Results 71 to 80 of about 48,672 (174)

Top quark pair production near threshold: single/double distributions and mass determination

Journal of High Energy Physics, 2020
We investigate top quark pair production near the threshold where the pair invariant mass M t t ¯ $$ {M}_{t\overline{t}} $$ approaches 2m t , which provides sensitive observables to extract the top quark mass m t .
Wan-Li Ju, Guoxing Wang, Xing Wang, Xiaofeng Xu, Yongqi Xu, Li Lin Yang   +5 more
doaj   +1 more source

Numerator seagull and extended Symmetries of Feynman Integrals

Journal of High Energy Physics, 2021
The Symmetries of Feynman Integrals (SFI) method is extended for the first time to incorporate an irreducible numerator. This is done in the context of the so-called vacuum and propagator seagull diagrams, which have 3 and 2 loops, respectively, and both
Barak Kol, Amit Schiller, Ruth Shir
doaj   +1 more source

Fermion and scalar phenomenology of a 2-Higgs doublet model with $S_3$

, 2016
We propose a 2-Higgs doublet model where the symmetry is extended by $S_{3}\otimes Z_{3}\otimes Z_{3}^{\prime }\otimes Z_{14}$ and the field content is enlarged by extra $SU(2)_{L}$ singlet scalar fields.
Hernández, A. E. Cárcamo, Schumacher, E., Varzielas, I. de Medeiros   +2 more
core   +1 more source

Model-Independent Searches for New Quarks at the LHC [PDF]

, 2011
New vector-like quarks can have sizable couplings to first generation quarks without conflicting with current experimental constraints. The coupling with valence quarks and unique kinematics make single production the optimal discovery process.
A Atre, Anupama Atre, B Holdom, DE Morrissey, Erkcan Ozcan, F Aguila del, F Aguila del, F Aguila del, F Aguila del, F Aguila del, F Aguila del, F Aguila del, F Aguila del, F Gursey, F Gursey, G Cacciapaglia, G Cacciapaglia, G Dissertori, GD Kribs, Georges Azuelos, Gokhan Unel, H Martinez, I Gogoladze, J Alwall, J Alwall, J Alwall, J Erler, J Mrazek, J Pumplin, JA Aguilar-Saavedra, José Santiago, K Agashe, K Kumar, M Carena, M Carena, Marcela Carena, ME Albrecht, ME Peskin, MS Carena, MS Carena, O Eberhardt, PH Frampton, R Contino, R Contino, R Mehdiyev, S Casagrande, S Sultansoy, T Aaltonen, T Figy, T Han, T Sjöstrand, Tao Han, VM Abazov, Z Han, Z Han   +54 more
core   +2 more sources

Exercise ventilatory efficiency in elite athletes assessed for the Paris 2024 Olympic Games: The effect of sex and sport categories

Physiological Reports, Volume 13, Issue 7, April 2025.
This graphical abstract illustrates the role of ventilatory efficiency (V'E/V'CO2) in elite athletes, analyzed by sex and sport category. Abstract Ventilatory efficiency during cardiopulmonary exercise testing (CPET) is obtained by relating minute ventilation (V'E) to CO2 output (V'CO2).
Maria Rosaria Squeo, Ilaria Menichini, Matteo Morviducci, Alessandro Spinelli, Giuseppe Di Gioia, Viviana Maestrini, J. Alberto Neder, Paolo Palange   +7 more
wiley   +1 more source

Confronting SUSY SO(10) with updated Lattice and Neutrino data

Journal of High Energy Physics, 2019
We present an updated fit of supersymmetric SO(10) models to quark and lepton masses and mixing parameters. Including latest results from lattice QCD determinations of quark masses and neutrino oscillation data, we show that fits neglecting ...
Thomas Deppisch, Stefan Schacht, Martin Spinrath   +2 more
doaj   +1 more source

On the interference of ggH and c ¯ cH $$ \overline{\mathrm{c}}\mathrm{cH} $$ Higgs production mechanisms and the determination of charm Yukawa coupling at the LHC

Journal of High Energy Physics, 2021
Higgs boson production in association with a charm-quark jet proceeds through two different mechanisms — one that involves the charm Yukawa coupling and the other that involves direct Higgs coupling to gluons.
Wojciech Bizoń, Kirill Melnikov, Jérémie Quarroz   +2 more
doaj   +1 more source

Updated Values of Running Quark and Lepton Masses

, 2008
Reliable values of quark and lepton masses are important for model building at a fundamental energy scale, such as the Fermi scale M_Z \approx 91.2 GeV and the would-be GUT scale \Lambda_GUT \sim 2 \times 10^16 GeV.
A. Salam, G. ’t Hooft, He Zhang, M. Gell-Mann, S. L. Glashow, Shun Zhou, T. Yanagida, Z. Z. Xing, Zhi-zhong Xing   +8 more
core   +1 more source

Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge, Elena Bratkovskaya, Taesoo Song, Laura Sagunski   +3 more
wiley   +1 more source

On the evaluation of two-loop electroweak box diagrams for e + e − → HZ production

Journal of High Energy Physics, 2021
Precision studies of the Higgs boson at future e + e − colliders can help to shed light on fundamental questions related to electroweak symmetry breaking, baryogenesis, the hierarchy problem, and dark matter.
Qian Song, Ayres Freitas
doaj   +1 more source