Measurement of the WW production cross section in p(p)over-bar collisions at root(s)over-bar=1.96 TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
22/04/2005
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Resumo |
We present a measurement of the W boson pair-production cross section in p(p) over bar collisions at a center-of-mass energy of root s=1.96 TeV. The data, collected with the Run II D0 detector at Fermilab, correspond to an integrated luminosity of 224-252 pb(-1) depending on the final state (ee, e mu, or mu mu). We observe 25 candidates with a background expectation of 8.1 +/- 0.6(stat)+/- 0.6(syst)+/- 0.5(lum) events. The probability for an upward fluctuation of the background to produce the observed signal is 2.3x10(-7), equivalent to 5.2 standard deviations. The measurement yields a cross section of 13.8(-3.8)(+4.3)(stat)(-0.9)(+1.2)(syst)+/- 0.9(lum) pb, in agreement with predictions from the standard model. |
Formato |
7 |
Identificador |
http://dx.doi.org/10.1103/PhysRevLett.94.151801 Physical Review Letters. College Pk: American Physical Soc, v. 94, n. 15, 7 p., 2005. 0031-9007 http://hdl.handle.net/11449/23279 10.1103/PhysRevLett.94.151801 WOS:000228632500010 WOS000228632500010.pdf |
Idioma(s) |
eng |
Publicador |
American Physical Soc |
Relação |
Physical Review Letters |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |