Abstract
We derive constraints on Wilson coefficients of dimension-six effective operators probing the b → s transition, using recent improved measurements of the rare decays B s → μ + μ −, B → Kμ + μ − and B → K * μ + μ − and including all relevant observables in inclusive and exclusive decays. We consider operators present in the SM as well as their chirality-flipped counterparts and scalar operators. We find good agreement with the SM expectations. Compared to the situation before winter 2012, we find significantly more stringent constraints on the chirality-flipped coefficients due to complementary constraints from B → Kμ + μ − and B → K * μ + μ − and due to the LHCb measurement of the angular observable S 3 in the latter decay. We also list the full set of observables sensitive to new physics in the low recoil region of B → K * μ + μ −.
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References
W. Altmannshofer, P. Paradisi and D.M. Straub, Model-independent constraints on new physics in b → s transitions, JHEP 04 (2012) 008 [arXiv:1111.1257] [INSPIRE].
C. Bobeth, G. Hiller and D. van Dyk, The benefits of \( \bar{B} - > {\bar{K}^{ * }}{l^{ + }}{l^{ - }} \) decays at low recoil, JHEP 07 (2010) 098 [arXiv:1006.5013] [INSPIRE].
S. Descotes-Genon, D. Ghosh, J. Matias and M. Ramon, Exploring new physics in the \( {C_{{7}}} - C_{{7}}^{\prime } \) plane, JHEP 06 (2011) 099 [arXiv:1104.3342] [INSPIRE].
C. Bobeth, G. Hiller and D. van Dyk, More benefits of semileptonic rare B decays at low recoil: CP-violation, JHEP 07 (2011) 067 [arXiv:1105.0376] [INSPIRE].
C. Bobeth, G. Hiller, D. van Dyk and C. Wacker, The decay B → Kl + l − at low hadronic recoil and model-independent ΔB = 1 constraints, JHEP 01 (2012) 107 [arXiv:1111.2558] [INSPIRE].
F. Beaujean, C. Bobeth, D. van Dyk and C. Wacker, Bayesian fit of exclusive \( b \to s\bar{\ell }\ell \) decays: the standard model operator basis, JHEP 08 (2012) 030 [arXiv:1205.1838] [INSPIRE].
D. Becirevic, N. Kosnik, F. Mescia and E. Schneider, Complementarity of the constraints on new physics from B s → μ + μ − and from B → Kℓ + ℓ − decays, arXiv:1205.5811 [INSPIRE].
K.S. Lee, Z. Ligeti, I.W. Stewart and F.J. Tackmann, Universality and m X cut effects in B → X s ℓ + ℓ −, Phys. Rev. D 74 (2006) 011501 [hep-ph/0512191] [INSPIRE].
Heavy Flavor Averaging Group collaboration, D. Asner et al., Averages of b-hadron, c-hadron and τ -lepton Properties, arXiv:1010.1589 [INSPIRE].
M. Misiak, et al., Estimate of \( B(\bar{B} \to {X_{\text{s}}}\gamma ) \) at \( O(\alpha_s^2) \), Phys. Rev. Lett. 98 (2007) 022002 [hep-ph/0609232] [INSPIRE].
M. Benzke, S.J. Lee, M. Neubert and G. Paz, Long-distance dominance of the CP Asymmetry in B → X s,d + γ decays, Phys. Rev. Lett. 106 (2011) 141801 [arXiv:1012.3167] [INSPIRE].
P. Ball, G.W. Jones and R. Zwicky, B → V γ beyond QCD factorisation, Phys. Rev. D 75 (2007) 054004 [hep-ph/0612081] [INSPIRE].
LHCb collaboration, R. Aaij et al., Strong constraints on the rare decays B s → μ + μ − and B 0 → μ + μ −, Phys. Rev. Lett. 108 (2012) 231801 [arXiv:1203.4493] [INSPIRE].
CMS collaboration, S. Chatrchyan et al., Search for \( B_s^0 \to {\mu^{ + }}{\mu^{ - }} \) and B 0 → μ + μ − decays, JHEP 04 (2012) 033 [arXiv:1203.3976] [INSPIRE].
ATLAS collaboration, G. Aad et al., Search for the decay \( B_s^0 \to \mu \mu \) with the ATLAS detector, Phys. Lett. B 713 (2012) 387 [arXiv:1204.0735] [INSPIRE].
CDF collaboration, T. Aaltonen et al., Search for B s → μ + μ − and B d → μ + μ − Decays with CDF II, Phys. Rev. Lett. 107 (2011) 239903 [arXiv:1107.2304] [INSPIRE].
BABAR collaboration, B. Aubert et al., Measurement of the B → X s ℓ + ℓ − branching fraction with a sum over exclusive modes, Phys. Rev. Lett. 93 (2004) 081802 [hep-ex/0404006] [INSPIRE].
Belle collaboration, M. Iwasaki et al., Improved measurement of the electroweak penguin process B → X s ℓ + ℓ −, Phys. Rev. D 72 (2005) 092005 [hep-ex/0503044] [INSPIRE].
T. Huber, E. Lunghi, M. Misiak and D. Wyler, Electromagnetic logarithms in \( \bar{B} \to {X_{\text{s}}}{\ell^{ + }}{\ell^{ - }} \), Nucl. Phys. B 740 (2006) 105 [hep-ph/0512066] [INSPIRE].
T. Hurth, G. Isidori, J.F. Kamenik and F. Mescia, Constraints on new physics in MFV models: a model-independent analysis of ΔF = 1 processes, Nucl. Phys. B 808 (2009) 326 [arXiv:0807.5039] [INSPIRE].
CDF collaboration, T. Aaltonen et al., Observation of the baryonic flavor-changing neutral current decay Λ b → Λμ + μ −, Phys. Rev. Lett. 107 (2011) 201802 [arXiv:1107.3753] [INSPIRE].
BELLE collaboration, J.-T. Wei et al., Measurement of the differential branching fraction and forward-backword asymmetry for B → K (*) ℓ + ℓ −, Phys. Rev. Lett. 103 (2009) 171801 [arXiv:0904.0770] [INSPIRE].
BABAR collaboration, Measurement of branching fractions and rate asymmetries in the rare decays B → K (*) l + l −, arXiv:1204.3933 [INSPIRE].
LHCb collaboration, R. Aaij et al., Measurement of the isospin asymmetry in B→K (*) μ + μ − decays, JHEP 07 (2012) 133 [arXiv:1205.3422] [INSPIRE].
LHCb collaboration, Differential branching fraction and angular analysis of the B 0 → K *0 μ + μ − decay, LHCb-CONF-2012-008 (2012).
CDF collaboration, T. Aaltonen et al., Measurements of the angular distributions in the decays B → K (*) μ + μ − at CDF, Phys. Rev. Lett. 108 (2012) 081807 [arXiv:1108.0695] [INSPIRE].
BaBar collaboration, S. Akar, Radiative-penguin results from BABAR, talk given at then Lake Louise Winter Institute 2012, February 19–25, Edmonton, U.S.A. (2012).
K. de Bruyn et al., Branching ratio measurements of B s decays, Phys. Rev. D 86 (2012) 014027 [arXiv:1204.1735] [INSPIRE].
K. de Bruyn et al., Probing new physics via the \( B_s^0 \to {\mu^{ + }}{\mu^{ - }} \) effective lifetime, Phys. Rev. Lett. 109 (2012) 041801 [arXiv:1204.1737] [INSPIRE].
LHCb collaboration, Tagged time-dependent angular analysis of \( B_s^0 \to J/\psi \phi \) decays at LHCb, LHCb-CONF-2012-002 (2012).
C. McNeile, C. Davies, E. Follana, K. Hornbostel and G. Lepage, High-precision \( {f_{{{B_s}}}} \) and HQET from relativistic lattice QCD, Phys. Rev. D 85 (2012) 031503 [arXiv:1110.4510] [INSPIRE].
Fermilab Lattice and MILC Collaborations collaboration, A. Bazavov et al., B- and D-meson decay constants from three-flavor lattice QCD, Phys. Rev. D 85 (2012) 114506 [arXiv:1112.3051] [INSPIRE].
H. Na et al., The B and B s meson decay constants from lattice QCD, arXiv:1202.4914 [INSPIRE].
C. Davies, Standard model heavy flavor physics on the lattice, PoS(LATTICE 2011)019 [arXiv:1203.3862] [INSPIRE].
C. Bobeth, G. Hiller and G. Piranishvili, CP asymmetries in bar \( B \to {\bar{K}^{ * }}{( \to \bar{K}\pi )^{{\bar{\ell }\ell }}} \) and untagged \( {\bar{B}_{\text{s}}} \) , \( {B_{\text{s}}} \to \phi {( \to {K^{ + }}{K^{ - }})^{{\bar{\ell }\ell }}} \) decays at NLO, JHEP 07 (2008) 106 [arXiv:0805.2525] [INSPIRE].
W. Altmannshofer et al., Symmetries and asymmetries of B → K * μ + μ − decays in the standard model and beyond, JHEP 01 (2009) 019 [arXiv:0811.1214] [INSPIRE].
J. Matias, F. Mescia, M. Ramon and J. Virto, Complete anatomy of \( {\bar{B}_d} \to {\bar{K}^{{ * 0}}}( \to K\pi ){l^{ + }}{l^{ - }} \) and its angular distribution, JHEP 04 (2012) 104 [arXiv:1202.4266] [INSPIRE].
C. Hambrock and G. Hiller, Extracting B → K * form factors from data, arXiv:1204.4444 [INSPIRE].
T. Feldmann and J. Matias, Forward backward and isospin asymmetry for B → K * ℓ + ℓ − decay in the standard model and in supersymmetry, JHEP 01 (2003) 074 [hep-ph/0212158] [INSPIRE].
A. Bharucha, T. Feldmann and M. Wick, Theoretical and phenomenological constraints on form factors for radiative and semi-leptonic B-meson decays, JHEP 09 (2010) 090 [arXiv:1004.3249] [INSPIRE].
C. Bobeth, G. Hiller and G. Piranishvili, Angular distributions of \( \bar{B} \to K\bar{l}l \) decays, JHEP 12 (2007) 040 [arXiv:0709.4174] [INSPIRE].
M. Beneke, T. Feldmann and D. Seidel, Systematic approach to exclusive B → V ℓ + ℓ − , V γ decays, Nucl. Phys. B 612 (2001) 25 [hep-ph/0106067] [INSPIRE].
M. Bartsch, M. Beylich, G. Buchalla and D.-N. Gao, Precision flavour physics with \( B \to K\nu \bar{\nu } \) and B→Kℓ + ℓ −, JHEP 11 (2009) 011 [arXiv:0909.1512] [INSPIRE].
M. Beylich, G. Buchalla and T. Feldmann, Theory of B → K (*) ℓ + ℓ − decays at high q 2 : OPE and quark-hadron duality, Eur. Phys. J. C 71 (2011) 1635 [arXiv:1101.5118] [INSPIRE].
BELLE collaboration, S. Nishida et al., Measurement of the CP asymmetry in B → X s γ, Phys. Rev. Lett. 93 (2004) 031803 [hep-ex/0308038] [INSPIRE].
BABAR collaboration, B. Aubert et al., A measurement of CP asymmetry in b → sγ using a sum of exclusive final states, Phys. Rev. Lett. 101 (2008) 171804 [arXiv:0805.4796] [INSPIRE].
T. Hurth, E. Lunghi and W. Porod, Untagged \( \bar{B} \to {X_{{{\text{s}} + {\text{d}}}}}\gamma \) CP asymmetry as a probe for new physics, Nucl. Phys. B 704 (2005) 56 [hep-ph/0312260] [INSPIRE].
G. Isidori, Y. Nir and G. Perez, Flavor physics constraints for physics beyond the standard model, Ann. Rev. Nucl. Part. Sci. 60 (2010) 355 [arXiv:1002.0900].
G. D’Agostini, Asymmetric uncertainties: sources, treatment and potential dangers, physics/0403086 [INSPIRE].
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Altmannshofer, W., Straub, D.M. Cornering new physics in b → s transitions. J. High Energ. Phys. 2012, 121 (2012). https://doi.org/10.1007/JHEP08(2012)121
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DOI: https://doi.org/10.1007/JHEP08(2012)121