61 Result(s)
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Article
Soft X-ray amplification by Li-like Al10+ and Si11+ ions in recombining plasmas
Experimental studies of soft X-ray lasers were carried out on the six-beam laser facility and the LF 12 laser facility of SIOM. Using a home-made one-dimensional spatially resolved grazing incidence grating sp...
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Article
Studies of recombination X-ray-laser gain and gain-medium uniformity
The time evolution of the uniformity of the line-shaped X-ray-laser gain medium and the spatial characteristics of the recombination X-ray-laser gains of the Li-like ions are studied using long (∼900 ps) and s...
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Article
Experimental and theoretical analysis of fiber Bragg gratings under Transverse Force to a Small Grating Section
Fiber Bragg grating under transverse force on a small grating section is studied by numerical simulation and experimentation. A numerical simulation based on the transfer matrix method is used to calculate the...
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Article
High precision measurement of formaldehyde in air with differential optical absorption spectroscopy
The formaldehyde (HCHO) measurement is described by differential optical absorption spectroscopy (DOAS) technique and the data processing method is discussed in detail, including the selection of retrieval wav...
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Article
Open AccessObservation of long-range, near-side angular correlations in proton-proton collisions at the LHC
Results on two-particle angular correlations for charged particles emitted in proton-proton collisions at center-of-mass energies of 0.9, 2.36, and 7 TeV are presented, using data collected with the CMS detect...
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Article
Open AccessCMS tracking performance results from early LHC operation
The first LHC pp collisions at centre-of-mass energies of 0.9 and 2.36 TeV were recorded by the CMS detector in December 2009. The trajectories of charged particles produced in the collisions were reconstructe...
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Article
Open AccessCharged particle multiplicities in pp interactions at \( \sqrt {s} = 0.9 \) , 2.36, and 7 TeV
Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of
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Article
Open AccessMeasurement of Bose-Einstein correlations in pp collisions at \( \sqrt {s} = 0.9 \) and 7 TeV
Bose-Einstein correlations between identical particles are measured in samples of proton-proton collisions at 0.9 and 7 TeV centre-of-mass energies, recorded by the CMS experiment at the LHC. The signal is obs...
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Article
Open AccessSearch for supersymmetry in pp collisions at \( \sqrt {s} = 7 \) TeV in events with a single lepton, jets, and missing transverse momentum
Results are reported from a search for physics beyond the standard model in proton-proton collisions at a center-of-mass energy of 7 TeV, focusing on the signature with a single, isolated, high-transverse-mome...
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Article
Open AccessMeasurement of the mass difference between top and antitop quarks
A measurement of the mass difference between the top and the antitop quark (Δm t = m t − ...
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Article
Open AccessMeasurement of the underlying event in the Drell–Yan process in proton–proton collisions at \(\sqrt{s} = 7~\mbox{TeV}\)
A measurement of the underlying event (UE) activity in proton–proton collisions at a center-of-mass energy of 7 TeV is performed using Drell–Yan events in a data sample corresponding to an integrated luminosit...
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Article
Open AccessStudy of the inclusive production of charged pions, kaons, and protons in pp collisions at \(\sqrt{s} = 0.9, 2.76,\mbox{ and }7~\mbox{TeV}\)
Spectra of identified charged hadrons are measured in pp collisions at the LHC for \(\sqrt{s} = 0.9, 2.76,\mbox{ and } 7~\mbox{TeV}\) ...
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Article
Measurement of the top-quark mass in \(\mathrm{t}\overline{\mathrm{t}}\) events with dilepton final states in pp collisions at \(\sqrt{s}=7\ \mbox{TeV}\)
The top-quark mass is measured in proton-proton collisions at \(\sqrt{s} = 7\ \mbox{TeV}\) using a data sample correspo...
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Article
Sapphire surface patterning using femtosecond laser micromachining
This study presents an alternative method for micron-resolution patterning of a sapphire surface utilizing the characteristic of an ultra-short pulse (10−15 s) from ytterbium (Yb) femtosecond laser (FS-laser) irr...
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Efficient Wear Leveling in NAND Flash Memory
In the recent years, flash storage devices such as solid-state drives (SSDs) and flash cards have become a popular choice for the replacement of hard disk drives, especially in the applications of mobile compu...
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Article
Open AccessSearch for narrow resonances and quantum black holes in inclusive and b-tagged dijet mass spectra from pp collisions at \( \sqrt{s}=7 \) TeV
A search for narrow resonances and quantum black holes is performed in inclusive and b-tagged dijet mass spectra measured with the CMS detector at the LHC. The data set corresponds to 5 fb−1 of integrated luminos...
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Article
Open AccessSearch for heavy quarks decaying into a top quark and a W or Z boson using lepton + jets events in pp collisions at \( \sqrt{s}=7 \) TeV
Results are presented from a search for the pair-production of heavy quarks, \( \mathrm{Q}\overline{\mathrm{Q}} \) , that decay exclusively into a top quark and a W or Z boson. The se...
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Article
Open AccessStudy of the underlying event at forward rapidity in pp collisions at \( \sqrt{s}=0.9,2.76,\;\mathrm{and}\;7\;\mathrm{TeV} \)
The underlying event activity in proton-proton collisions at forward pseudo-rapidity (−6.6 < η < −5.2) is studied with the CMS detector at the LHC, using a novel observable: the ratio of the forward energy densit...
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Article
Open AccessObservation of a new boson with mass near 125 GeV in pp collisions at \( \sqrt{s}=7 \) and 8 TeV
A detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The d...
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Article
Open AccessMeasurement of masses in the \(\mathrm{t}\overline{\mathrm{t}}\) system by kinematic endpoints in pp collisions at \(\sqrt{s}=7\ \mathrm{TeV}\)
A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for \(\mathrm{t}\overline{\mathrm{t}} \) ev...
