Result 1 - 10 of total 77
Atlanta medical and surgical journal (1884)
2022 Volume 14, Issue 6, Page(s) 397–402
| Language | English |
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| Publishing date | 2022-07-11 |
| Publishing country | United States |
| Document type | Journal Article |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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Atlanta medical and surgical journal (1884)
2022 Volume 14, Issue 5, Page(s) 323–326
| Language | English |
|---|---|
| Publishing date | 2022-07-11 |
| Publishing country | United States |
| Document type | Journal Article |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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2007 Volume 44, Issue 1, Page(s) 98–101
| Language | English |
|---|---|
| Publishing date | 2007-06-27 |
| Publishing country | United States |
| Document type | Journal Article |
| ZDB-ID | 340-2 |
| ISSN | 1528-1140 ; 0003-4932 |
| ISSN (online) | 1528-1140 |
| ISSN | 0003-4932 |
| DOI | 10.1097/00000658-190607000-00009 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
| Uk I Zs.35/1: Show issues | Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular ab Jg. 2022: Lesesaal (EG) |
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2020
Abstract: TORCH is a time-of-flight detector designed to perform particle identification over the momentum range 2$-$10 GeV/c for a 10 m flight path. The detector exploits prompt Cherenkov light produced by charged particles traversing a quartz plate of 10 mm ... ...
| Abstract | TORCH is a time-of-flight detector designed to perform particle identification over the momentum range 2$-$10 GeV/c for a 10 m flight path. The detector exploits prompt Cherenkov light produced by charged particles traversing a quartz plate of 10 mm thickness. Photons are then trapped by total internal reflection and directed onto a detector plane instrumented with customised position-sensitive Micro-Channel Plate Photo-Multiplier Tube (MCP-PMT) detectors. A single-photon timing resolution of 70 ps is targeted to achieve the desired separation of pions and kaons, with an expectation of around 30 detected photons per track. Studies of the performance of a small-scale TORCH demonstrator with a radiator of dimensions 120 $\times$ 350 $\times$ 10 mm$^3$ have been performed in two test-beam campaigns during November 2017 and June 2018. Single-photon time resolutions ranging from 104.3 ps to 114.8 ps and 83.8 ps to 112.7 ps have been achieved for MCP-PMTs with granularity 4 $\times$ 64 and 8 $\times$ 64 pixels, respectively. Photon yields are measured to be within $\sim$10% and $\sim$30% of simulation, respectively. Finally, the outlook for future work with planned improvements is presented. Comment: 21 pages, 9 figures, to be published in Nuclear Inst. and Methods in Physics Research, A |
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| Keywords | Physics - Instrumentation and Detectors |
| Subject code | 621 |
| Publishing date | 2020-02-18 |
| Publishing country | us |
| Document type | Book ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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2021
Abstract: The TORCH time-of-flight detector is designed to provide a 15 ps timing resolution for charged particles, resulting in $\pi$/$K$ particle identification up to 10 GeV/c momentum over a 10 m flight path. Cherenkov photons, produced in a quartz plate of 10 ... ...
| Abstract | The TORCH time-of-flight detector is designed to provide a 15 ps timing resolution for charged particles, resulting in $\pi$/$K$ particle identification up to 10 GeV/c momentum over a 10 m flight path. Cherenkov photons, produced in a quartz plate of 10 mm thickness, are focused onto an array of micro-channel plate photomultipliers (MCP-PMTs) which measure the photon arrival times and spatial positions. A half-scale ($660\times1250\times10$ mm$^3$) TORCH demonstrator module has been tested in an 8 GeV/c mixed proton-pion beam at CERN. Customised square MCP-PMTs of active area $53\times53$ mm$^2$ and granularity $64\times64$ pixels have been employed, which have been developed in collaboration with an industrial partner. The single-photon timing performance and photon yields have been measured as a function of beam position in the radiator, giving measurements which are consistent with expectations. The expected performance of TORCH for high luminosity running of the LHCb Upgrade II has been simulated. Comment: 6 pages, 6 figures, Proceedings of the TIPP2021 Conference, TRIUMF, 24 - 28 May 2021, submitted to IoP Conference Series |
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| Keywords | Physics - Instrumentation and Detectors ; High Energy Physics - Experiment |
| Subject code | 621 |
| Publishing date | 2021-11-08 |
| Publishing country | us |
| Document type | Book ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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2020
Abstract: The TORCH time-of-flight detector will provide particle identification between 2-10 GeV/c momentum over a flight distance of 10 m, and is designed for large-area coverage, up to 30 m^2. A 15 ps time-of-flight resolution per incident particle is ... ...
| Abstract | The TORCH time-of-flight detector will provide particle identification between 2-10 GeV/c momentum over a flight distance of 10 m, and is designed for large-area coverage, up to 30 m^2. A 15 ps time-of-flight resolution per incident particle is anticipated by measuring the arrival times from Cherenkov photons produced in a synthetic fused silica radiator plate of 10 mm thickness. Customised Micro-Channel Plate Photomultiplier Tube (MCP-PMT) photon detectors of 53 x 53 mm^2 active area with a 64 x 64 granularity have been developed with industrial partners. Test-beam studies using both a small-scale TORCH demonstrator and a half-length TORCH module are presented. The desired timing resolution of 70 ps per single photon is close to being achieved. Comment: 10 pages, 9 figures. Proceedings of the DIRC2019 Workshop, Castle Rauischholzhausen 11-13 Sept 2019. arXiv admin note: substantial text overlap with arXiv:1810.06658 |
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| Keywords | Physics - Instrumentation and Detectors ; High Energy Physics - Experiment |
| Subject code | 621 |
| Publishing date | 2020-03-06 |
| Publishing country | us |
| Document type | Book ; Online |
| Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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The Southern medical record
1897 Volume 27, Issue 8, Page(s) 379–383
| Language | English |
|---|---|
| Publishing date | 1897-08 |
| Publishing country | United States |
| Document type | Journal Article |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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2022 Volume 128, Issue 16, Page(s) 162001
Abstract: Two narrow resonant states are observed in the Λ_{b}^{0}K^{-}π^{+} mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 6 fb^ ...
| Abstract | Two narrow resonant states are observed in the Λ_{b}^{0}K^{-}π^{+} mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 6 fb^{-1}. The minimal quark content of the Λ_{b}^{0}K^{-}π^{+} system indicates that these are excited Ξ_{b}^{0} baryons. The masses of the Ξ_{b}(6327)^{0} and Ξ_{b}(6333)^{0} states are m[Ξ_{b}(6327)^{0}]=6327.28_{-0.21}^{+0.23}±0.12±0.24 and m[Ξ_{b}(6333)^{0}]=6332.69_{-0.18}^{+0.17}±0.03±0.22 MeV, respectively, with a mass splitting of Δm=5.41_{-0.27}^{+0.26}±0.12 MeV, where the uncertainties are statistical, systematic, and due to the Λ_{b}^{0} mass measurement. The measured natural widths of these states are consistent with zero, with upper limits of Γ[Ξ_{b}(6327)^{0}]<2.20(2.56) and Γ[Ξ_{b}(6333)^{0}]<1.60(1.92) MeV at a 90% (95%) credibility level. The significance of the two-peak hypothesis is larger than nine (five) Gaussian standard deviations compared to the no-peak (one-peak) hypothesis. The masses, widths, and resonant structure of the new states are in good agreement with the expectations for a doublet of 1D Ξ_{b}^{0} resonances. |
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| Language | English |
| Publishing date | 2022-05-06 |
| Publishing country | United States |
| Document type | Journal Article |
| ZDB-ID | 208853-8 |
| ISSN | 1079-7114 ; 0031-9007 |
| ISSN (online) | 1079-7114 |
| ISSN | 0031-9007 |
| DOI | 10.1103/PhysRevLett.128.162001 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
| Z 4' 58/153: Show issues |
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2022 Volume 128, Issue 8, Page(s) 82001
Abstract: Events containing a Z boson and a charm jet are studied for the first time in the forward region of proton-proton collisions. The data sample used corresponds to an integrated luminosity of 6 fb^{-1} collected at a center-of-mass energy of 13 TeV with ... ...
| Abstract | Events containing a Z boson and a charm jet are studied for the first time in the forward region of proton-proton collisions. The data sample used corresponds to an integrated luminosity of 6 fb^{-1} collected at a center-of-mass energy of 13 TeV with the LHCb detector. In events with a Z boson and a jet, the fraction of charm jets is determined in intervals of Z-boson rapidity in the range 2.0<y(Z)<4.5. A sizable enhancement is observed in the forwardmost y(Z) interval, which could be indicative of a valencelike intrinsic-charm component in the proton wave function.<br /> |
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| Language | English |
| Publishing date | 2022-03-11 |
| Publishing country | United States |
| Document type | Journal Article |
| ZDB-ID | 208853-8 |
| ISSN | 1079-7114 ; 0031-9007 |
| ISSN (online) | 1079-7114 |
| ISSN | 0031-9007 |
| DOI | 10.1103/PhysRevLett.128.082001 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
| Z 4' 58/153: Show issues |
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2022 Volume 128, Issue 22, Page(s) 221801
Abstract: The first full angular analysis and an updated measurement of the decay-rate CP asymmetry of the D^{0}→π^{+}π^{-}μ^{+}μ^{-} and D^{0}→K^{+}K^{-}μ^{+}μ^{-} decays are reported. The analysis uses proton-proton collision data collected with the LHCb ... ...
| Abstract | The first full angular analysis and an updated measurement of the decay-rate CP asymmetry of the D^{0}→π^{+}π^{-}μ^{+}μ^{-} and D^{0}→K^{+}K^{-}μ^{+}μ^{-} decays are reported. The analysis uses proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. The dataset corresponds to an integrated luminosity of 9 fb^{-1}. The full set of CP -averaged angular observables and their CP asymmetries are measured as a function of the dimuon invariant mass. The results are consistent with expectations from the standard model and with CP symmetry. |
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| Language | English |
| Publishing date | 2022-06-16 |
| Publishing country | United States |
| Document type | Journal Article |
| ZDB-ID | 208853-8 |
| ISSN | 1079-7114 ; 0031-9007 |
| ISSN (online) | 1079-7114 |
| ISSN | 0031-9007 |
| DOI | 10.1103/PhysRevLett.128.221801 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
| Z 4' 58/153: Show issues |
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