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Although individual observational groups vigorously test their data sets for systematic errors, the pre-WMAP CMB observational data set has not yet been collectively tested. Under the assumption that the concordance model is the correct…

天体物理学 · 物理学 2015-06-24 Charles H. Lineweaver , Louise M. Griffiths

The CDF and D0 collaborations have analyzed up to ~200/pb of Run 2 physics data to measure W production properties such as the W cross section, the W width, lepton universality and the W charge asymmetry. From the cross section…

高能物理 - 实验 · 物理学 2019-08-15 Oliver Stelzer-Chilton

We combine results from searches by the CDF and D0 Collaborations for a standard model Higgs boson (H) in the processes gg->H->W+W- and gg->H->ZZ in p-pbar collisions at the Fermilab Tevatron Collider at sqrt(s)=1.96 TeV. With 8.2 fb-1 of…

We use $N$-body simulations to measure mass functions in flat cosmological models with quintessence characterized by constant $w$ with $w=-1$, -2/3 and -1/2. The results are compared to the predictions of the formula proposed by Jenkins et…

天体物理学 · 物理学 2007-05-23 Ewa L. Lokas , Paul Bode , Yehuda Hoffman

We summarize and combine the results on the direct measurements of the mass of the W boson in data collected by the Tevatron experiments CDF and D0 at Fermilab. Results from CDF Run-0 (1988-1889) and Run-I (1992-1995) have been combined…

高能物理 - 实验 · 物理学 2012-08-27 The Tevatron Electroweak Working Group

We present a measurement of the W boson mass in proton-antiproton collisions at \sqrt{s} = 1.8 TeV based on a data sample of 82 pb^-1 integrated luminosity collected by the D0 detector at the Fermilab Tevatron. We utilize e \nu events in…

高能物理 - 实验 · 物理学 2009-09-25 The D0 Collaboration , V. M. Abazov

We measure the top quark mass in top-antitop events using up to 3.6 /fb of proton-antiproton collisions at sqrt{s}=2 TeV. New results are described for matrix element methods with single lepton and dilepton channels, and template methods…

高能物理 - 实验 · 物理学 2019-08-14 R. L. Kehoe

We consider a type I or type X two Higgs doublets model with a modified lepton sector. The generalized lepton sector is also flavor conserving but with the new Yukawa couplings completely decoupled from lepton mass proportionality. The…

高能物理 - 唯象学 · 物理学 2023-02-08 Francisco J. Botella , Fernando Cornet-Gomez , Carlos Miró , Miguel Nebot

Measurements of the $W$ boson mass are planned by the ATLAS and CMS experiments, but for the time being, these may be unable to compete with the current world average precision of 15~MeV, due to uncertainties in the PDFs. We discuss the…

高能物理 - 实验 · 物理学 2016-01-27 Giuseppe Bozzi , Luca Citelli , Mika Vesterinen , Alessandro Vicini

We report searches for standard model (SM) Higgs production decaying to WW(*) and continuum ZZ production in the two charged lepton and two neutrino final states. The data were collected with the CDF II detector at the Fermilab Tevatron and…

高能物理 - 实验 · 物理学 2019-08-13 Shih-Chieh Hsu

The precision measurement of the W boson mass is an important milestone for the LHC physics program in the coming years. An accurate measurement of $M_W$ allows to perform stringent consistency tests of the Standard Model by means of global…

高能物理 - 唯象学 · 物理学 2013-09-06 Juan Rojo , Alessandro Vicini

We investigate the posibility of improving the W mass measurement at ATLAS. Given the high statistics of both W and Z bosons expected at the LHC, we estimate that a precision of 7 MeV per channel can be reached with 10 fb-1 of data.

高能物理 - 实验 · 物理学 2008-10-21 Troels C. Petersen

The FCC-ee physics program will deliver two complementary top-notch precision determinations of the W boson mass, and width. The first and main measurement relies on the rapid rise of the W-pair production cross section near its kinematic…

高能物理 - 实验 · 物理学 2021-12-06 Paolo Azzurri

Following a discussion on $W$-boson mass observed at the CDF and ATLAS, we explore the parameter space allowed in the 2HDM+$S$ model. Further, the model parameter space is constrained through vector-like leptons via muon $g-2$ measurements.…

高能物理 - 唯象学 · 物理学 2023-12-15 Anza-Tshilidzi Mulaudzi , Mukesh Kumar , Ashok Goyal , Bruce Mellado

Updated Standard Model Higgs boson search results from the Tevatron experiments are presented. We focus on the updated CDF MET+bb result, where a significant shift in observed limits is explained. For the Tevatron combinations, upper limits…

高能物理 - 实验 · 物理学 2022-03-02 Kyle J. Knoepfel

Precise determinations of the masses of the $W$ boson and of the top quark could stringently test the radiative structure of the Standard Model (SM) or provide evidence for new physics. We analyze the excellent prospects at a muon collider…

高能物理 - 唯象学 · 物理学 2009-10-30 M. S. Berger

An overview of recent results on electroweak precision measurements from the CMS Collaboration is presented. Studies of the weak boson differential transverse momentum spectra, Z boson angular coefficients, forward-backward asymmetry of…

高能物理 - 实验 · 物理学 2017-09-01 Milos Dordevic

Results of an updated global electoweak fit to the Standard Model (SM) are presented, where special attention is paid to some key observables, such as the weak mixing angle, the $W$ boson mass, and the anomalous magnetic moment of the muon.…

高能物理 - 唯象学 · 物理学 2017-10-19 Jens Erler

We explore the extent to which future precision measurements of the Standard Model (SM) observables at the proposed $Z$-factories and Higgs factories may have impacts on new physics beyond the Standard Model, as illustrated by studying the…

高能物理 - 唯象学 · 物理学 2020-11-20 Ning Chen , Tao Han , Shuailong Li , Shufang Su , Wei Su , Yongcheng Wu

Recent 7 TeV 5/fb measurements by ATLAS and CMS have measured both overall and differential WW cross sections that differ from NLO SM predictions. While these measurements aren't statistically significant enough to rule out the SM, we…

高能物理 - 唯象学 · 物理学 2013-05-30 David Curtin , Prerit Jaiswal , Patrick Meade