2014/10/07 by Tao Liu, Hao Zhang, Liu, Tao +1
Physics and Astronomy · Computer Science · #Particle physics theoretical and experimental studies #Distributed and Parallel Computing Systems #Computational Physics and Python Applications
paper · pdf · doi:10.48550/arxiv.1410.1855
The measurement of di-Higgs physics can provide crucial information on electroweak phase transition in the early Universe and significant clues on new physics coupling with the Higgs field directly. This measurement has been suggested to be pursued mainly via the pp → hh production. In this letter, we propose a new strategy to do that, i.e., via the pp → t t hh production. Because of its positive correlation with the rescaled tri-Higgs coupling \fracλλ\rm SM (in comparison to a negative one for the pp → hh production) in the neighborhood of \fracλλ\rm SM ∼ 1, the pp → t t hh production complements the pp → hh one in measuring di-Higgs physics, particularly for \fracλλ\rm SM>1, at both the High Luminosity LHC (HL-LHC) and a next-generation pp-collider. As an illustration, we work on the process pp→ t thh → t t b b b b. We show that a statistical significance of > 2.0 σ at the HL-LHC, comparable to that of the pp → hh → b b γγ channel, and a statistical significance of ∼ 5 σ at a 100 TeV pp-collider, with 3000 fb-1 of data, are achievable in searching for the di-Higgs production with \fracλλ\rm SM = 1.