Search for new resonances decaying to a W or Z boson and a Higgs boson in the <math><msup is="true"><mrow is="true"><mi is="true">ℓ</mi></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup><msup is="true"><mrow is="true"><mi is="true">ℓ</mi></mrow><mrow is="true"><mo is="true">−</mo></mrow></msup><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math>, <math><mi is="true">ℓ</mi><mi is="true">ν</mi><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> and <math><mi is="true">ν</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">ν</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> channels with pp collisions at √s = 13 TeV with the ATLAS detector

Abstract

A search is presented for new resonances decaying to a W or Z boson and a Higgs boson in the <math><msup is="true"><mrow is="true"><mi is="true">ℓ</mi></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup><msup is="true"><mrow is="true"><mi is="true">ℓ</mi></mrow><mrow is="true"><mo is="true">−</mo></mrow></msup><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math>, <math><mi is="true">ℓ</mi><mi is="true">ν</mi><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> and <math><mi is="true">ν</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">ν</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> channels in pp collisions at √s = 13 TeV with the ATLAS detector at the Large Hadron Collider using a total integrated luminosity of 3.2 fb−1. The search is conducted by looking for a localized excess in the W H/Z H invariant or transverse mass distribution. No significant excess is observed, and the results are interpreted in terms of constraints on a simplified model based on a phenomenological Lagrangian of heavy vector triplets.