SCOAP3 Repository 11 records found  1 - 10nextSearch took 0.27 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. Dual QCD Insight into BSM Hadronic Matrix Elements for $K^0$--$\bar K^0$ Mixing from Lattice QCD / Buras, Andrzej J. ; Gérard, Jean-Marc
We calculate BSM hadronic matrix elements for $K^0$--$\bar K^0$ mixing in the Dual QCD approach (DQCD). [...]
Published in Acta Physica Polonica B 50 (2019) 121-140 10.5506/APhysPolB.50.121 arXiv:1804.02401
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3. 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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4. Emerging ΔMd -anomaly from tree-level determinations of |Vcb| and the angle γ / Blanke, Monika ; Buras, Andrzej J.
We point out that the recently increased value of the angle γ in the unitarity triangle (UT), determined in tree-level decays to be γ=(74.0-5.8+5.0)∘ by the LHCb collaboration, combined with the most recent value of |Vcb| implies an enhancement of ΔMd over the data in the ballpark of 30% . [...]
Published in EPJC 79 (2019) 159 10.1140/epjc/s10052-019-6667-x
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5. Final state interactions in K→ππ decays: ΔI=1/2 rule vs. ε′/ε / Buras, Andrzej J. ; Gérard, Jean-Marc
Dispersive effects from strong ππ rescattering in the final state interaction (FSI) of weak K→ππ decays are revisited with the goal to have a global view on their relative importance for the ΔI=1/2 rule and the ratio ε′/ε in the standard model (SM). [...]
Published in EPJC 77 (2017) 10 10.1140/epjc/s10052-016-4586-7
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6. Universal Unitarity Triangle 2016 and the tension between ΔMs,d and εK in CMFV models / Blanke, Monika ; Buras, Andrzej J.
Motivated by the recently improved results from the Fermilab Lattice and MILC Collaborations on the hadronic matrix elements entering ΔMs,d in Bs,d0 – B¯s,d0 mixing, we determine the universal unitarity triangle (UUT) in models with constrained minimal flavour violation (CMFV). [...]
Published in EPJC 76 (2016) 197 10.1140/epjc/s10052-016-4044-6
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7. Quark flavour observables in the Littlest Higgs model with T-parity after LHC Run 1 / Blanke, Monika ; Buras, Andrzej J. ; Recksiegel, Stefan
The Littlest Higgs model with T-parity (LHT) belongs to the simplest new physics scenarios with new sources of flavour and CP violation. [...]
Published in EPJC 76 (2016) 182 10.1140/epjc/s10052-016-4019-7
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8. Z - Z ′ mixing and Z -mediated FCNCs in SU(3) C × SU(3) L × U(1) X models / Andrzej J. Buras ; Fulvia De Fazio ; Jennifer Girrbach-Noe
Most of the existing analyses of flavour changing neutral current processes (FCNC) in the 331 models, based on the gauge group SU(3) C × SU(3) L × U(1) X , are fully dominated by tree-level exchanges of a new heavy neutral gauge boson Z ′. [...]
Published in JHEP 1408 (2014) 039 10.1007/JHEP08(2014)039 arXiv:1405.3850
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9. ΔI=1/2 rule, ε′/ε and K→πνν¯ in Z′(Z) and G′ models with FCNC quark couplings / Buras, Andrzej J. ; De Fazio, Fulvia ; Girrbach, Jennifer
The experimental value for the isospin amplitude ReA2 in K→ππ decays has been successfully explained within the standard model (SM), both within the large N approach to QCD and by QCD lattice calculations. [...]
Published in EPJC 74 (2014) 2950 10.1140/epjc/s10052-014-2950-z
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10. Large N approach to Kaon decays and mixing 28 years later: ΔI=1/2 rule, B^K , and ΔMK / Buras, Andrzej J. ; Gérard, Jean-Marc ; Bardeen, William A.
We review and update our results for K→ππ decays and K0 – K¯0 mixing obtained by us in the 1980s within an analytic approximate approach based on the dual representation of QCD as a theory of weakly interacting mesons for large N , where N is the number of colors. [...]
Published in EPJC 74 (2014) 2871 10.1140/epjc/s10052-014-2871-x
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