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We recently developed an Effective Field Theory (EFT) for rotational bands in odd-mass nuclei. Here we use EFT expressions to perform a Bayesian analysis of data on the rotational energy levels of $^{99}$Tc, ${}^{155,157}$Gd, ${}^{159}$Dy,…

核理论 · 物理学 2022-03-07 I. K. Alnamlah , E. A. Coello Pérez , D. R. Phillips

There is no indication so far on the spin of dark matter particles. We consider the possibility in this work that a spin-3/2 particle acts as dark matter. Employing the approach of effective field theory, we list all possible 4-fermion…

高能物理 - 唯象学 · 物理学 2015-06-03 Ran Ding , Yi Liao

We explore a singlet Majorana fermion dark matter candidate using an effective field theory (EFT) framework, respecting the relations imposed by the standard model $SU(3)_C \times SU(2)_L \times U(1)_Y$ gauge invariance among different…

高能物理 - 唯象学 · 物理学 2014-10-31 Shigeki Matsumoto , Satyanarayan Mukhopadhyay , Yue-Lin Sming Tsai

The Standard Model Effective Field Theory (SMEFT) provides a robust framework to interpret experimental measurements in the context of new physics scenarios while minimising assumptions on the nature of the underlying UV-complete theory. We…

高能物理 - 唯象学 · 物理学 2024-04-25 Tommaso Giani , Giacomo Magni , Juan Rojo

Weakly Interacting Massive Particles (WIMPs) are candidates for non-baryonic Dark Matter. WIMPs are supposed to interact with baryonic matter via scattering off nuclei producing a nuclear recoil with energies up to a few 10 keV with a very…

Effective field theory (EFT) approaches are widely used at the LHC, such that it is important to study their validity, and ease of matching to specific new physics models. In this paper, we consider an extension of the SM in which a top…

高能物理 - 唯象学 · 物理学 2020-03-04 Christoph Englert , Peter Galler , Chris D. White

The report describes the research program on the development of ultra-low-energy germanium detectors, with emphasis on WIMP dark matter searches. A threshold of 100 eV is achieved with a 20 g detector array, providing a unique probe to the…

高能物理 - 实验 · 物理学 2008-11-26 H. T. Wong

We report on the analysis of the low-energy electron-recoil spectrum from the CDMS II experiment using data with an exposure of 443.2 kg-days. The analysis provides details on the observed counting rate and possible background sources in…

I will show, via effective field theory (EFT) techniques, that obtaining an observationally consistent relic density while evading stringent direct detection limits and maintaining $h_{125}$ phenomenology in an extended Higgs sector can be…

高能物理 - 唯象学 · 物理学 2018-12-31 Nausheen R. Shah

Guided by non-relativistic Effective Field Theory (EFT) we classify the most general spin-dependent interactions between a fermionic Weakly Interacting Massive Particle (WIMP) and nuclei, and within this class of models we discuss the…

宇宙学与河外天体物理 · 物理学 2015-08-06 Stefano Scopel , Jong-Hyun Yoon , KookHyun Yoon

The EDELWEISS II experiment is devoted to the search for Weakly Interacting Massive Particles (WIMP) that would constitute the Dark Matter halo of our Galaxy. For this purpose, the experiment uses cryogenic germanium detectors, cooled down…

宇宙学与河外天体物理 · 物理学 2014-11-20 Veronique Sanglard

We perform a detailed study of an effective field theory which includes the Standard Model particle content extended by a pair of Weyl fermionic SU(2)-doublets with opposite hypercharges. A discrete symmetry guarantees that a linear…

高能物理 - 唯象学 · 物理学 2016-11-29 Athanasios Dedes , Dimitrios Karamitros , Vassilis C. Spanos

We study a low-energy effective field theory (EFT) describing the NN system in which all exchanged particles are integrated out. We show that fitting the residue of the 3S1 amplitude at the deuteron pole, rather than the 3S1 effective…

核理论 · 物理学 2014-11-18 Daniel R. Phillips , Gautam Rupak , Martin J. Savage

Large scale structure surveys promise to be the next leading probe of cosmological information. It is therefore crucial to reliably predict their observables. The Effective Field Theory of Large Scale Structures (EFTofLSS) provides a…

宇宙学与河外天体物理 · 物理学 2015-06-17 John Joseph M. Carrasco , Simon Foreman , Daniel Green , Leonardo Senatore

Signs of new physics are probed in the context of an Effective Field Theory using events containing one or more top quarks in association with additional leptons. Data consisting of proton-proton collisions at a center-of-mass energy of…

高能物理 - 实验 · 物理学 2021-01-27 Brent R. Yates

The Cryogenic Dark Matter Search (CDMS) and XENON experiments aim to directly detect dark matter in the form of weakly interacting massive particles (WIMPs) via their elastic scattering on the target nuclei. The experiments use different…

天体物理学 · 物理学 2008-11-26 Kaixuan Ni , Laura Baudis

I calculate the rate of WIMP capture and annihilation in the Earth in the non-relativistic effective theory of dark matter-nucleon interactions. Neglecting operator interference, I consider all Galilean invariant interaction operators that…

宇宙学与河外天体物理 · 物理学 2017-02-08 Riccardo Catena

We develop a \pi-electron effective field theory (\pi-EFT) wherein the two-body Hamiltonian for a \pi-electron system is expressed in terms of three effective parameters: the \pi-orbital quadrupole moment, the on-site repulsion, and a…

介观与纳米尺度物理 · 物理学 2015-03-19 Joshua D. Barr , Justin P. Bergfield , Charles A. Stafford

The consistency of the EFT of two interacting spin-2 fields is checked by applying forward limit positivity bounds on the scattering amplitudes to exclude the region of parameter space devoid of a standard UV completion. We focus on two…

高能物理 - 理论 · 物理学 2020-04-22 Lasma Alberte , Claudia de Rham , Arshia Momeni , Justinas Rumbutis , Andrew J. Tolley