B_{s,d} -> l+ l- in the Standard Model

We combine our new results for the O(alpha_em) and O(alpha_s^2) corrections to B_{s,d} -> l^+ l^-, and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just...

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Detalles Bibliográficos
Autores principales: Bobeth, Christoph, Gorbahn, Martin, Hermann, Thomas, Misiak, Mikolaj, Stamou, Emmanuel, Steinhauser, Matthias
Lenguaje:eng
Publicado: 2013
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.112.101801
http://cds.cern.ch/record/1624498
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author Bobeth, Christoph
Gorbahn, Martin
Hermann, Thomas
Misiak, Mikolaj
Stamou, Emmanuel
Steinhauser, Matthias
author_facet Bobeth, Christoph
Gorbahn, Martin
Hermann, Thomas
Misiak, Mikolaj
Stamou, Emmanuel
Steinhauser, Matthias
author_sort Bobeth, Christoph
collection CERN
description We combine our new results for the O(alpha_em) and O(alpha_s^2) corrections to B_{s,d} -> l^+ l^-, and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just begun to dominate over the parametric ones. For the recently observed muonic decay of the B_s meson, our calculation gives BR(B_s -> mu^+ mu^-) = (3.65 +_ 0.23) * 10^(-9).
id cern-1624498
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-16244982021-10-29T02:23:35Zdoi:10.1103/PhysRevLett.112.101801http://cds.cern.ch/record/1624498engBobeth, ChristophGorbahn, MartinHermann, ThomasMisiak, MikolajStamou, EmmanuelSteinhauser, MatthiasB_{s,d} -> l+ l- in the Standard ModelParticle Physics - PhenomenologyWe combine our new results for the O(alpha_em) and O(alpha_s^2) corrections to B_{s,d} -> l^+ l^-, and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just begun to dominate over the parametric ones. For the recently observed muonic decay of the B_s meson, our calculation gives BR(B_s -> mu^+ mu^-) = (3.65 +_ 0.23) * 10^(-9).<p>We combine our new results for the <inline-formula><mml:math display="inline"><mml:mrow><mml:mi mathvariant="script">O</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mrow><mml:mi>α</mml:mi></mml:mrow><mml:mrow><mml:mi>e</mml:mi><mml:mi>m</mml:mi></mml:mrow></mml:msub><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math></inline-formula> and <inline-formula><mml:math display="inline"><mml:mrow><mml:mi mathvariant="script">O</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:msubsup><mml:mrow><mml:mi>α</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msubsup><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math></inline-formula> corrections to <inline-formula><mml:math display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi><mml:mo>,</mml:mo><mml:mi>d</mml:mi></mml:mrow></mml:msub><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mo>ℓ</mml:mo></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mo>ℓ</mml:mo></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math></inline-formula>, and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just begun to dominate over the parametric ones. For the recently observed muonic decay of the <inline-formula><mml:math display="inline"><mml:msub><mml:mi>B</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math></inline-formula> meson, our calculation gives <inline-formula><mml:math display="inline"><mml:mrow><mml:mover accent="true"><mml:mrow><mml:mi mathvariant="script">B</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="true">¯</mml:mo></mml:mrow></mml:mover><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msub><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>μ</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>μ</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:mo stretchy="false">)</mml:mo><mml:mo>=</mml:mo><mml:mo stretchy="false">(</mml:mo><mml:mn>3.65</mml:mn><mml:mo>±</mml:mo><mml:mn>0.23</mml:mn><mml:mo stretchy="false">)</mml:mo><mml:mo>×</mml:mo><mml:msup><mml:mrow><mml:mn>10</mml:mn></mml:mrow><mml:mrow><mml:mo>−</mml:mo><mml:mn>9</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math></inline-formula>.</p>We combine our new results for the O(alpha_em) and O(alpha_s^2) corrections to B_{s,d} -> l^+ l^-, and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just begun to dominate over the parametric ones. For the recently observed muonic decay of the B_s meson, our calculation gives BR(B_s -> mu^+ mu^-) = (3.65 +_ 0.23) * 10^(-9).arXiv:1311.0903FLAVOUR(267104)-ERC-53LTH-990SFB-CPP-13-82TTP13-033FLAVOUR(267104)-ERC-53LTH 990SFB-CPP-13-82TTP13-033oai:cds.cern.ch:16244982013-11-04
spellingShingle Particle Physics - Phenomenology
Bobeth, Christoph
Gorbahn, Martin
Hermann, Thomas
Misiak, Mikolaj
Stamou, Emmanuel
Steinhauser, Matthias
B_{s,d} -> l+ l- in the Standard Model
title B_{s,d} -> l+ l- in the Standard Model
title_full B_{s,d} -> l+ l- in the Standard Model
title_fullStr B_{s,d} -> l+ l- in the Standard Model
title_full_unstemmed B_{s,d} -> l+ l- in the Standard Model
title_short B_{s,d} -> l+ l- in the Standard Model
title_sort b_{s,d} -> l+ l- in the standard model
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevLett.112.101801
http://cds.cern.ch/record/1624498
work_keys_str_mv AT bobethchristoph bsdllinthestandardmodel
AT gorbahnmartin bsdllinthestandardmodel
AT hermannthomas bsdllinthestandardmodel
AT misiakmikolaj bsdllinthestandardmodel
AT stamouemmanuel bsdllinthestandardmodel
AT steinhausermatthias bsdllinthestandardmodel

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