Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Murphy, Christopher W."'
Autor:
Murphy, Christopher W.
Lorentz invariant quantum field theories (QFTs) in four spacetime dimensions (4D) have a $\mathbb{Z}_4$ symmetry provided there exists a basis of operators in the QFT where all operators have even operator dimension, $d$, including those with $d > 4$
Externí odkaz:
http://arxiv.org/abs/2402.02195
Autor:
Alioli, Simone, Boughezal, Radja, Cao, Weiguang, Chala, Mikael, Díaz-Carmona, Álvaro, Bakshi, Supratim Das, Durieux, Gauthier, Gráf, Lukáš, Guedes, Guilherme, Henning, Brian Quinn, Kitahara, Teppei, Li, Hao-Lin, Lu, Xiaochuan, Machado, Camila S., Martin, Adam, Melia, Tom, Mereghetti, Emanuele, Murayama, Hitoshi, Murphy, Christopher W., Nepveu, Jasper Roosmale, Pal, Sridip, Petriello, Frank, Shadmi, Yael, Shu, Jing, Weiss, Yaniv, Xiao, Ming-Lei, Yu, Jiang-Hao
In this contribution to the Snowmass 2021 process we review theoretical developments in the Standard Model Effective Field Theory (SMEFT) with a focus on effects at the dimension-8 level and beyond. We review the theoretical advances that led to the
Externí odkaz:
http://arxiv.org/abs/2203.06771
Autor:
Murphy, Christopher W.
We construct a complete basis of dimension-8 operators in the Low-Energy Effective Field Theory below the Electroweak Scale (LEFT). We find there are 35058 dimension-8 operators in the LEFT for two generations of up-type quarks and three generations
Externí odkaz:
http://arxiv.org/abs/2012.13291
Autor:
Murphy, Christopher W.
We present a complete basis of dimension-8 operators in the Standard Model Effective Field Theory. Attention is paid to operators that vanish in the absence of flavor structure. There are dimension-8 SMEFT 44,807 operators. We also briefly discuss a
Externí odkaz:
http://arxiv.org/abs/2005.00059
Publikováno v:
Phys. Rev. D 100, 055039 (2019)
Measurements from the Gaia satellite have greatly increased our knowledge of the dark matter velocity distributions in the Solar neighborhood. There is evidence for multiple cold structures nearby, including a high-velocity stream counterrotating rel
Externí odkaz:
http://arxiv.org/abs/1905.05189
Autor:
Murphy, Christopher W.
A common problem in a high energy physics experiment is extracting a signal from a much larger background. Posed as a classification task, there is said to be an imbalance in the number of samples belonging to the signal class versus the number of sa
Externí odkaz:
http://arxiv.org/abs/1905.00339
Autor:
Murphy, Christopher W., Soni, Amarjit
Publikováno v:
Phys. Rev. D 98, 094026 (2018)
We derive model-independent bounds on the form factors for the decay $B_c^+ \to \eta_c\, \ell^+\, \nu$ including full mass effects, i.e. $\ell = e,\, \mu, \text{ and } \tau$. The bounds are obtained by using the BGL parameterization for the form fact
Externí odkaz:
http://arxiv.org/abs/1808.05932
We study theoretical constraints on a model whose scalar sector contains one color octet and one or two color singlet $SU(2)_L$ doublets. Using the unitarity of the theory, we constrain the parameters of the scalar potential for the first time at nex
Externí odkaz:
http://arxiv.org/abs/1808.05824
The ATLAS and CMS collaborations have recently released significant new data on Higgs and diboson production in LHC Run 2. Measurements of Higgs properties have improved in many channels, while kinematic information for $h \to \gamma\gamma$ and $h \t
Externí odkaz:
http://arxiv.org/abs/1803.03252
Autor:
Murphy, Christopher W.
Publikováno v:
Phys. Rev. D 97, 015007 (2018)
We perform a parameter fit in the Standard Model Effective Field Theory (SMEFT) with an emphasis on using regularized linear regression to tackle the issue of the large number of parameters in the SMEFT. In regularized linear regression a positive de
Externí odkaz:
http://arxiv.org/abs/1710.02008