Richard Ruiz
Durham University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Richard Ruiz.
arXiv: High Energy Physics - Phenomenology | 2016
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
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
Tao Han; Ian M. Lewis; Richard Ruiz; Zong-Guo Si
Physical Review D | 2016
Manimala Mitra; Richard Ruiz; Darren J. Scott; Michael Spannowsky
q{\overline{q}}^{\prime }
Frontiers of Physics in China | 2018
Yi Cai; Tao Han; Tong Li; Richard Ruiz
Physical Review D | 2016
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
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
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
Tao Han; Richard Ruiz
{W}_{R}
Physics Letters B | 2018
Silvia Pascoli; Richard Ruiz; Cedric Weiland
\char22{}an inherent ingredient of left-right symmetric models (LRSM). We focus on the regime where the