Hint of lepton flavour non-universality in B meson decays
A bstract The LHCb collaboration has recently presented their result on R K = ℬ( B + → K + μ + μ − ) / ℬ( B + → K + e + e − ) for the dilepton invariant mass bin m ℓℓ 2 = 1 − 6 GeV 2 ( ℓ = μ, e ). The measurement shows an intriguing 2 . 6 σ deviation from the Standard Model (SM) prediction. In view...
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| Veröffentlicht in: | The journal of high energy physics 2014-12, Vol.2014 (12), p.1, Article 131 |
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| creator | Ghosh, Diptimoy Nardecchia, Marco Renner, S. A. |
| description | A
bstract
The LHCb collaboration has recently presented their result on
R
K
= ℬ(
B
+
→
K
+
μ
+
μ
−
)
/
ℬ(
B
+
→
K
+
e
+
e
−
) for the dilepton invariant mass bin
m
ℓℓ
2
= 1 − 6 GeV
2
(
ℓ
=
μ, e
). The measurement shows an intriguing 2
.
6
σ
deviation from the Standard Model (SM) prediction. In view of this, we study model independent New Physics (NP) explanations of
R
K
consistent with other measurements involving
b
→
sℓ
+
ℓ
−
transition, relaxing the assumption of lepton universality. We perform a Bayesian statistical fit to the NP Wilson Coefficients and compare the Bayes Factors of the different hypotheses in order to quantify their goodness-of-fit. We show that the data slightly favours NP in the muon sector over NP in the electron sector. |
| doi_str_mv | 10.1007/JHEP12(2014)131 |
| format | Article |
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bstract
The LHCb collaboration has recently presented their result on
R
K
= ℬ(
B
+
→
K
+
μ
+
μ
−
)
/
ℬ(
B
+
→
K
+
e
+
e
−
) for the dilepton invariant mass bin
m
ℓℓ
2
= 1 − 6 GeV
2
(
ℓ
=
μ, e
). The measurement shows an intriguing 2
.
6
σ
deviation from the Standard Model (SM) prediction. In view of this, we study model independent New Physics (NP) explanations of
R
K
consistent with other measurements involving
b
→
sℓ
+
ℓ
−
transition, relaxing the assumption of lepton universality. We perform a Bayesian statistical fit to the NP Wilson Coefficients and compare the Bayes Factors of the different hypotheses in order to quantify their goodness-of-fit. We show that the data slightly favours NP in the muon sector over NP in the electron sector.</description><identifier>ISSN: 1029-8479</identifier><identifier>EISSN: 1029-8479</identifier><identifier>DOI: 10.1007/JHEP12(2014)131</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Classical and Quantum Gravitation ; Elementary Particles ; High energy physics ; Physics ; Physics and Astronomy ; Quantum Field Theories ; Quantum Field Theory ; Quantum Physics ; Regular Article - Theoretical Physics ; Relativity Theory ; String Theory</subject><ispartof>The journal of high energy physics, 2014-12, Vol.2014 (12), p.1, Article 131</ispartof><rights>The Author(s) 2014</rights><rights>SISSA, Trieste, Italy 2014</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2661-7a10adc01ccbb60257b9e59e66089e3cda6d31e29f895de4ed3adfc50eb1cad93</citedby><cites>FETCH-LOGICAL-c2661-7a10adc01ccbb60257b9e59e66089e3cda6d31e29f895de4ed3adfc50eb1cad93</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/JHEP12(2014)131$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://doi.org/10.1007/JHEP12(2014)131$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,864,27924,27925,41120,42189,51576</link.rule.ids></links><search><creatorcontrib>Ghosh, Diptimoy</creatorcontrib><creatorcontrib>Nardecchia, Marco</creatorcontrib><creatorcontrib>Renner, S. A.</creatorcontrib><title>Hint of lepton flavour non-universality in B meson decays</title><title>The journal of high energy physics</title><addtitle>J. High Energ. Phys</addtitle><description>A
bstract
The LHCb collaboration has recently presented their result on
R
K
= ℬ(
B
+
→
K
+
μ
+
μ
−
)
/
ℬ(
B
+
→
K
+
e
+
e
−
) for the dilepton invariant mass bin
m
ℓℓ
2
= 1 − 6 GeV
2
(
ℓ
=
μ, e
). The measurement shows an intriguing 2
.
6
σ
deviation from the Standard Model (SM) prediction. In view of this, we study model independent New Physics (NP) explanations of
R
K
consistent with other measurements involving
b
→
sℓ
+
ℓ
−
transition, relaxing the assumption of lepton universality. We perform a Bayesian statistical fit to the NP Wilson Coefficients and compare the Bayes Factors of the different hypotheses in order to quantify their goodness-of-fit. We show that the data slightly favours NP in the muon sector over NP in the electron sector.</description><subject>Classical and Quantum Gravitation</subject><subject>Elementary Particles</subject><subject>High energy physics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Quantum Field Theories</subject><subject>Quantum Field Theory</subject><subject>Quantum Physics</subject><subject>Regular Article - Theoretical 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>2014</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kD1PwzAQhi0EEqUws1pigSH0zvn0CKhQUCUYYLYc-4JSpU6x00r997gKQxemu-F53zs9jF0j3CNAOXtbzD9Q3ArA7A5TPGETBCGTKivl6dF-zi5CWAFgjhImTC5aN_C-4R1tht7xptO7fuu5612yde2OfNBdO-x56_gjX1OIjCWj9-GSnTW6C3T1N6fs63n--bRIlu8vr08Py8SIosCk1AjaGkBj6roAkZe1pFxSUUAlKTVWFzZFErKpZG4pI5tq25gcqEajrUyn7Gbs3fj-Z0thUKv4oIsnFZZQgcjSTERqNlLG9yF4atTGt2vt9wpBHfyo0Y86-FHRT0zAmAiRdN_kj3r_ifwCiUxnLA</recordid><startdate>20141201</startdate><enddate>20141201</enddate><creator>Ghosh, Diptimoy</creator><creator>Nardecchia, Marco</creator><creator>Renner, S. A.</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>C6C</scope><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>20141201</creationdate><title>Hint of lepton flavour non-universality in B meson decays</title><author>Ghosh, Diptimoy ; Nardecchia, Marco ; Renner, S. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2661-7a10adc01ccbb60257b9e59e66089e3cda6d31e29f895de4ed3adfc50eb1cad93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Classical and Quantum Gravitation</topic><topic>Elementary Particles</topic><topic>High energy physics</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Quantum Field Theories</topic><topic>Quantum Field Theory</topic><topic>Quantum Physics</topic><topic>Regular Article - Theoretical Physics</topic><topic>Relativity Theory</topic><topic>String Theory</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ghosh, Diptimoy</creatorcontrib><creatorcontrib>Nardecchia, Marco</creatorcontrib><creatorcontrib>Renner, S. A.</creatorcontrib><collection>SpringerOpen</collection><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>AUTh Library subscriptions: ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>SciTech Premium Collection</collection><collection>ProQuest advanced technologies & aerospace journals</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</fulltext></delivery><addata><au>Ghosh, Diptimoy</au><au>Nardecchia, Marco</au><au>Renner, S. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hint of lepton flavour non-universality in B meson decays</atitle><jtitle>The journal of high energy physics</jtitle><stitle>J. High Energ. Phys</stitle><date>2014-12-01</date><risdate>2014</risdate><volume>2014</volume><issue>12</issue><spage>1</spage><pages>1-</pages><artnum>131</artnum><issn>1029-8479</issn><eissn>1029-8479</eissn><abstract>A
bstract
The LHCb collaboration has recently presented their result on
R
K
= ℬ(
B
+
→
K
+
μ
+
μ
−
)
/
ℬ(
B
+
→
K
+
e
+
e
−
) for the dilepton invariant mass bin
m
ℓℓ
2
= 1 − 6 GeV
2
(
ℓ
=
μ, e
). The measurement shows an intriguing 2
.
6
σ
deviation from the Standard Model (SM) prediction. In view of this, we study model independent New Physics (NP) explanations of
R
K
consistent with other measurements involving
b
→
sℓ
+
ℓ
−
transition, relaxing the assumption of lepton universality. We perform a Bayesian statistical fit to the NP Wilson Coefficients and compare the Bayes Factors of the different hypotheses in order to quantify their goodness-of-fit. We show that the data slightly favours NP in the muon sector over NP in the electron sector.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/JHEP12(2014)131</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1029-8479 |
| ispartof | The journal of high energy physics, 2014-12, Vol.2014 (12), p.1, Article 131 |
| issn | 1029-8479 1029-8479 |
| language | eng |
| recordid | cdi_proquest_journals_1708024342 |
| source | SpringerOpen; DOAJ Directory of Open Access Journals; Alma/SFX Local Collection; EZB Electronic Journals Library |
| subjects | Classical and Quantum Gravitation Elementary Particles High energy physics Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quantum Physics Regular Article - Theoretical Physics Relativity Theory String Theory |
| title | Hint of lepton flavour non-universality in B meson decays |
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