期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.202001
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资金
- U. S. Department of Energy
- National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Natural Sciences and Engineering Research Council of Canada
- National Science Council of the Republic of China
- Swiss National Science Foundation
- A.P. Sloan Foundation
- Bundesministerium fur Bildung und Forschung, Germany
- Korean Science and Engineering Foundation
- Korean Research Foundation
- Science and Technology Facilities Council
- Royal Society, U. K
- Institut National de Physique Nucleaire et Physique des Particules
- CNRS
- Russian Foundation for Basic Research
- Ministerio de Educacion y Ciencia
- STFC [PP/E002722/1, ST/G502412/1, PP/E000452/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E000444/1, PP/E000452/1, PPA/A/S/2003/00461/2] Funding Source: researchfish
We present measurements of the forward-backward charge asymmetry in top pair production using 1: 9 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of A(FB)(p (p) over bar) = 0.17 +/- 0.08 in the p (p) over bar frame and A(FB)(t (t) over bar) = 0.24 +/- 0.14 in the t (t) over bar frame. The values are consistent with the standard model expectation and disfavor exotic production mechanisms with significant negative values.
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