutrinos
N
, and satisfying the requirement of being predictive, in the sense that all LFV effects can be expressed in terms of low energy observables. We find a new interesting realization based on the flavour group SU(3)
e
× SU(3)
ℓ
+
N
(being
e
and
ℓ
respectively the SU(2) singlet and doublet leptons). An intriguing feature of this realization is that, in the normal hierarchy scenario for neutrino masses, it allows for sizeable enhancements of
μ
→
e
transitions with respect to LFV processes involving the
τ
lepton. We also discuss how the symmetries of the type-I seesaw allow for a strong suppression of the
N
mass scale with respect to the scale of lepton number breaking, without implying a similar suppression for possible mechanisms of
N
production.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/JHEP06(2011)037</doi><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | Classical and Quantum Gravitation Elementary Particles Flavor (particle physics) High energy physics Leptons Neutrinos Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quantum Physics Relativity Theory String Theory |
| title | Minimal flavour violation extensions of the seesaw |
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