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CERN Document Server Sök i 309 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.64 sekunder. 
1.
Measurement of Z-pair production in $e^+e^−$ collisions and constraints on anomalous neutral gauge couplings / Aleph Collaboration
The ZZ production cross section is measured from a data sample corresponding to a total integrated luminosity of 452 pb−1, collected by the ALEPH experiment at LEP at centre-of-mass energies from 192 to 209 GeV. Individual cross sections, extracted at six centre-of-mass energies, are found to be in agreement with Standard Model calculations. [...]
CERN-PH-EP-2009-002.- Geneva : CERN, 2009 - 14 p. ALEPH Papers - Published in : JHEP 04 (2009) 124 Fulltext: PDF; SISSA/IOP Open Access article: PDF;
2.
The Optical Alignment System of the ATLAS Muon Spectrometer Endcaps / Aefsky, S (Brandeis U.) ; Amelung, C (Brandeis U. ; CERN) ; Bensinger, J (Brandeis U.) ; Blocker, C (Brandeis U.) ; Dushkin, A (Brandeis U.) ; Gardner, M (Brandeis U.) ; Hashemi, K (Brandeis U.) ; Henry, E (Harvard U.) ; Kaplan, B (Brandeis U.) ; Ketchum, M (Brandeis U.) et al.
The muon spectrometer of the ATLAS detector at the Large Hadron Collider (LHC) at CERN consists of over a thousand muon precision chambers, arranged in three concentrical cylinders in the barrel region, and in four wheels in each of the two endcaps. The endcap wheels are located between 7m and 22m from the interaction point, and have diameters between 13m and 24m. [...]
ATL-MUON-PUB-2008-003; ATL-COM-MUON-2008-005.- Geneva : CERN, 2008 - 49 p. - Published in : JINST 3 (2008) P11005 Access to fulltext: PDF; SISSA/IOP Open Access article: PDF;
3.
Study of the ATLAS MDT Spectrometer using High Energy CERN combined Test beam Data / Adorisio, C ; Aielli, G ; Alexopoulos, T ; Alviggi, M G ; Amelung, C (CERN) ; Anastopoulos, C ; Avolio, G ; Bachas, K ; Bagnaia, P ; Ball, R et al.
In 2004, a combined system test was performed in the H8 beam line at the CERN SPS with a setup using muon chambers made of Monitored Drift Tubes (MDT) to form a spectrometer which represented 1% of the ATLAS detector. The basic design performances of the muon spectrometer were veried. [...]
ATL-MUON-PUB-2008-005; ATL-COM-MUON-2007-013.- Geneva : CERN, 2009 - Published in : Nucl. Instrum. Methods Phys. Res., A 598 (2009) 400-415 Access to fulltext: PDF;
4.
Conditions database and calibration software framework for ATLAS monitored drift tube chambers / Cirilli, M (Univ. of Michigan) ; Kortner, O (Max-Planck-Institut für Physik, München, Germany) ; Orestano, D (Univ. di Roma Tre ; INFN Roma III) ; Petrucci, F (Univ. di Roma Tre ; INFN Roma III) ; Rothberg, J E (Univ. of Washington, Seattle, USA) ; Van Eldik, N (NIKHEF, Amsterdam, The Netherlands) ; van Kesteren, Z (NIKHEF, Amsterdam, The Netherlands) ; Verducci, M (CERN) ; Woudstra, M (LBNL, Berkeley, USA)
The size and complexity of LHC experiments raise unprecedented challenges not only in terms of detector design, construction and operation, but also in terms of software models and data persistency. One of the most challenging tasks is the calibration of the 375,000 Monitored Drift Tubes (MDTs) that will be used as precision tracking detectors in the Muon Spectrometer of the ATLAS experiment. [...]
2007 - Published in : Nucl. Instrum. Methods Phys. Res., A 572 (2007) 38-39
In : 15th International Conference on Computing In High Energy and Nuclear Physics, Mumbai, India, 13 - 17 Feb 2006, pp.240-243
5.
System Test of the ATLAS Muon Spectrometer in the H8 Beam at the CERN SPS. / Adorisio, C ; Aielli, G ; Alexopoulos, T ; Amaral, P ; Amelung, C ; Avolio, G ; Avramidou, R ; Bagnaia, P ; Barisonzi, M ; Barone, M et al.
We describe a system-test of the ATLAS Muon Spectrometer performed at the H8 beam line of the CERN SPS during 2003. [...]
ATL-MUON-PUB-2007-005 ; ATL-COM-MUON-2007-011.
- 2008. - 50 p.
Access to fulltext
6.
Measurement of the neutral to charged current cross section ratios in neutrino and antineutrino nucleon interactions and determination of the Weinberg angle / Abramowicz, H ; De Groot, J G H ; Hansl-Kozanecka, Traudl ; Knobloch, J ; May, J ; Navarria, E L ; Palazzi, P ; Para, A ; Ranjard, F ; Rothberg, J E et al.
1985 - Published in : Z. Phys. C 28 (1985) 51-56
7.
Search for pentaquark states in Z decays / ALEPH Collaboration
Exotic hadrons made of five quarks (pentaquarks) are searched for in hadronic Z decays collected by the ALEPH detector at LEP. No significant signal is observed. [...]
2004 - Published in : Phys. Lett. B 599 (2004) 1-16
8.
Constraints on anomalous QGCs in $e^{+}e^{-}$ interactions from 183 to 209 GeV / ALEPH Collaboration
The acoplanar photon pairs produced in the reaction e/sup +/e/sup to / nu nu gamma gamma are analysed in the 700 pb/sup -1/ of data collected by the ALEPH detector at centre-of-mass energies between 183 and 209 GeV. No deviation from the standard model predictions is seen in any of the distributions examined. [...]
2004 - Published in : Phys. Lett. B 602 (2004) 31-40
9.
Readout and control of optical alignment devices in the ATLAS muon endcap / Rothberg, Joseph E
Optical devices have been used to monitor the positions and deformations of the ATLAS Endcap Muon chambers in real-time during data-taking in a muon beam at CERN. A part of an octant of the ATLAS Muon endcap spectrometer has been set up in a test beam to study particle tracking precision. [...]
2003
In : 50th IEEE 2003 Nuclear Science Symposium, Medical Imaging Conference, 13th International Workshop on Room Temperature Semiconductor Detectors and Symposium on Nuclear Power Systems, Portland, OR, USA, 19 - 25 Oct 2003, pp.982-985 (v.2)
10.
Limit on right hand weak coupling parameters from inelastic neutrino interactions / Abramowicz, H ; Buchholz, P ; De Groot, J G H ; Dydak, F ; Eisele, F ; Flottmann, T ; Geweniger, C ; Guyot, C ; He, J T ; Klasen, H P et al.
Right handed weak quark current coupled to the usual left handed weak lepton current would be seen in inclusive antineutrino scattering on nuclei as a contribution at large y with the quark (not antiquark) structure function. The authors do not see such a term, and can therefore put an upper limit on the relative strengths of such right handed currents: rho /sup 2/= sigma /sub R// sigma /sub L/ <0.009, 90% confidence. [...]
1982 - Published in : Z. Phys. C 12 (1982) 225-7

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