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CERN Document Server 找到 2,050 笔记录  1 - 10下一个最後  跳到记录: 检索需时 1.78 秒. 
1.
(100)
Search for stable and long-lived massive charged particles in $e^{+} e^{-}$ collisions at $\sqrt{s}$ = 130-183 GeV / OPAL Collaboration
A search for stable and long-lived massive particles of electric charge |Q/e| = 1 or 2/3, pair-produced in e+e- collisions at centre-of-mass energies from 130 to 183 GeV, is reported by the OPAL collaboration at LEP. No evidence for production of these particles was observed in a mass range between 45 and 89.5 GeV. [...]
hep-ex/9803026; CERN-EP-98-039; CERN-EP-98-039.- Geneva : CERN, 1998 - 18 p. - Published in : Phys. Lett. B 433 (1998) 195-208 Fulltext: ep-98-039 - PDF; arXiv:hep-ex_9803026 - PDF; 9803026 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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2.
(91)
Search for Stable and Long-Lived Massive Charged Particles in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 130-209 GeV / OPAL Collaboration
A search for stable and long-lived massive particles of electric charge |Q/e|=1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at centre-of-mass energies from 130 to 209 GeV. These particles are assumed to be pair-produced in e+e- collisions and not to interact strongly. [...]
hep-ex/0305031; CERN-EP-2003-016; CERN-EP-2003-016.- Geneva : CERN, 2003 - 17 p. - Published in : Phys. Lett. B 572 (2003) 8-20 Fulltext: arXiv:hep-ex_0305031 - PDF; S0370269303006397 - XML; ep-2003-016 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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3.
(75)
A search for heavy stable and long-lived squarks and sleptons in $e^+ e^-$ collisions at energies from 130 to 183 GeV / DELPHI Collaboration
A search for stable and long-lived heavy charged particles used the data taken by the DELPHI experiment at energies from 130 to 183 GeV. The Cherenkov light detected in the Ring Imaging Cherenkov Detector and the ionization loss measured in the Time Projection Chamber identify heavy particles from masses of 2 to nearly 89 GeV/c^2. [...]
hep-ex/9811007; CERN-EP-98-171; CERN-EP-98-171.- Geneva : CERN, 1998 - 18 p. - Published in : Phys. Lett. B 444 (1998) 491 Fulltext: arXiv:hep-ex_9811007 - PDF; 9811007 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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4.
(58)
Search for Heavy Stable and Long-Lived Particles in $e^{+}e^{-}$ Collisions at $\sqrt{s}$=189 GeV / DELPHI Collaboration
A search for stable and long-lived heavy charged particles was performed using the data taken by the DELPHI experiment at an energy of 189 GeV. The Cherenkov light detected in the Ring Imaging Cherenkov Detectorand the ionisation loss measured in the Time Projection Chamber were used to identify heavy particles passing through the detector [...]
hep-ex/0103038; CERN-EP-2000-020; CERN-EP-2000-020.- Geneva : CERN, 2000 - 9 p. - Published in : Phys. Lett. B 478 (2000) 65-72 Fulltext: ep-2000-020 - PDF; arXiv:hep-ex_0103038 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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5.
(57)
Search for pair-production of long-lived heavy charged particles in $e^+ e^-$ annihilation / ALEPH Collaboration
A search for pair-production of long-lived, heavy, singly-charged particles has been performed with data collected by the ALEPH detector at a centre-of-mass energy of 172 GeV. Data at \sqrt{s} = 161, 136, and 130 GeV are also included to improve the sensitivity to lower masses. [...]
hep-ex/9706013; CERN-PPE-97-041; CERN-PPE-97-41; CERN-PPE-97-041.- Geneva : CERN, 1997 - 16 p. ALEPH Papers - Published in : Phys. Lett. B 405 (1997) 379-388 Fulltext: arXiv:hep-ex_9706013 - PDF; 9706013 - PDF; ppe-97-041 - PDF; External link: hep-ex/9706013 PDF - Please contact the library if you need to access this document.
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6.
(52)
Search for lightest neutralino and stau pair production in light gravitino scenarios with stau NLSP / DELPHI Collaboration
Promptly decaying lightest neutralinos and long-lived staus are searched for in the context of light gravitino scenarios. It is assumed that the stau is the next to lightest supersymmetric particle (NLSP) and that the lightest neutralino is the next to NLSP (NNLSP) [...]
hep-ex/9811006; CERN-EP-98-170; CERN-EP-98-170.- Geneva : CERN, 1999 - 25 p. - Published in : Eur. Phys. J. C 7 (1999) 595-607 Fulltext: 9811006 - PDF; arXiv:hep-ex_9811006 - PDF; External link: hep-ex/9811006 PDF - Please contact the library if you need to access this document.
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7.
(50)
Search for R-Parity Violating Decays of Scalar Fermions at LEP / OPAL Collaboration
A search for pair produced scalar fermions with couplings that violate R-parity has been performed using a data sample corresponding to an integrated luminosity of 56 pb-1 at a centre-of-mass energy of sqrt{s}= 183 GeV collected with the OPAL detector at LEP. An important consequence of R-parity breaking interactions is that the lightest supersymmetric particle is expected to be unstable. [...]
hep-ex/9904015; CERN-EP-99-043; CERN-EP-99-043.- Geneva : CERN, 2000 - 50 p. - Published in : Eur. Phys. J. C 12 (2000) 1-24 Fulltext: arXiv:hep-ex_9904015 - PDF; 9904015 - PDF; External link: hep-ex/9904015 PDF - Please contact the library if you need to access this document.
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8.
(50)
SEARCH FOR AN INVISIBLE VECTOR BOSON FROM $\pi^{0}$ DECAYS AT NA62 / NA62 Collaboration
The high-intensity setup, trigger system flexibility and detector performance make the NA62 experiment at CERN particularly suitable to perform direct searches for long-lived hidden-sector particles, such as dark photons, dark scalars, axion-like particles, and heavy neutral leptons, using kaon and pion decays as well as operating the experiment in dump mode. Results from NA62 will be presented on a search for $π^0$ decays to one photon and an invisible massive dark photon. [...]
2019 - 6 p. - Published in : (2019) , pp. 194-199 Fulltext: PDF;
In : International Conference on the Structure and the Interactions of the Photon, Frascati, Italy, 3 - 7 Jun 2019, pp.194-199
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9.
(50)
Search for anomalous production of dilepton events with missing transverse momentum in $e^{+} e^{-}$ collisions at $\sqrt{s}$ = 161 and 172 GeV / OPAL Collaboration
Events containing a pair of charged leptons and significant missing transverse momentum are selected from a data sample corresponding to a total integrated luminosity of 20.6 pb^-1 at centre-of-mass energies of 161 GeV and 172 GeV. The observed number of events, four at 161 GeV and nine at 172 GeV, is consistent with the number expected from Standard Model processes, predominantly arising from W+W- production with each W decaying leptonically. [...]
hep-ex/9710010; CERN-PPE-97-124; CERN-PPE-97-124.- Geneva : CERN, 1998 - 61 p. - Published in : Eur. Phys. J. C 4 (1998) 47-74 Fulltext: arXiv:hep-ex_9710010 - PDF; 9710010 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
(48)
Search for Chargino and Neutralino Production at $\sqrt{s} = 189 GeV$ at LEP / OPAL Collaboration
A search for charginos and neutralinos, predicted by supersymmetric theories, is performed using a data sample of 182.1 pb-1 taken at a centre-of-mass energy of 189 GeV with the OPAL detector at LEP. No evidence for chargino or neutralino production is found. [...]
hep-ex/9909051; CERN-EP-99-123; CERN-EP-99-123.- Geneva : CERN, 2000 - 22 p. - Published in : Eur. Phys. J. C 14 (2000) 187-198 Fulltext: 9909051 - PDF; arXiv:hep-ex_9909051 - PDF; External link: hep-ex/9909051 PDF - Please contact the library if you need to access this document.
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