Searching for resonant flavor-changing charged Higgs production at the LHC

We suggest a resonant <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>c</a:mi><a:mover accent="true"><a:mi>b</a:mi><a:mo stretchy="false">¯</a:mo></a:mover><a:mo stretchy="false">→</a:mo><a:msup><a:mi>H</a:mi><a:mo>+</a:mo></a:msup></a:math> production search, followed by bosonic <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"><f:msup><f:mi>H</f:mi><f:mo>+</f:mo></f:msup><f:mo stretchy="false">→</f:mo><f:msup><f:mi>W</f:mi><f:mo>+</f:mo></f:msup><f:mi>H</f:mi></f:math> weak decay at the Large Hadron Collider (LHC). In the general two-Higgs-doublet model (G2HDM) that has flavor-changing neutral Higgs couplings, <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"><i:msup><i:mi>H</i:mi><i:mo>+</i:mo></i:msup></i:math> is resonantly produced via the top-charm <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"><k:msub><k:mi>ρ</k:mi><k:mrow><k:mi>t</k:mi><k:mi>c</k:mi></k:mrow></k:msub><k:msub><k:mi>V</k:mi><k:mrow><k:mi>t</k:mi><k:mi>b</k:mi></k:mrow></k:msub></k:math> coupling at tree level, while <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"><m:msup><m:mi>H</m:mi><m:mo>+</m:mo></m:msup><m:mo stretchy="false">→</m:mo><m:msup><m:mi>W</m:mi><m:mo>+</m:mo></m:msup><m:mi>H</m:mi></m:math> weak decay occurs within the exotic second doublet, leading eventually to same-sign dilepton signals. We perform a signal-to-background analysis at the 14 TeV LHC and show that discovery seems possible with LHC Run 2 data already at hand.