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A search for new physics in top quark production is performed in proton-proton collisions at 13 TeV. The data set corresponds to an integrated luminosity of 35.9 fb$^{-1}$ collected in 2016 with the CMS detector. Events with two…

高能物理 - 实验 · 物理学 2020-05-22 CMS Collaboration

A search is performed for exclusive high-mass $\gamma\gamma$ $\to$ WW and $\gamma\gamma$ $\to$ ZZ production in proton-proton collisions using intact forward protons reconstructed in near-beam detectors, with both weak bosons decaying into…

高能物理 - 实验 · 物理学 2023-08-23 CMS Collaboration , TOTEM Collaboration

A search for anomalous production of events with three or more isolated leptons in pp collisions at sqrt(s) = 7 TeV is presented. The data, corresponding to an integrated luminosity of 4.98 inverse femtobarns, were collected by the CMS…

高能物理 - 实验 · 物理学 2013-01-25 CMS Collaboration

The latest results from CMS on searches for supersymmetry are presented. Searches involving all-hadronic final states with jets and missing transverse energy, and in final states including one or more isolated leptons are discussed. The…

高能物理 - 实验 · 物理学 2019-08-13 Michael Sigamani

Preliminary results on azimuthal asymmetries in leptoproduction of real photons on an unpolarized hydrogen target measured at the HERMES experiment are presented. The analysis of data taken with different beam charges and helicities allows…

高能物理 - 实验 · 物理学 2019-08-13 Dietmar Zeiler

Four-lepton production in proton-proton collisions, $\mathrm{pp}\to (\mathrm{Z}/ \gamma^*)(\mathrm{Z}/\gamma^*) \to 4\ell$, where $\ell = \mathrm{e}$ or $\mu$, is studied at a center-of-mass energy of 13 TeV with the CMS detector at the…

高能物理 - 实验 · 物理学 2018-06-25 CMS Collaboration

It is the purpose of this note to point out that the CMS observation is in line with previous observations in particle physics at large transverse momenta and/or high multiplicities at lower energies, which were interpreted as possible…

高能物理 - 唯象学 · 物理学 2010-10-06 Michael J. Tannenbaum , Richard M. Weiner

A search for the central exclusive production of top quark-antiquark pairs ($\mathrm{t\bar{t}}$) is performed for the first time using proton-tagged events in proton-proton collisions at the LHC at a centre-of-mass energy of 13 TeV. The…

高能物理 - 实验 · 物理学 2024-07-16 CMS , TOTEM Collaborations

A first measurement of the cross section of single top quark production in the t channel in pp collision at sqrt(s)=7 TeV is presented. The measurement is performed on a data sample corresponding to an integrated luminosity of 35.9 pb^-1…

高能物理 - 实验 · 物理学 2011-10-12 Thomas Speer

We present a first study of the single top quark W-associated production (tW) in proton-proton collisions at the LHC at a centre-of-mass energy of 7TeV, using data collected with the CMS experiment. The search is performed in the dileptonic…

高能物理 - 实验 · 物理学 2019-08-14 Jochen Ott

With the absence of the direct detection of new physics and the large data set collected at the LHC, the search for indirect effects in precision measurements became popular. Effective field theories enable to interpret these effects that…

高能物理 - 实验 · 物理学 2021-12-03 Dennis Schwarz

The TOTEM experiment with its detectors in the forward region of CMS and the Roman Pots along the beam line will determine the total pp cross-section via the optical theorem by measuring both the elastic cross-section and the total…

高能物理 - 实验 · 物理学 2019-08-15 Mario Deile

The TOTEM experiment at the LHC is equipped with near beam movable devices -- called Roman Pots (RP) -- which detect protons scattered at the interaction point (IP5) arriving to the detectors through the magnet lattice of the LHC. Proton…

加速器物理 · 物理学 2012-08-10 F. Nemes , H. Niewiadomski

Inclusive and differential cross-sections for the production of a top-quark pair in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 36.1 fb$^{-1}$, collected by the ATLAS…

高能物理 - 实验 · 物理学 2019-06-06 ATLAS Collaboration

In CDF we have observed several exclusive processes: 2-photon --> e+e- and --> mu+mu-, photon+pomeron --> J/psi and psi(2S), and pomeron+pomeron --> chi_c. The cross sections agree with QED, HERA photoproduction data, and theoretical…

高能物理 - 实验 · 物理学 2009-06-12 Michael G. Albrow

We discuss the results of searches for high-mass narrow resonances decaying into pairs of leptons using pp collisions at 7 TeV delivered by LHC and collected with the CMS detector in 2010 and 2011. These include searches for the Z' bosons…

高能物理 - 实验 · 物理学 2019-08-13 Gennadiy Kukartsev

An overview of the most recent measurements on top quark charge asymmetry in top quark pair production is presented. The results are obtained using data collected with ATLAS and CMS detectors in proton-proton collisions at centre-of-mass…

高能物理 - 实验 · 物理学 2017-03-13 Mohsen Naseri

A study of the anomalous couplings of the Higgs boson to vector bosons, including $CP$-violation effects, has been conducted using its production and decay in the WW channel. This analysis is performed on proton-proton collision data…

高能物理 - 实验 · 物理学 2024-08-20 CMS Collaboration

Recent top quark event modeling studies done using LHC proton-proton collision data collected with the CMS detector at centre of mass energies of 8 and 13 TeV and state-of-the-art theoretical predictions are summarized. A new factorized…

高能物理 - 实验 · 物理学 2018-07-01 Efe Yazgan

This review article summarizes results on the production cross section measurements of electroweak boson pairs ($WW$, $WZ$, $ZZ$, $W\gamma$ and $Z\gamma$) at the Large Hadron Collider (LHC) in $pp$ collisions at a center-of-mass energy of…

高能物理 - 实验 · 物理学 2015-06-22 Matthias Schott , Junjie Zhu