Search for heavy neutrinos and right-handed bosons in events with two leptons and jets in collisions at [Formula: see text] with the ATLAS detector.

This letter reports on a search for hypothetical heavy neutrinos, , and right-handed gauge bosons, , in events with high transverse momentum objects which include two reconstructed leptons and at least one hadronic jet. The results were obtained from data corresponding to an integrated luminosity of 2.1 fb collected in proton-proton collisions at [Formula: see text] with the ATLAS detector at the CERN Large Hadron Collider.

Measurement of the top quark mass with the template method in the [Formula: see text] channel using ATLAS data.

The top quark mass has been measured using the template method in the [Formula: see text] channel based on data recorded in 2011 with the ATLAS detector at the LHC. The data were taken at a proton-proton centre-of-mass energy of [Formula: see text] and correspond to an integrated luminosity of 1.04 fb.

Measurement of [Formula: see text] production with a veto on additional central jet activity in collisions at [Formula: see text] TeV using the ATLAS detector.

A measurement of the jet activity in [Formula: see text] events produced in proton-proton collisions at a centre-of-mass energy of 7 TeV is presented, using 2.05 fb of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. The [Formula: see text] events are selected in the dilepton decay channel with two identified -jets from the top quark decays.

Search for lepton flavour violation in the continuum with the ATLAS detector in [Formula: see text] collisions at the LHC.

This paper presents a search for the -channel exchange of an -parity violating scalar top quark ([Formula: see text]) in the continuum using 2.1 fb of data collected by the ATLAS detector in [Formula: see text] collisions at the Large Hadron Collider. Data are found to be consistent with the expectation from the Standard Model backgrounds.

Measurement of the charge asymmetry in top quark pair production in collisions at [Formula: see text] using the ATLAS detector.

A measurement of the top-antitop production charge asymmetry is presented using data corresponding to an integrated luminosity of 1.04 fb of collisions at [Formula: see text] TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a -quark.

Search for the Higgs boson in the H→WW→lνjj decay channel in pp collisions at √s=7 TeV with the ATLAS detector.

A search for a Higgs boson has been performed in the H→WW→ℓνjj channel in 1.04 fb(-1) of pp collision data at √s=7 TeV recorded with the ATLAS detector at the Large Hadron Collider. No significant excess of events is observed over the expected background and limits on the Higgs boson production cross section are derived for a Higgs boson mass in the range 240 GeV View Article and Find Full Text PDF

Search for a standard model Higgs boson in the H→ZZ→ℓ(+)ℓ(-)νν decay channel with the ATLAS detector.

A search for a heavy standard model Higgs boson decaying via H→ZZ→→ℓ(+)ℓ(-)νν, where ℓ=e, μ, is presented. It is based on proton-proton collision data at √s=7 TeV, collected by the ATLAS experiment at the LHC in the first half of 2011 and corresponding to an integrated luminosity of 1.04 fb(-1).

Measurement of the W+ W- cross section in sqrt(s) = 7 TeV pp collisions with ATLAS.

This Letter presents a measurement of the W+ W- production cross section in sqrt(s) = 7  TeV pp collisions by the ATLAS experiment, using 34  pb(-1) of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate events are observed with an expected background of 1.7 ± 0.

Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in sqrt[s] = 7 TeV pp collisions at the LHC.

This Letter presents the first search for a heavy particle decaying into an e ± μ(-/+) final state in sqrt[s] = 7 TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35 pb(-1). No excess above the standard model background expectation is observed.

Measurement of dijet azimuthal decorrelations in pp collisions at sqrt(s)=7 TeV.

Azimuthal decorrelations between the two central jets with the largest transverse momenta are sensitive to the dynamics of events with multiple jets. We present a measurement of the normalized differential cross section based on the full data set (∫Ldt=36  pb(-1)) acquired by the ATLAS detector during the 2010 sqrt(s)=7  TeV proton-proton run of the LHC. The measured distributions include jets with transverse momenta up to 1.

Search for supersymmetry using final states with one lepton, jets, and missing transverse momentum with the ATLAS detector in √s=7 TeV pp collisions.

This Letter presents the first search for supersymmetry in final states containing one isolated electron or muon, jets, and missing transverse momentum from √s=7  TeV proton-proton collisions at the LHC. The data were recorded by the ATLAS experiment during 2010 and correspond to a total integrated luminosity of 35  pb(-1). No excess above the standard model background expectation is observed.

Search for diphoton events with large missing transverse energy in 7 TeV proton-proton collisions with the ATLAS detector.

A search for diphoton events with large missing transverse energy is presented. The data were collected with the ATLAS detector in proton-proton collisions at √s=7 TeV at the CERN Large Hadron Collider and correspond to an integrated luminosity of 3.1 pb⁻¹.

Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at sqrt[S(NN)] =2.76 TeV with the ATLAS detector at the LHC.

By using the ATLAS detector, observations have been made of a centrality-dependent dijet asymmetry in the collisions of lead ions at the Large Hadron Collider. In a sample of lead-lead events with a per-nucleon center of mass energy of 2.76 TeV, selected with a minimum bias trigger, jets are reconstructed in fine-grained, longitudinally segmented electromagnetic and hadronic calorimeters.

Search for new particles in two-jet final states in 7 TeV proton-proton collisions with the ATLAS detector at the LHC.

A search for new heavy particles manifested as resonances in two-jet final states is presented. The data were produced in 7 TeV proton-proton collisions by the LHC and correspond to an integrated luminosity of 315  nb⁻¹ collected by the ATLAS detector. No resonances were observed.

[The use of fluorescent liposomal immunoanalysis for the diagnostics and indication of glanders and melioidosis].

The authors have developed a homogenous method for the detection of the cells, surface antigen, and Ag8 of glanders and melioidosis pathogens and antibodies to them, based on the compliment-dependent lysis of Ag8-sensitized liposomes. The method is highly specific; its sensitivity to antibodies to glanders and melioidosis pathogens is 24 to 440 times higher than that of RID: its sensitivity to Ag8 is 100 ng/ml corresponding to 1.25x10-10 M, and its sensitivity to cells is 10(5) to 10(6) cells/ml).

[Assessment of the results of determination of the blood level of dehydroepiandrosterone sulfate by using various commercial reagents].

The results of determination of the blood levels of dehydroepiandrosterone (DHEA) sulfate (DHEA-S) were comparatively assessed, by using the test systems "Steroid-IEA-DHEA-sulfate" (ZAO "Alkor Bio" (Saint Petersburg, Russia)) and "DHEA-S ELISA ("DRG Instruments GmbH (Germany)). The studies were conducted in apparently healthy 19-59-year-old women living in the middle belt of Western Siberia. They revealed the high sensitivity of the study test systems to age-related changes in the blood concentration of DHEA-S.

[The use of liposomes for detection of the surface lipopolysaccharide antigen, Vibrio cholerae cells, and antibodies against them].

A test system for determination of Vibrio cholerae cells, surface O-antigen, and antibodies against them was developed on the basis of complement-dependent lysis of liposomes sensitized by the lipopolysaccharide-dependent antigen from Vibrio cholerae 569B. The factors that affect the function of the liposomal reagent were studied, and the conditions for detecting antibodies and antigenic material were optimized. This system is highly specific and sensitive to be used for the determination of anticholeraic antibodies (30-50 times as effective as agglutination tests), lipopolysaccharide antigen (100 ng/ml, which corresponded to 3.

[Efficiency criteria and basic parameters of powder inhalers].

A high therapeutic efficiency and ecological safety are typical of powder inhalers. However, the designs of devices, serially manufactured in many world countries, are different, which affects their technical parameters. There are also differences pertaining to the definition "efficiency criterion" of a powder inhaler.

[Remote monitoring control techniques for biological air disperse systems].

Described in the paper are the results of designing a combination-luminescence lidar for the automated express determination of the concentration and dynamic distribution of biological pollutants in the atmosphere. It was established as possible to detect simultaneously the signals of aerosols' luminescence and those of combined atmospheric nitrogen dispersion to ensure an effective monitoring of biological aerosols along the probing route.

[Change in the dynamics of a spin probe in complement-dependent lysis of a liposome].

The mobility of phospholipid chains in membranes of liposomes consisting of egg lecitin, cholesterol, dicetylphosphate, sensitized by the lipopolysaccharide antigen F. tularensis by the action of a homologous antiserum and a rabbit complement preparation was studied using 5- and 16-doxylstearate spin probes. It was shown that, during the immune lysis of liposome membranes, changes in the dynamics of spin probes occur, which correlate with the formation of transmembrane channels and exit of the fluorescent marker from the interior of liposomes.

[Sulforodamine 101: novel effective marker in liposomal immunoassay].

The new fluorescence marker Sulforodamine 101 that allows one to avoid a labour-consuming stage of purification of a marker substance (for example, calceine, other fluorescein derivatives) from hydrophobic admixtures that reduce the storage of a liposomal reagent was used in liposomal immunoassay. Sulforodamine 101 shows the maximum increase in a fluorescence signal when liposomes are destroyed with encapsulated marker, which is 45 times greater than does Sulforodamine B (8 times) and comparable with calceine (30 times). The comparative studies using liposomes containing calceine and Sulforodamine 101 have indicated that they are similar storage and sensitivity (50 ng/ml) of liposomal test system as determined by the concentration of F.

[Use of laser flow-type fluorescence aerosol particle counter to evaluate the concentration of microbes in the surface air under high dust content].

The paper deals with the use of a laser flow-type fluorescence aerosol particle counter to evaluate the concentrations of microbes in the surface air under high dust content. Various circuits of flow-type optic aerosol recorders are analyzed. Flow spectral luminescence analysis of some particles flow while exciting the fourth harmonics of a pulse laser on yttrium-aluminium garnet with neodymium by ultraviolet radiation is shown to be the most optimum method for indication of individual aerosol particles.

[Development and design of a sampling kit for microbiological studies].

The paper deals with the development and design of a kit for choosing samples from various objects for microbiological studies. The studies clarified the composition of the set and requirements for the complete set and its parts. The design of this set parts was made and the design documents were drawn up for manufacturing the sampling set.