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Featured researches published by Richard Ruiz.


arXiv: High Energy Physics - Phenomenology | 2016

Physics at a 100 TeV pp collider: Standard Model processes

M. Mangano; M. Chiesa; F. Febres Cordero; M. Selvaggi; Radja Boughezal; Barbara Jäger; H. Martinez; A. Shivaji; Stefano Carrazza; G. Montagna; Frank Petriello; A. Vicini; S. Kallweit; F. Piccinini; Giulia Zanderighi; M.V. Garzelli; S. Boselli; Fabrizio Caola; T. Pierog; E. Re; Philipp Maierhöfer; C. Bauer; C. M. Carloni Calame; P. Torrielli; L. Salfelder; P. Ferrarese; H. Ita; Marek Schönherr; X. Garcia i Tormo; Andrzej Siodmok

This chapter documents the production rates and typical distributions for a number of benchmark Standard Model processes, and discusses new dynamical phenomena arising at the highest energies available at this collider. We discuss the intrinsic physics interest in the measurement of these Standard Model processes, as well as their role as backgrounds for New Physics searches.This chapter documents the production rates and typical distributions for a number of benchmark Standard Model processes, and discusses new dynamical phenomena arising at the highest energies available at this collider. We discuss the intrinsic physics interest in the measurement of these Standard Model processes, as well as their role as backgrounds for New Physics searches.This chapter documents the production rates and typical distributions for a number of benchmark Standard Model processes, and discusses new dynamical phenomena arising at the highest energies available at this collider. We discuss the intrinsic physics interest in the measurement of these Standard Model processes, as well as their role as backgrounds for New Physics searches.


Journal of High Energy Physics | 2015

Heavy Majorana neutrinos from Wγ fusion at hadron colliders

Daniel Alva; Tao Han; Richard Ruiz

A bstractVector boson fusion processes become increasingly more important at higher collider energies and for probing larger mass scales due to collinear logarithmic enhancements of the cross section. In this context, we revisit the production of a hypothetic heavy Majorana neutrino (N) at hadron colliders. Particular attention is paid to the fusion process Wγ → Nℓ±. We systematically categorize the contributions from a photon initial state in the elastic, inelastic, and deeply inelastic channels. Comparing with the leading channel via the Drell-Yan production qq¯′


Physical Review D | 2013

Lepton number violation and W ′ chiral couplings at the LHC

Tao Han; Ian M. Lewis; Richard Ruiz; Zong-Guo Si


Physical Review D | 2016

Neutrino jets from high-mass WR gauge bosons in TeV-scale left-right symmetric models

Manimala Mitra; Richard Ruiz; Darren J. Scott; Michael Spannowsky

q{\overline{q}}^{\prime }


Frontiers of Physics in China | 2018

Lepton-Number Violation: Seesaw Models and Their Collider Tests

Yi Cai; Tao Han; Tong Li; Richard Ruiz


Physical Review D | 2016

Fully-Automated Precision Predictions for Heavy Neutrino Production Mechanisms at Hadron Colliders

Celine Degrande; Richard Ruiz; Jessica Turner; Olivier Mattelaer

→ W*→ Nℓ± at NNLO in QCD, we find that the Wγ fusion process becomes relatively more important at higher scales, surpassing the DY mechanism at mN ∼ 1 TeV (770 GeV), at the 14 TeV LHC (100 TeV VLHC). We investigate the inclusive heavy Majorana neutrino signal, including QCD corrections, and quantify the Standard Model backgrounds at future hadron colliders. We conclude that, with the currently allowed mixing |VμN|2 < 6 × 10−3, a 5σ discovery can be made via the same-sign dimuon channel for mN = 530 (1070) GeV at the 14 TeV LHC (100 TeV VLHC) after 1 ab−1. Reversely, for mN = 500 GeV and the same integrated luminosity, a mixing |VμN|2 of the order 1.1 × 10−3 (2.5 × 10−4) may be probed.


Journal of High Energy Physics | 2015

QCD Corrections to Pair Production of Type III Seesaw Leptons at Hadron Colliders

Richard Ruiz

We study the observability for a heavy Majorana neutrino N along with a new charged gauge boson W′ at the LHC. We emphasize the complementarity of these two particles in their production and decay to unambiguously determine their properties. We show that the Majorana nature of N can be verified by the lepton number violating like-sign dilepton process, and by polar and azimuthal angular distributions. The chirality of the W′ coupling to leptons and to quarks can be determined by a polar angle distribution in the reconstructed frame and an azimuthal angle distribution.


Physical Review D | 2017

Heavy neutrinos from gluon fusion

Richard Ruiz; Michael Spannowsky; Philip Waite

We reexamine the discovery potential at hadron colliders of high-mass right-handed (RH) gauge bosons


Physical Review D | 2014

Higgs Bosons from Top Quark Decays

Tao Han; Richard Ruiz

{W}_{R}


Physics Letters B | 2018

Safe Jet Vetoes

Silvia Pascoli; Richard Ruiz; Cedric Weiland

\char22{}an inherent ingredient of left-right symmetric models (LRSM). We focus on the regime where the

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Tao Han

University of Pittsburgh

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M. Selvaggi

Université catholique de Louvain

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Olivier Mattelaer

Université catholique de Louvain

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Frank Petriello

Argonne National Laboratory

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Radja Boughezal

Argonne National Laboratory

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