Collider signature of <i>U</i> <sub>1</sub> Leptoquark and constraints from <i>b</i> → <i>c</i> observables
Aritra Biswas, Dilip Kumar Ghosh, Nivedita Ghosh, Avirup Shaw, Abhaya Kumar Swain
Abstract
Abstract One of the most popular models that is known to be able to solve the lepton flavour universality violating charged ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>b</mml:mi> <mml:mo>→</mml:mo> <mml:mi>c</mml:mi> </mml:math> ) and neutral current ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>b</mml:mi> <mml:mo>→</mml:mo> <mml:mi>s</mml:mi> </mml:math> ) anomalies is the Leptoquark Model. In this work we examine the multijet + <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:menclose notation="updiagonalstrike"> <mml:mi>E</mml:mi> </mml:menclose> </mml:mrow> <mml:mrow> <mml:mi>T</mml:mi> </mml:mrow> </mml:msub> </mml:math> collider signature of a vector leptoquark ( U 1 ) which has the potential to mediate both the charged and neutral current processes at tree level. From our collider analysis we derive the exclusion limits on mass for the U 1 leptoquark at 95% C.L. at the current and future experiment of the Large Hadron Collider. We also calculate the effect of such a leptoquark in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>b</mml:mi> <mml:mo>→</mml:mo> <mml:mi>c</mml:mi> </mml:math> observables.