168 citations · 1.1k across the 42 of their papers we have counts for
26 papers · 1 filter
Accommodating the CDF W-boson Mass Measurement in the Beautiful Mirror Model
Shengdu Chai, Jiayin Gu, Lian-Tao Wang
The W-boson mass measurement recently reported by the CDF II experiment exhibits a significant deviation from both the Standard Model prediction and previous measurements. There is…
Report of the Topical Group on Electroweak Precision Physics and Constraining New Physics for Snowmass 2021
Alberto Belloni, Ayres Freitas, Junping Tian +65
The precise measurement of physics observables and the test of their consistency within the standard model (SM) are an invaluable approach, complemented by direct searches for new…
Global SMEFT Fits at Future Colliders
Jorge de Blas, Yong Du, Christophe Grojean +6
Based on the framework of Standard Model Effective Field Theory, we performed a few global fits, each containing a subset of dimension-6 operators, for the measurements that are ex…
Probing Top-quark Operators with Precision Electroweak Measurements
Yiming Liu, Yuhao Wang, Cen Zhang +2
In the Standard Model Effective Field Theory (SMEFT), operators involving the top quark are generally difficult to probe, and can generate sizable loop contributions to the electro…
Speculations on the W-Mass Measurement at CDF
Jiayin Gu, Zhen Liu, Teng Ma +1
The W Mass determination at the Tevatron CDF experiment reported a deviation from the SM expectation at 7 level. We discuss a few possible interpretations and their collider imp…
The Physics potential of the CEPC. Prepared for the US Snowmass Community Planning Exercise (Snowmass 2021)
Huajie Cheng, Wen Han Chiu, Yaquan Fang +20
The Circular Electron Positron Collider (CEPC) is a large-scale collider facility that can serve as a factory of the Higgs, Z, and W bosons and is upgradable to run at the ttbar th…
Higgs Precision at a 125 GeV Muon Collider
Jorge de Blas, Jiayin Gu, Zhen Liu
The -channel resonant production of the Higgs boson at a 125 GeV muon collider enables a unique way to determine the Higgs properties. However, a clear picture of the achievable…
The physics case of a 3 TeV muon collider stage
Jorge De Blas, Dario Buttazzo, Rodolfo Capdevilla +131
In the path towards a muon collider with center of mass energy of 10 TeV or more, a stage at 3 TeV emerges as an appealing option. Reviewing the physics potential of such muon coll…
Muon Collider Physics Summary
Chiara Aimè, Aram Apyan, Mohammed Attia Mahmoud +122
The perspective of designing muon colliders with high energy and luminosity, which is being investigated by the International Muon Collider Collaboration, has triggered a growing i…
Unambiguously Testing Positivity at Lepton Colliders
Jiayin Gu, Lian-Tao Wang, Cen Zhang
The diphoton channel at lepton colliders, , has a remarkable feature that the leading new physics contribution comes only from dimension-eight operators. Th…
Sum Rules in the Standard Model Effective Field Theory from Helicity Amplitudes
Jiayin Gu, Lian-Tao Wang
The dispersion relation of an elastic 4-point amplitude in the forward direction leads to a sum rule that connects the low energy amplitude to the high energy observables. We perfo…
On the future of Higgs, electroweak and diboson measurements at lepton colliders
Jorge de Blas, Gauthier Durieux, Christophe Grojean +2
LEP precision on electroweak measurements was sufficient not to hamper the extraction of Higgs couplings at the LHC. But the foreseen permille-level Higgs measurements at future le…
Probing top-quark couplings indirectly at Higgs factories
Gauthier Durieux, Jiayin Gu, Eleni Vryonidou +1
We perform a global effective-field-theory analysis to assess the combined precision on Higgs couplings, triple gauge-boson couplings, and top-quark couplings, at future circular $…
New physics implication of Higgs precision measurements
Ning Chen, Jiayin Gu, Tao Han +7
Studying the properties of the Higgs boson can be an important window to explore the physics beyond the Standard Model (SM). In this work, we present studies on the implications of…
A global view on the Higgs self-coupling at lepton colliders
Stefano Di Vita, Gauthier Durieux, Christophe Grojean +5
We perform a global effective-field-theory analysis to assess the precision on the determination of the Higgs trilinear self-coupling at future lepton colliders. Two main scenarios…
Optimizing Higgs factories by modifying the recoil mass
Jiayin Gu, Ying-Ying Li
It is difficult to measure the -fusion Higgs production process () at a lepton collider with a center of mass energy of 240-250 GeV due to its small rate a…
Learning from Higgs Physics at Future Higgs Factories
Jiayin Gu, Honglei Li, Zhen Liu +2
Future Higgs factories can reach impressive precision on Higgs property measurements. In this paper, instead of conventional focus of Higgs precision in certain interaction bases,…
The leptonic future of the Higgs
Gauthier Durieux, Christophe Grojean, Jiayin Gu +1
Precision study of electroweak symmetry breaking strongly motivates the construction of a lepton collider with center-of-mass energy of at least 240 GeV. Besides Higgsstrahlung ($e…
Exploring the nearly degenerate stop region with sbottom decays
Haipeng An, Jiayin Gu, Lian-Tao Wang
A light stop with mass almost degenerate with the lightest neutralino has important connections with both naturalness and dark matter relic abundance. This region is also very hard…
Beyond Higgs Couplings: Probing the Higgs with Angular Observables at Future Colliders
Nathaniel Craig, Jiayin Gu, Zhen Liu +1
We study angular observables in the channel at future circular colliders such as CEPC and FCC-ee. Taking into account the impac…
The Zbb Couplings at Future e+e- Colliders
Stefania Gori, Jiayin Gu, Lian-Tao Wang
Many new physics models predict sizable modifications to the SM Zbb couplings, while the corresponding measurements at LEP and SLC exhibit some discrepancy with the SM predictions.…
Top Seesaw with a Custodial Symmetry, and the 126 GeV Higgs
Hsin-Chia Cheng, Jiayin Gu
The composite Higgs models based on the top seesaw mechanism commonly possess an enhanced approximate chiral symmetry, which is spontaneously broken to produce the Higgs field as t…
Higgs mass from compositeness at a multi-TeV scale
Hsin-Chia Cheng, Bogdan A. Dobrescu, Jiayin Gu
Within composite Higgs models based on the top seesaw mechanism, we show that the Higgs field can arise as the pseudo Nambu-Goldstone boson of the broken U(3)_L chiral symmetry ass…
A Toolkit of the Stop Search via the Chargino Decay
Yang Bai, Hsin-Chia Cheng, Jason Gallicchio +1
The top squark (stop) may dominantly decay to a bottom quark and a chargino if the mass difference between the stop and the lightest neutralino is comparable or less than the top q…