Abazov, V. M. ; Narasimham, V. S. ; et., al (2004) Search for pair production of light scalar top quarks in pp̅ collisions at √s=1.8 TeV Physical Review Letters, 93 (1). 011801_1-011801_6. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v93/i1/e011801
Related URL: http://dx.doi.org/10.1103/PhysRevLett.93.011801
Abstract
Using 85.2±3.6 pb-1 of pp̅ collisions collected at √s=1.8 TeV with the D0 detector at Fermilab's Tevatron Collider, we present the results of a search for direct pair production of scalar top quarks (t˜), the supersymmetric partners of the top quark. We examined events containing two or more jets and missing transverse energy, the signature of light scalar top quark decays to charm quarks and neutralinos. After selections, we observe 27 events while expecting 31.1±6.4 events from known standard model processes. Comparing these results to next-to-leading-order production cross sections, we exclude a significant region of t˜ and neutralino phase space. In particular, we exclude the t˜ mass mt˜<122 GeV/c2 for a neutralino mass of 45 GeV/c2.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 34894 |
Deposited On: | 02 May 2011 13:17 |
Last Modified: | 17 May 2016 17:47 |
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