Measurement of the Z gamma ---> nu anti-nu gamma cross section and limits on anomalous Z Z gamma and Z gamma gamma couplings in p anti-p collisions at s**(1/2) = 1.96-TeV

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We present the first observation of the Z{gamma} {yields}{nu}{bar {nu}}{gamma} process at the Tevatron at 5.1 standard deviations significance, based on 3.6 fb{sup -1} of integrated luminosity collected with the D0 detector at the Fermilab Tevatron p{bar p} Collider at {radical}s = 1.96 TeV. The measured Z{gamma} cross section multiplied by the branching fraction of Z {yields} {nu}{bar {nu}} is 32 {+-} 9(stat. + syst.) {+-} 2(lumi.) fb for the photon E{sub T} > 90 GeV. It is in agreement with the standard model prediction of 39 {+-} 4 fb. We set the most restrictive limits on anomalous trilinear Z{gamma}{gamma} ... continued below

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7 pages

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Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, Bannanje Sripath; Adams, M.; Adams, T. et al. February 1, 2009.

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We present the first observation of the Z{gamma} {yields}{nu}{bar {nu}}{gamma} process at the Tevatron at 5.1 standard deviations significance, based on 3.6 fb{sup -1} of integrated luminosity collected with the D0 detector at the Fermilab Tevatron p{bar p} Collider at {radical}s = 1.96 TeV. The measured Z{gamma} cross section multiplied by the branching fraction of Z {yields} {nu}{bar {nu}} is 32 {+-} 9(stat. + syst.) {+-} 2(lumi.) fb for the photon E{sub T} > 90 GeV. It is in agreement with the standard model prediction of 39 {+-} 4 fb. We set the most restrictive limits on anomalous trilinear Z{gamma}{gamma} and ZZ{gamma} gauge boson couplings at a hadron collider to date, with three constraints being the world's strongest.

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  • Report No.: FERMILAB-PUB-09-046-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 950877
  • Archival Resource Key: ark:/67531/metadc926171

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  • February 1, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • July 25, 2017, 11:43 a.m.

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Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, Bannanje Sripath; Adams, M.; Adams, T. et al. Measurement of the Z gamma ---> nu anti-nu gamma cross section and limits on anomalous Z Z gamma and Z gamma gamma couplings in p anti-p collisions at s**(1/2) = 1.96-TeV, article, February 1, 2009; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc926171/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.