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The AlCap experiment is a joint venture between the COMET and Mu2e collaborations that will measure the rate and spectrum of particles emitted after nuclear muon capture on aluminium. Both collaborations will search for the charged lepton…

仪器与探测器 · 物理学 2018-09-27 Andrew Edmonds

The very precise measurement of the anomalous magnetic moment of the muon, recently released by the Muon g-2 experiment at Fermilab, can serve to set stringent constraints on new particles. If the observed 4$\sigma$ discrepancy from the…

高能物理 - 唯象学 · 物理学 2021-12-24 J. C. Criado , A. Djouadi , N. Koivunen , K. Müürsepp , M. Raidal , H. Veermäe

Prospective presentation is given for the experimental program of the KLOE-2 Collaboration, to be performed using the DA$\Phi$NE $e^+e^-$ collider upgraded in luminosity. Data with the total luminosity of 25 fb$^{-1}$ are aimed to be…

高能物理 - 实验 · 物理学 2019-08-14 Wojciech Wislicki

A simple extension of Ma's approach in a scotogenic model is studied for the purpose of simultaneously interpreting the neutrino data and the excess of muon anomalous magnetic moment (muon $g-2$). The feasible minimal extension is to add an…

高能物理 - 唯象学 · 物理学 2019-07-24 Chuan-Hung Chen , Takaaki Nomura

We propose a 3500 ton (3000 ton fiducial volume) SiO_2 neutrino detector with sampling calorimetry, charged particle tracking, and muon spectrometers to run in a Tevatron Fixed Target Program. Improvements to the Fermilab accelerator…

The new measurement of the muon's anomalous magnetic moment released by the Muon g-2 experiment at Fermilab sets strong constraints on the properties of many new particles. Using an effective field theory approach to the interactions of…

高能物理 - 唯象学 · 物理学 2021-07-07 Juan C. Criado , Abdelhak Djouadi , Niko Koivunen , Kristjan Müürsepp , Martti Raidal , Hardi Veermäe

There are two plans of experiments to search for muon to electron ($\mu$-$e$) conversion at J-PARC, which are called DeeMe and COMET. The $\mu$-$e$ conversion is one of the charged lepton flavor violation processes. The processes are…

仪器与探测器 · 物理学 2018-12-05 N. Teshima

$\mu-e$ conversion is the experimentally most interesting lepton flavor violating process. From a theoretical point of view it is an interesting interplay of particle and nuclear physics. The effective transition operator, depending on the…

核理论 · 物理学 2011-07-19 T. S. Kosmas , J. D. Vergados

The study of muon properties and decays played a crucial role in the early years of particle physics and contributed over decades to build and consolidate the Standard Model. At present, searches for muon decays beyond the Standard Model…

高能物理 - 实验 · 物理学 2020-04-15 Francesco Renga

We study the sensitivity of the existing MEG data to lepton flavor violating axion-like particles produced through $\mu^+ \to e^+ a \gamma$ and estimate the discovery potential for the upcoming MEG II experiment in this channel. The MEG II…

高能物理 - 唯象学 · 物理学 2022-10-26 Yongsoo Jho , Simon Knapen , Diego Redigolo

Two next generation muon $g-2$ experiments at Fermilab in the US and at J-PARC in Japan have been designed to reach a four times better precision from 0.54 ppm to 0.14 ppm and the challenge for the theory side is to keep up in precision as…

高能物理 - 唯象学 · 物理学 2018-08-01 Fred Jegerlehner

The observation of charged lepton flavor violation is a clear sign of physics beyond the Standard Model (SM). In this work, we investigate the sensitivity of future lepton colliders to charged lepton flavor violation via on-shell production…

高能物理 - 唯象学 · 物理学 2020-03-05 Tong Li , Michael A. Schmidt

With the long-standing tension between experiment and Standard-Model (SM) prediction in the anomalous magnetic moment of the muon $a_\mu$ recently reaffirmed by the Fermilab experiment, the crucial question becomes which other observables…

高能物理 - 唯象学 · 物理学 2022-09-27 Andreas Crivellin , Martin Hoferichter

Fermilab Booster synchrotron requires an intensity upgrade from 4.5x1012 to 6.5x1012 protons per pulse as a part of Fermilabs Proton Improvement Plan-II (PIP-II). One of the factors which may limit the high-intensity performance is the fast…

加速器物理 · 物理学 2022-08-10 S. A. K. Wijethunga , J. Eldred , C. Y. Tan , E. Pozdeyev

Lepton flavor violation is one of the cleanest probes of physics beyond the standard model. In this work, we explore the sensitivity of the process $e^+ e^- \to \tau \mu$ to new physics above the TeV scale at the proposed circular…

高能物理 - 唯象学 · 物理学 2023-05-09 Wolfgang Altmannshofer , Pankaj Munbodh , Talise Oh

Some recent precision experiments in low energy muon physics are discussed. Spectroscopy on the muonium atom, the bound state of a positve muon and an electron, has provided precise tests of standard theory and yielded most precise values…

核实验 · 物理学 2016-09-08 Klaus P. Jungmann

Experimental searches for lepton-flavor-violating coherent muon-to-electron conversion in the field of a nucleus, have been proposed to reach the unprecedented sensitivity of 10^(-16) - 10^(-18) per stopped muon. At that level, they probe…

高能物理 - 唯象学 · 物理学 2011-08-08 Andrzej Czarnecki , Xavier Garcia i Tormo , William J. Marciano

This work proposes a new yet economical experiment to probe the charged lepton flavor violation (CLFV) process mediated by an extra massive neutron gauge boson $Z^\prime$ beyond the standard model, by extending a recently proposed muon dark…

高能物理 - 实验 · 物理学 2025-11-03 Leyun Gao , Zijian Wang , Cheng-en Liu , Jinning Li , Alim Ruzi , Qite Li , Chen Zhou , Qiang Li

This White Paper briefly reviews the present status of the muon (g-2) Standard-Model prediction. This value results in a 3 - 4 standard-deviation difference with the experimental result from Brookhaven E821. The present experimental…

高能物理 - 唯象学 · 物理学 2013-11-12 Thomas Blum , Achim Denig , Ivan Logashenko , Eduardo de Rafael , B. Lee Roberts , Thomas Teubner , Graziano Venanzoni

The New Muon $(g-2)$ Collaboration at Fermilab has proposed to measure the anomalous magnetic moment of the muon, $a_\mu$, a factor of four better than was done in E821 at the Brookhaven AGS, which obtained $a_\mu = [116 592 089 (63)]…

高能物理 - 实验 · 物理学 2011-01-05 B. Lee Roberts
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