Exploring vector-like B-quark pair production at CLIC in fully hadronic final states

Abstract We investigate the discovery potential of the $$3~\textrm{TeV}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>3</mml:mn> <mml:mspace/> <mml:mtext>TeV</mml:mtext> </mml:mrow> </mml:math> Compact Linear Collider (CLIC) for a singlet vector-like bottom partner B decaying via $$B \rightarrow tW.$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>B</mml:mi> <mml:mo>→</mml:mo> <mml:mi>t</mml:mi> <mml:mi>W</mml:mi> <mml:mo>.</mml:mo> </mml:mrow> </mml:math> Focusing on the fully hadronic final state $$B\bar{B} \rightarrow tW\,tW,$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>B</mml:mi> <mml:mover> <mml:mrow> <mml:mi>B</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mo>→</mml:mo> <mml:mi>t</mml:mi> <mml:mi>W</mml:mi> <mml:mspace/> <mml:mi>t</mml:mi> <mml:mi>W</mml:mi> <mml:mo>,</mml:mo> </mml:mrow> </mml:math> we reconstruct boosted top and W candidates using large- R Valencia jets, supplemented by a merging strategy for partially resolved decays. A systematic scan of the jet-radius parameter identifies $$R=0.8$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>R</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0.8</mml:mn> </mml:mrow> </mml:math> as the optimal choice, balancing boosted-jet containment with jet multiplicity. Using a cut-based analysis optimized for the $$(2t+2W)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>2</mml:mn> <mml:mi>t</mml:mi> <mml:mo>+</mml:mo> <mml:mn>2</mml:mn> <mml:mi>W</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> topology and an integrated luminosity of $$5~\textrm{ab}^{-1},$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>5</mml:mn> <mml:mspace/> <mml:msup> <mml:mtext>ab</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> <mml:mo>,</mml:mo> </mml:mrow> </mml:math> CLIC can achieve sensitivity to $$m_B \lesssim 1.5~\textrm{TeV}.$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>m</mml:mi> <mml:mi>B</mml:mi> </mml:msub> <mml:mo>≲</mml:mo> <mml:mn>1.5</mml:mn> <mml:mspace/> <mml:mtext>TeV</mml:mtext> <mml:mo>.</mml:mo> </mml:mrow> </mml:math> These results highlight CLIC’s excellent capability to probe heavy vector-like quarks in high jet multiplicity environments, extending well beyond the reach of current hadron collider searches.

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Journal
The European Physical Journal C
Published
2026-03-04
DOI
https://doi.org/10.1140/epjc/s10052-026-15400-0
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
0.00

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article

Exploring vector-like B-quark pair production at CLIC in fully hadronic final states

Baoxia Wang, Rui Zhu, Shuo Yang
The European Physical Journal C
Particle physics theoretical and experimental studies
article

Exploring vector-like B-quark pair production at CLIC in fully hadronic final states

Baoxia Wang, Rui Zhu, Shuo Yang
article en

Abstract

Abstract We investigate the discovery potential of the $$3~\textrm{TeV}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>3</mml:mn> <mml:mspace/> <mml:mtext>TeV</mml:mtext> </mml:mrow> </mml:math> Compact Linear Collider (CLIC) for a singlet vector-like bottom partner B decaying via $$B \rightarrow tW.$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>B</mml:mi> <mml:mo>→</mml:mo> <mml:mi>t</mml:mi> <mml:mi>W</mml:mi> <mml:mo>.</mml:mo> </mml:mrow> </mml:math> Focusing on the fully hadronic final state $$B\bar{B} \rightarrow tW\,tW,$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>B</mml:mi> <mml:mover> <mml:mrow> <mml:mi>B</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> <mml:mo>→</mml:mo> <mml:mi>t</mml:mi> <mml:mi>W</mml:mi> <mml:mspace/> <mml:mi>t</mml:mi> <mml:mi>W</mml:mi> <mml:mo>,</mml:mo> </mml:mrow> </mml:math> we reconstruct boosted top and W candidates using large- R Valencia jets, supplemented by a merging strategy for partially resolved decays. A systematic scan of the jet-radius parameter identifies $$R=0.8$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>R</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0.8</mml:mn> </mml:mrow> </mml:math> as the optimal choice, balancing boosted-jet containment with jet multiplicity. Using a cut-based analysis optimized for the $$(2t+2W)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>2</mml:mn> <mml:mi>t</mml:mi> <mml:mo>+</mml:mo> <mml:mn>2</mml:mn> <mml:mi>W</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> topology and an integrated luminosity of $$5~\textrm{ab}^{-1},$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>5</mml:mn> <mml:mspace/> <mml:msup> <mml:mtext>ab</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> <mml:mo>,</mml:mo> </mml:mrow> </mml:math> CLIC can achieve sensitivity to $$m_B \lesssim 1.5~\textrm{TeV}.$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>m</mml:mi> <mml:mi>B</mml:mi> </mml:msub> <mml:mo>≲</mml:mo> <mml:mn>1.5</mml:mn> <mml:mspace/> <mml:mtext>TeV</mml:mtext> <mml:mo>.</mml:mo> </mml:mrow> </mml:math> These results highlight CLIC’s excellent capability to probe heavy vector-like quarks in high jet multiplicity environments, extending well beyond the reach of current hadron collider searches.

The European Physical Journal CVol. 86(3)
Liaoning Normal University (CN), The University of Adelaide (AU)
National Natural Science Foundation of China
Openalex Percentile: Top 34%
Particle physics theoretical and experimental studies
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