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相关论文: Probing Compressed Top Squarks at the LHC at 14 Te…

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A search is presented for additional scalar (H) or pseudoscalar (A) Higgs bosons decaying to a top quark pair in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set analyzed corresponds to an integrated luminosity of…

高能物理 - 实验 · 物理学 2024-07-25 CMS Collaboration

Highlights of measurements of the properties of the top quark at the LHC are presented. The measurements probe a range of the properties of the top quark, including the structure of the $Wtb$ vertex, the top-Z coupling and the top-quark…

高能物理 - 实验 · 物理学 2017-05-26 Mark Owen

A first measurement of the top quark mass using the decay channel t to (W to l nu) (b to J/psi + X to mu+ mu- + X) is presented. The analysis uses events selected from the proton-proton collisions recorded with the CMS detector at the LHC…

高能物理 - 实验 · 物理学 2017-01-02 CMS Collaboration

We study the potential of the current Large Hadron Collider (LHC) 7 TeV run to search for heavy, colored vector-like fermions, which are assumed to carry a conserved Z2 quantum number forcing them to be pair-produced. Each fermion is…

高能物理 - 唯象学 · 物理学 2015-05-27 Maxim Perelstein , Jing Shao

A search is presented for pair production of heavy vector-like T and B quarks in proton-proton collisions at $\sqrt{s} =$ 13 TeV. The data sample corresponds to an integrated luminosity of 35.9 fb$^{-1}$, collected with the CMS detector at…

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

The mass of the top quark is measured in a data set corresponding to 4.6 fb$^{-1}$ of proton-proton collisions with centre-of-mass energy $\sqrt{s}=7$ TeV collected by the ATLAS detector at the LHC. Events consistent with hadronic decays of…

高能物理 - 实验 · 物理学 2015-04-29 ATLAS Collaboration

A search is presented for particle dark matter produced in association with a pair of top quarks in pp collisions at a centre-of-mass energy of sqrt(s) = 8 TeV. The data were collected with the CMS detector at the LHC and correspond to an…

高能物理 - 实验 · 物理学 2015-08-04 CMS Collaboration

Supersymmetry with a compressed spectrum could be responsible for the negative results from supersymmetric searches at LHC. Squarks and gluinos well below the TeV scale could have escaped detection since all search channels lose sensitivity…

高能物理 - 唯象学 · 物理学 2015-06-05 Genevieve Belanger , Matti Heikinheimo , Veronica Sanz

We employ the ATLAS search results for events containing jets and large missing transverse momentum, corresponding to an integrated luminosity of 1 fb^{-1}, to investigate the constrained minimal supersymmetric model (CMSSM) with b-\tau…

高能物理 - 唯象学 · 物理学 2011-11-21 M. Adeel Ajaib , Tong Li , Qaisar Shafi

We analyze the energy spectra of $single$ b-jets and B-hadrons resulting from the production and decay of top quarks within the SM at the LHC at the NLO QCD. For both hadrons and jets, we calculate the correlation of the peak of the…

高能物理 - 唯象学 · 物理学 2016-12-21 Kaustubh Agashe , Doojin Kim , Roberto Franceschini , Markus Schulze

We measure the mass of the top quark in lepton+jets final states using the full sample of $p\bar{p}$ collision data collected by the D0 experiment in Run~II of the Fermilab Tevatron Collider at $\sqrt s=1.96~$TeV, corresponding to $9.7~{\rm…

高能物理 - 实验 · 物理学 2014-07-21 D0 Collaboration

A search is presented for the pair production of new heavy resonances, each decaying into a top quark (t) or antiquark and a gluon (g). The analysis uses data recorded with the CMS detector from proton-proton collisions at a center-of-mass…

高能物理 - 实验 · 物理学 2025-04-01 CMS Collaboration

A search for new resonances decaying into jets containing b-hadrons in $pp$ collisions with the ATLAS detector at the LHC is presented in the dijet mass range from 0.57 TeV to 7 TeV. The dataset corresponds to an integrated luminosity of up…

高能物理 - 实验 · 物理学 2018-09-27 ATLAS Collaboration

Several methods for the determination of the mass of the top quark with the ATLAS detector at the LHC are presented. All dominant decay channels of the top quark can be explored. The measurements are in most cases dominated by systematic…

A search for a heavy resonance decaying to a top quark and a W boson in the fully hadronic final state is presented. The analysis is performed using data from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to…

高能物理 - 实验 · 物理学 2021-12-23 CMS Collaboration

A search is presented for heavy vector-like quarks (VLQs) that couple only to light quarks in proton-proton collisions at $\sqrt{s} =$ 8 TeV at the LHC. The data were collected by the CMS experiment during 2012 and correspond to an…

高能物理 - 实验 · 物理学 2018-04-18 CMS Collaboration

A search for pair production of supersymmetric particles in events with two oppositely charged leptons (electrons or muons) and missing transverse momentum is reported. The data sample corresponds to an integrated luminosity of 35.9…

高能物理 - 实验 · 物理学 2018-11-26 CMS Collaboration

A search optimized for new heavy particles decaying to two $b$-quarks and produced in association with additional $b$-quarks is reported. The sensitivity is improved by $b$-tagging at least one lower-$p_{\rm{T}}$ jet in addition to the two…

高能物理 - 实验 · 物理学 2024-01-22 ATLAS Collaboration

This article presents a search for a heavy charged Higgs boson produced in association with a top quark and a bottom quark, and decaying into a $W$ boson and a $125$ GeV Higgs boson $h$. The search is performed in final states with one…

高能物理 - 实验 · 物理学 2025-03-06 ATLAS Collaboration

We propose a new method to measure a theoretically well-defined top quark mass at the LHC. This method is based on the "weight function method," which we proposed in our preceding paper. It requires only lepton energy distribution and is…

高能物理 - 唯象学 · 物理学 2018-05-09 Sayaka Kawabata , Yasuhiro Shimizu , Yukinari Sumino , Hiroshi Yokoya