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The top quark pair production cross section is measured in dilepton events with one electron or muon, and one hadronically decaying tau lepton from the decay t anti-t to (l nu(l)) (tau nu(tau)) b anti-b, where l can be either an electron or…

高能物理 - 实验 · 物理学 2014-11-10 CMS Collaboration

In this study, the sensitivity of future lepton colliders to WIMP dark matter is evaluated assuming WIMP pair production accompanied by a photon from initial state radiation, through which the process can be identified. A full detector…

高能物理 - 实验 · 物理学 2020-05-06 Moritz Habermehl , Mikael Berggren , Jenny List

For the precision study at the ILC 250, measurement of $A_{LR}$ is important as it can constrain SMEFT parameters. The current best measured $A_{LR}$ value is $A_{LR} = 0.1514 \pm 0.0019\,(stat) \pm 0.0011\,(syst)$ which was measured at the…

高能物理 - 实验 · 物理学 2022-03-16 Takahiro Mizuno , Keisuke Fujii , Junping Tian

In the context of the study of the Integrated Sachs Wolfe effect (ISW), we construct a template of the projected density distribution up to $z\simeq 0.7$ by using the Luminous Galaxies (LGs) from the Sloan Digital Sky Survey DR8. We use a…

We present a measurement of the cross section for Z boson production times the branching fraction to tau lepton pairs sigma(ppbar -> Z + X) Br(Z -> tau+ tau-) in proton-antiproton collisions at center of mass energy 1.96 TeV. The…

高能物理 - 实验 · 物理学 2009-02-16 D0 Collaboration , V. Abazov

We present the first lensing mass measurements of Sunyaev-Zel'dovich (SZ) selected clusters. Using optical imaging from the Southern Cosmology Survey (SCS), we present weak lensing masses for three clusters selected by their SZ emission in…

宇宙学与河外天体物理 · 物理学 2015-05-13 Rachel N. McInnes , Felipe Menanteau , Alan F. Heavens , John P. Hughes , Raul Jimenez , Richard Massey , Patrick Simon , Andy N. Taylor

We present high signal-to-noise ratio Keck ESI spectra of the two quasars known to have Gunn-Peterson absorption troughs, SDSS J1030+0524 (z=6.28) and SDSS J1148+5251 (z=6.37). The Ly alpha and Ly beta troughs for SDSS J1030+0524 are very…

天体物理学 · 物理学 2016-08-30 Richard L. White , Robert H. Becker , Xiaohui Fan , Michael A. Strauss

The correlation between neutral Hydrogen (HI) in the intergalactic medium (IGM) and galaxies now attracts great interests. We select four fields which include several coherently strong Ly$\alpha$ absorption systems at $z\sim2.2$ detected by…

A measurement is presented of the $\mathrm{Z}/\gamma^{*} \to \tau\tau$ cross section in pp collisions at $\sqrt{s} = $ 13 TeV, using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 2.3 fb$^{-1}$.…

高能物理 - 实验 · 物理学 2018-09-06 CMS Collaboration

Gauge Mediated Supersymmetry Breaking (GMSB) models provide a possible mechanism to mediate Supersymmetry to the visible sector. In these models the lightest supersymmetric particle (LSP) is usually the gravitino, while the next-to-lightest…

高能物理 - 实验 · 物理学 2019-08-13 Dorthe Ludwig

We present data processing and verification of the Southern Twenty-centimetre All-sky Polarization Survey (STAPS) conducted with Murriyang, the Parkes 64-m telescope. The survey covers the sky area of -89<Dec<0 and the frequency range of…

SPT0346-52 (z=5.7) is the most intensely star-forming galaxy discovered by the South Pole Telescope, with Sigma_SFR ~ 4200 Msol yr^-1 kpc^-2. In this paper, we expand on previous spatially-resolved studies, using ALMA observations of dust…

[ABRIDGED] We are undertaking an imaging study of local star-forming galaxies in the Lyman-alpha (Lya) emission line using the Solar Blind Channel (SBC) of the ACS onboard the HST. Observations have been obtained in Lya and H-alpha (Ha) and…

天体物理学 · 物理学 2015-05-13 Matthew Hayes , Goran Ostlin , J. Miguel Mas-Hesse , Daniel Kunth

Taking seriously phenomenological indications for supersymmetry, we have made a detailed study of unified minimal SUSY, including effects at the few percent level in a consistent fashion. We report here a general analysis without choosing a…

高能物理 - 唯象学 · 物理学 2009-09-15 G. L. Kane , Chris Kolda , Leszek Roszkowski , James D. Wells

We have observed the Class I protostar TMC-1A in the Taurus molecular cloud using the Submillimeter Array (SMA) and the Atacama Large Millimeter/submillimeter Array (ALMA) in the linearly polarized 1.3 mm continuum emission at angular…

星系天体物理 · 物理学 2021-10-27 Yusuke Aso , Woojin Kwon , Naomi Hirano , Tao-Chung Ching , Shih-Ping Lai , Zhi-Yun Li , Ramprasad Rao

For points in SUSY parameter space where the sneutrino is lighter than the lightest chargino and next-to-lightest neutralino, its direct mass determination from sneutrino pair production process at e+e- collider is impossible since it…

高能物理 - 唯象学 · 物理学 2011-07-19 J. Kalinowski , W. Kilian , J. Reuter , T. Robens , K. Rolbiecki

A precise measurement of the cross section of the process $e^+e^-\to\pi^+\pi^-(\gamma)$ from threshold to an energy of 3GeV is obtained with the initial-state radiation (ISR) method using 232fb$^{-1}$ of data collected with the BaBar…

高能物理 - 实验 · 物理学 2017-11-23 J. P. Lees et al.

We report the first measurement of the cross section for Z boson pair production at a hadron collider. This result is based on a data sample corresponding to 1.9 fb-1 of integrated luminosity from ppbar collisions at sqrt{s} = 1.96 TeV…

高能物理 - 实验 · 物理学 2010-05-12 CDF Collaboration , T. Aaltonen

In this work, we study the light stop pair signals at the LHC. We explore the SUSY parameter space with non-universal gaugino and third generation masses at the GUT scale. Recent LHC SUSY search results based on 35pb$^{-1}$ and 1fb$^{-1}$…

高能物理 - 唯象学 · 物理学 2013-05-30 Xiao-Jun Bi , Qi-Shu Yan , Peng-Fei Yin

Using 342$fb^{-1}$ of $e^{+}e^{-}$ annihilation data collected with the BABAR detector at the SLAC PEP-II electron-positron asymmetric energy collider operating at a center-of-mass energies near 10.58GeV, we present the preliminary…

高能物理 - 实验 · 物理学 2015-06-12 Ian M. Nugent