SCOAP3 Repository 13 records found  1 - 10nextSearch took 0.24 seconds. 
1. Master formula for ε ′ / ε beyond the Standard Model / Aebischer, Jason ; Bobeth, Christoph ; Buras, Andrzej J. ; Gérard, Jean-Marc ; et al
We present for the first time a master formula for ε′/ε , the ratio probing direct CP violation in K→ππ decays, valid in any ultraviolet extension of the Standard Model (BSM). [...]
Published in Physics letters B 792 (2019) 465-469 10.1016/j.physletb.2019.04.016
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2. Anatomy of ε′/ε beyond the standard model / Aebischer, Jason ; Bobeth, Christoph ; Buras, Andrzej J. ; Straub, David M.
We present for the first time a model-independent anatomy of the ratio ε′/ε in the context of the ΔS=1 effective theory with operators invariant under QCD and QED and in the context of the standard model effective field theory (SMEFT) with the operators invariant under the full SM gauge group. [...]
Published in EPJC 79 (2019) 219 10.1140/epjc/s10052-019-6715-6
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3. Long-distance effects in B→K∗ℓℓ from analyticity / Bobeth, Christoph ; Chrzaszcz, Marcin ; van Dyk, Danny ; Virto, Javier
We discuss a novel approach to systematically determine the dominant long-distance contribution to B→K∗ℓℓ decays in the kinematic region where the dilepton invariant mass is below the open charm threshold. [...]
Published in EPJC 78 (2018) 451 10.1140/epjc/s10052-018-5918-6
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4. Leptoquarks meet ε ′ / ε and rare Kaon processes / Bobeth, Christoph ; Buras, Andrzej
We analyse for the first time the CP violating ratio ε ′ / ε in K → ππ decays in leptoquark (LQ) models. [...]
Published in JHEP 1802 (2018) 101 10.1007/JHEP02(2018)101 arXiv:1712.01295
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5. Enhanced Electromagnetic Corrections to the Rare Decay Bs,dμ+μ / Beneke, Martin ; Bobeth, Christoph ; Szafron, Robert
We investigate electromagnetic corrections to the rare B-meson leptonic decay Bs,dμ+μ from scales below the bottom-quark mass mb. [...]
Published in Phys. Rev. Lett. 120 (2018) 10.1103/PhysRevLett.120.011801 arXiv:1708.09152
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6. Yukawa enhancement of Z -mediated new physics in ∆ S = 2 and ∆ B = 2 processes / Bobeth, Christoph ; Buras, Andrzej ; Celis, Alejandro ; Jung, Martin
We discuss Yukawa-enhanced contributions from Z -mediated new physics to down-type quark Δ F = 2 processes in the framework of the standard model gauge-invariant effective theory (SMEFT). [...]
Published in JHEP 1707 (2017) 124 10.1007/JHEP07(2017)124 arXiv:1703.04753
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7. Patterns of flavour violation in models with vector-like quarks / Bobeth, Christoph ; Buras, Andrzej ; Celis, Alejandro ; Jung, Martin
We study the patterns of flavour violation in renormalisable extensions of the Standard Model (SM) that contain vector-like quarks (VLQs) in a single complex representation of either the SM gauge group G SM or G SM ′ ≡ G SM  ⊗ U(1)L μ  − L τ . [...]
Published in JHEP 1704 (2017) 079 10.1007/JHEP04(2017)079 arXiv:1609.04783
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8. Constraints on tensor and scalar couplings from B→Kμ¯μ and Bs→μ¯μ / Beaujean, Frederik ; Bobeth, Christoph ; Jahn, Stephan
The angular distribution of ( ℓ=e,μ,τ ) depends on two parameters, the lepton forward–backward asymmetry, AFBℓ , and the flat term, FHℓ . [...]
Published in EPJC 75 (2015) 456 10.1140/epjc/s10052-015-3676-2
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9. Anomalous triple gauge couplings from B -meson and kaon observables / Bobeth, Christoph ; Haisch, Ulrich
We consider the three CP-conserving dimension-6 operators that encode the leading new-physics effects in the triple gauge couplings. [...]
Published in JHEP 1509 (2015) 018 10.1007/JHEP09(2015)018 arXiv:1503.04829
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10. Weak annihilation and new physics in charmless B→MM decays / Bobeth, Christoph ; Gorbahn, Martin ; Vickers, Stefan
We use currently available data of nonleptonic charmless 2-body B→MM decays ( MM=PP,PV,VV ) that are mediated by b→(d,s) QCD- and QED-penguin operators to study weak annihilation and new-physics effects in the framework of QCD factorization. [...]
Published in EPJC 75 (2015) 340 10.1140/epjc/s10052-015-3535-1
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SCOAP3 Repository : 13 records found   1 - 10next
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