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Abe F Akimoto H Akopian A Albrow MG Amendolia SR Amidei D Antos J Aota S Apollinari G Arisawa T Asakawa T Ashmanskas W Atac M Azzi-Bacchetta P Bacchetta N Bagdasarov S Bailey MW de Barbaro P Barbaro-Galtieri A Barnes VE Barnett BA Barone M Bauer G Bedeschi F Behrends S Belforte S Bellettini G Bellinger J Benjamin D Bensinger J Beretvas A Berge JP Berryhill J Bertolucci S Bettelli S Bevensee B Bhatti A Biery K Bigongiari C Binkley M Bisello D Blair RE Blocker C Bloom K Blusk S Bodek A Bokhari W 《Physical review letters》2000,84(25):5716-5721
We report the results of a search for a W' boson produced in pp collisions at a center-of-mass energy of 1.8 TeV using a 107 pb-1 data sample recorded by the Collider Detector at Fermilab. We consider the decay channel W'-->&munumu and search for anomalous production of high transverse mass munumu lepton pairs. We observe no excess of events above background and set limits on the rate of W' boson production and decay relative to standard model W boson production and decay using a fit of the transverse mass distribution observed. If we assume standard model strength couplings of the W' boson to quark and lepton pairs, we exclude a W' boson with invariant mass less than 660 GeV/c2 at 95% confidence level. 相似文献
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Maestro P. Adriani O. Akaike Y. Asaoka Y. Berti E. Bigongiari G. Bongi M. Brogi P. Bruno A. Cannady N. Checchia C. Cherry M. L. Collazuol G. Guzik T. G. Ichimura M. Israel M. H. Kasahara K. Kawakubo Y. Krizmanic J. F. Marrocchesi P. S. Messineo A. M. Mitchell J. W. Miyake S. Mori M. Mori N. Motz H. M. Munakata K. Pacini L. Palma F. Papini P. Rauch B. F. Ricciarini S. B. Sakamoto T. Sasaki M. Stolzi F. Sulaj A. Tamura T. Torii S. Wefel J. P. Yoshida K. 《Physics of Atomic Nuclei》2019,82(6):766-772
Physics of Atomic Nuclei - The CALorimetric Electron Telescope (CALET) is an astroparticle physics experiment installed on the International Space Station since August 2015. The CALET mission was... 相似文献
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Affolder T Akimoto H Akopian A Albrow MG Amaral P Amendolia SR Amidei D Anikeev K Antos J Apollinari G Arisawa T Asakawa T Ashmanskas W Atac M Azfar F Azzi-Bacchetta P Bacchetta N Bailey MW Bailey S de Barbaro P Barbaro-Galtieri A Barnes VE Barnett BA Barone M Bauer G Bedeschi F Belforte S Bellettini G Bellinger J Benjamin D Bensinger J Beretvas A Berge JP Berryhill J Bertolucci S Bevensee B Bhatti A Bigongiari C Binkley M Bisello D Blair RE Blocker C Bloom K Blumenfeld B Blusk BS Bocci A 《Physical review letters》2000,84(25):5704-5709
We have searched for direct pair production of scalar top and scalar bottom quarks in 88 pb-1 of pp collisions at sqrt[s]=1.8 TeV with the CDF detector. We looked for events with a pair of heavy flavor jets and missing energy, consistent with scalar top (bottom) quark decays to a charm (bottom) quark and a neutralino. The numbers of events that pass our selections show no significant deviation from standard model expectations. We compare our results to the next-to-leading order scalar quark production cross sections to exclude regions in scalar quark-neutralino mass parameter space. 相似文献
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Marrocchesi P. S. Adriani O. Akaike Y. Asaoka Y. Berti E. Bigongiari G. Bongi M. Brogi P. Bruno A. Cannady N. Checchia C. Cherry M. L. Collazuol G. Ficklin A. W. Guzik T. G. Ichimura M. Israel M. H. Kasahara K. Kawakubo Y. Krizmanic J. F. Messineo A. M. Mitchell J. W. Miyake S. Mori M. Mori N. Motz H. M. Munakata K. Pacini L. Palma F. Papini P. Rauch B. F. Ricciarini S. B. Sakamoto T. Sasaki M. Stolzi F. Sulaj A. Tamura T. Torii S. Wefel J. P. Yoshida K. Zober W. V. 《Physics of Atomic Nuclei》2021,84(6):985-994
Physics of Atomic Nuclei - The CALorimetric Electron Telescope CALET is collecting science data on the International Space Station since October 2015 with excellent and continuous performance.... 相似文献
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Romagnani L Bigongiari A Kar S Bulanov SV Cecchetti CA Esirkepov TZh Galimberti M Jung R Liseykina TV Macchi A Osterholz J Pegoraro F Willi O Borghesi M 《Physical review letters》2010,105(17):175002
Slowly evolving, regularly spaced patterns have been observed in proton projection images of plasma channels drilled by intense (?101? W?cm?2) short (~1 ps) laser pulses propagating in an ionized gas jet. The nature and geometry of the electromagnetic fields generating such patterns have been inferred by simulating the laser-plasma interaction and the following plasma evolution with a two-dimensional particle-in-cell code and the probe proton deflections by particle tracing. The analysis suggests the formation of rows of magnetized soliton remnants, with a quasistatic magnetic field associated with vortexlike electron currents resembling those of magnetic vortices. 相似文献
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