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We consider, at order $\alpha_s^2$ in the QCD coupling, top-quark pair production in the continuum at various center-of-mass energies and $b$-quark pair production at the $Z$ resonance by (un)polarized electron and positron beams. For top…

High Energy Physics - Phenomenology · Physics 2023-05-22 Werner Bernreuther , Long Chen , Peng-Cheng Lu , Zong-Guo Si

We investigate the production of heavy, neutral Higgs boson resonances and their decays to top-quark top-antiquark ($t\bar{t}$) pairs at the Large Hadron Collider (LHC) at next-to-leading order (NLO) in the strong coupling of quantum…

High Energy Physics - Phenomenology · Physics 2016-03-02 W. Bernreuther , P. Galler , C. Mellein , Z. -G. Si , P. Uwer

The leading-order process for the production of a Z boson and a heavy-quark jet at hadron colliders is gQ -> ZQ (Q=c,b). We calculate this cross section at next-to-leading order at the Tevatron and the LHC, and compare it with other sources…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Campbell , R. K. Ellis , F. Maltoni , S. Willenbrock

We study the pair production of doubly charged Higgs bosons at the Large Hadron Collider (LHC), assuming the doubly charged Higgs to be part of an SU(2)_L triplet which generates Majorana masses for left-handed neutrinos. Such…

High Energy Physics - Phenomenology · Physics 2008-11-26 Tao Han , Biswarup Mukhopadhyaya , Zongguo Si , Kai Wang

We perform an update of the next-to-leading order calculation of the rate for Higgs boson production in association with two jets. Our new calculation incorporates the full analytic result for the one-loop virtual amplitude. This new…

High Energy Physics - Phenomenology · Physics 2014-11-20 John M. Campbell , R. Keith Ellis , Ciaran Williams

We present the inclusive cross section at next-to-next-to-next-to-leading order (N$^3$LO) in perturbative QCD for the production of a Higgs boson via bottom-quark fusion. We employ the five-flavour scheme, treating the bottom quark as a…

High Energy Physics - Phenomenology · Physics 2020-11-17 Claude Duhr , Falko Dulat , Bernhard Mistlberger

The idea of fermion mass generation through Yukawa couplings between Higgs bosons and fermions may be tested by their associated production at future linear colliders (LC). We study the production mechanism in the minimal supersymmeric…

High Energy Physics - Phenomenology · Physics 2009-10-31 Jun-Yu Guo , Yi Liao , Yu-Ping Kuang

The first computation of Higgs production in association with three jets at NLO in QCD has recently been performed using the effective theory, where the top quark is treated as an infinitely heavy particle and integrated out. This approach…

High Energy Physics - Phenomenology · Physics 2017-03-08 Nicolas Greiner , Stefan Hoeche , Gionata Luisoni , Marek Schonherr , Jan-Christopher Winter

Left-Right twin Higgs(LRTH) model predicts the existence of a pair of charged Higgs $\phi^{\pm}$. In this paper, we study the production of the charged Higgs bosons pair $\phi^{\pm}$ via the process $e^{+}e^{-}\to \phi^{+}\phi^{-}$ at the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yao-Bei Liu , Hong-Mei Han , Xue-Lei Wang

The searches for the production of the Higgs boson associated with a pair of top quarks in the ATLAS and CMS experiments are presented. The searches use a range of final states sensitive to the Higgs boson decaying into b-quark pairs, pairs…

High Energy Physics - Experiment · Physics 2014-12-16 Mark Owen

We study the Higgs pair production process at a muon collider using b-pair decays of the Higgs bosons. Efficient identification and good measurement resolution for the b-jet pair invariant mass are crucial for unearthing the di-Higgs…

High Energy Physics - Experiment · Physics 2023-08-09 K. Black , T. Bose , S. Dasu , H. Jia , S. Lomte , V. Sharma , C. Vuosalo , I. Ojalvo , T. Holmes , L. Lee , M. Swiatlowski , M. Valente , J. Oliver

As one category of vector boson fusion, photo-production is one important production mechanism at $e$-$p$ colliders. A future $e$-$p$ collider -- Large Hadron-electron Collider (LHeC) has been discussed as a "Higgs factory" candidate where…

High Energy Physics - Phenomenology · Physics 2020-08-05 Ruibo Li , Xiang Lv , Bo-Wen Wang , Kai Wang , Tao Xu

A fully differential calculation of the next-to-leading order QCD corrections to the production of Z-boson pairs in association with a hard jet at the Tevatron and LHC is presented. This process is an important background for Higgs particle…

High Energy Physics - Phenomenology · Physics 2014-11-20 T. Binoth , T. Gleisberg , S. Karg , N. Kauer , G. Sanguinetti

We compute the next-to-next-to-leading order QCD corrections to Higgs boson production in weak boson fusion followed by its decay to a $b\bar b$ pair or to a pair of leptonically-decaying $W$ bosons. Our calculation allows us to compute…

High Energy Physics - Phenomenology · Physics 2022-02-23 Konstantin Asteriadis , Fabrizio Caola , Kirill Melnikov , Raoul Röntsch

We compute the complete next-to-leading order SUSY-QCD corrections for the associated production of a charged Higgs boson with a top quark via bottom-gluon fusion. We investigate the applicability of the bottom parton description in detail.…

High Energy Physics - Phenomenology · Physics 2009-07-09 Tilman Plehn

We report on the calculation of the next-to-leading order QCD corrections to the production of W-boson pairs in association with a hard jet at the Tevatron and the LHC, which is an important source of background for Higgs and new-physics…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Dittmaier , S. Kallweit , P. Uwer

Measurements of single Higgs production and its decays are in good agreement with the Standard Model. There is still room for large modifications in double Higgs production at LHC, though these effects may be correlated with large…

High Energy Physics - Phenomenology · Physics 2021-09-15 Leandro Da Rold , Manuel Epele , Anibal Medina , Nicolás I. Mileo , Alejandro Szynkman

A search for the Higgs boson produced in association with a W or Z boson and decaying to bottom quarks is presented. A sample of approximately 24/fb of data recorded by the CMS experiment at the Large Hadron Collider, operating at…

High Energy Physics - Experiment · Physics 2019-08-13 Michael Mooney

The Higgs boson pair production via gluon fusion at high-energy hadron colliders, such as the LHC, is vital in deciphering the Higgs potential and in pinning down the electroweak symmetry breaking mechanism. We carry out the…

High Energy Physics - Phenomenology · Physics 2020-03-16 Long-Bin Chen , Hai Tao Li , Hua-Sheng Shao , Jian Wang

Following arXiv:1506.00612, an effective field theory approach has been introduced for two additional real scalars, $H$ and $\chi$, to study the associated Higgs boson ($h$) production with top quarks at the Large Hadron Collider with…

High Energy Physics - Phenomenology · Physics 2017-03-02 Skhathisomusa Mthembu , Mukesh Kumar