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Next-to-leading-order QCD matching for ∆F = 2 processes in scalar leptoquark models / Crivellin, Andreas (Zurich U. ; PSI, Villigen ; CERN) ; Eguren, Jordi Folch (ICC, Barcelona U. ; Dortmund U.) ; Virto, Javier (ICC, Barcelona U.)
Leptoquarks provide viable solutions to the flavour anomalies, i.e. they can explain the tensions between the measurements and the Standard Model predictions of the anomalous magnetic moment of the muon as well as $b\to s\ell^+\ell^-$ and $b\to c\tau\nu$ processes. [...]
arXiv:2109.13600; PSI-PR-21-22; ZU-TH 46/21.- 2022-03-28 - 36 p. - Published in : JHEP 2203 (2022) 185 Fulltext: 2109.13600 - PDF; Publication - PDF;

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(91)

Scalar Leptoquarks in Leptonic Processes / Crivellin, Andreas (CERN ; Zurich U. ; PSI, Villigen) ; Greub, Christoph (U. Bern, AEC) ; Müller, Dario (Zurich U. ; PSI, Villigen) ; Saturnino, Francesco (U. Bern, AEC)
Leptoquarks are hypothetical new particles, which couple quarks directly to leptons. They experienced a renaissance in recent years as they are prime candidates to explain the so-called \textit{flavor anomalies}, i.e. [...]
arXiv:2010.06593; CERN-TH-2020-167; PSI-20-17; ZU-TH 38/20.- 2021-02-22 - 60 p. - Published in : JHEP 2102 (2021) 182 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;

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(59)

Overview of flavour physics with focus on the MSSM and 2HDMs / Crivellin, Andreas (CERN)
In these proceedings we give a concise review of some selected flavour-violation processes and their implications for two-Higgs-doublet models (2HDMs) and the MSSM. The processes under investigation are $\Delta F=2$ processes, $B_s\to\mu^+\mu^-$, $b\to s\gamma$, and tauonic $B$ decays. [...]
arXiv:1405.3701; CERN-PH-TH-2014-090.- 2014 - 4 p. External link: Preprint
In : 49th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 22 - 29 Mar 2014, pp.103-106

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(48)

Challenges for New Physics in the Flavour Sector / Crivellin, Andreas (CERN)
In these proceedings I present a personal perspective of the challenges for new physics (NP) searches in the flavour sector. [...]
arXiv:1409.0922 ; CERN-PH-TH-2014-166. - 2014. - 27 p.
Preprint - Full text

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(41)

Lepton-flavour violating $B$ decays in generic $Z'$ models / Crivellin, Andreas (CERN) ; Hofer, Lars (Barcelona, Autonoma U.) ; Matias, Joaquim (Barcelona, Autonoma U.) ; Nierste, Ulrich (KIT, Karlsruhe, TTP) ; Pokorski, Stefan (Warsaw U.) ; Rosiek, Janusz (Warsaw U.)
LHCb has reported deviations from the SM expectations in $B\to K^* \mu^+\mu^-$ angular observables, in $B_s\to\phi\mu^+\mu^-$ and in ratio $R(K)=Br[B\to K \mu^+\mu^-]/Br[B\to K e^+e^-]$. For all three decays, a heavy neutral gauge boson mediating $b\to s\mu^+\mu^-$ transitions is a prime candidate for an explanation. [...]
arXiv:1504.07928; CERN-PH-TH-2015-091.- Geneva : CERN, 2015 - 10 p. - Published in : Phys. Rev. D 92 (2015) 054013 APS Open Access article: PDF; Fulltext: PDF; External link: Preprint

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(38)

Flavour anomalies in $b\to sl^{+}l^{-}$ and $b\to cl\nu_{l}$ transitions / Florian Reiss /ATLAS and CMS Collaborations
Flavour anomalies observed in $b\to sl^{+}l^{-}$ and $b\to cl\nu_{l}$ transitions show tantalising tensions with the predictions of the Standard Model. Anomalies in absolute and relative branching fractions and angular observables measured by the LHCb, CMS and ATLAS collaborations are reviewed. [...]
CMS-CR-2024-019.- Geneva : CERN, 2024 - 11 p. - Published in : PoS LHCP2023 (2024) 212 Fulltext: PDF;
In : 11th Large Hadron Collider Physics Conference 2023, Belgrade, Serbia, 22 - 26 May 2023, pp.212

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(34)

Scalar flavour-changing neutral currents in the large-tan(beta) limit / Isidori, Gino ; Retico, A
We analyse scalar flavour-changing neutral currents of down-type quarks in models with two Higgs doublets, coupled separately to up- and down-type quarks, in the limit where the ratio of the two expectation values ($\tan \beta = v_u/v_d$) is large. We clarify the origin of this phenomenon, both in $\Delta F=1$ and $\Delta F=2$ processes, analysing differences and analogies between supersymmetric and non-supersymmetric models. [...]
hep-ph/0110121; CERN-TH-2001-266.- Geneva : CERN, 2001 - 22 p. - Published in : JHEP 11 (2001) 001 Access to fulltext document: PDF; SISSA/IOP Published version, local copy: PDF; External link: hep-ph/0110121 PDF - CERN library copies

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(32)

Quark flavour observables in the Littlest Higgs model with T-parity after LHC Run 1 / Blanke, Monika (CERN ; KIT, Karlsruhe, IKP ; KIT, Karlsruhe, TTP) ; Buras, Andrzej J. (Munich, Tech. U. ; TUM-IAS, Munich) ; Recksiegel, Stefan (Munich, Tech. U.)
The Littlest Higgs Model with T-parity (LHT) belongs to the simplest new physics scenarios with new sources of flavour and CP violation. We present a new analysis of quark observables in the LHT model in view of the oncoming flavour precision era. [...]
arXiv:1507.06316; CERN-PH-TH-2015-158; TTP15-023; FLAVOUR(267104)-ERC-104; CERN-PH-TH-2015-158; TTP15-023; FLAVOUR(267104)-ERC-104.- Geneva : CERN, 2016-04-02 - 34 p. - Published in : Eur. Phys. J. C 7 (2016) 6 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint

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(30)

New Physics in $B$ decays / Crivellin, Andreas (CERN)
While the LHC did not observe direct evidence for physics beyond the standard model, indirect hints for new physics were uncovered in the flavour sector in the decays $B\to K^*\mu^+\mu^-$, $B\to K\mu^+\mu^-/B\to Ke^+e^-$, $B_s\to\phi\mu^+\mu^-$, $B\to D^{(*)}\tau\nu$ and $h\to\tau^\pm\mu^\mp$. Each observable deviates from the SM predictions at the $2-3\,\sigma$ level only, but combining all $b\to s\mu^+\mu^-$ data via a global fit, one finds $4-5\,\sigma$ difference for NP compared to the SM and combining $B\to D^{*}\tau\nu$ with $B\to D\tau\nu$ one obtains $3.9\,\sigma$. [...]
CERN-PH-TH-2015-270; arXiv:1511.04015; CERN-PH-TH-2015-270.- Geneva : CERN, 2016-04-26 - 9 p. - Published in : EPJ Web Conf. 118 (2016) 01007 Fulltext: PDF; Preprint: PDF; External link: Preprint
In : Workshop on Flavour changing and conserving processes 2015, Anacapri, Capri Island, Italy, 10 - 12 Sep 2015, pp.01007

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(30)

Upper limit for the decay $B^{-}\to \tau ^{-} \overline{\nu}_{\tau}$ and measurement of the branching ratio $b\to \tau\overline{\nu}_{\tau}X$ / Sokolov, A ; Zucchelli, G C
CERN-OPEN-2000-017 ; CERN-DELPHI-98-127-CONF-188. - 1998. - 18 p.
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