Zeroing in on Supersymmetric Radiation Amplitude Zeros

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Radiation amplitude zeros have long been used to test the Standard Model. Here, we consider the supersymmetric radiation amplitude zero in chargino-neutralino associated production, which can be observed at the luminosity upgraded LHC. Such an amplitude zero only occurs if the neutralino has a large wino fraction and hence this observable can be used to determine the neutralino eigenstate content. We find that this observable can be measured by comparing the p{sub T} spectrum of the softest lepton in the trilepton {tilde {chi}}{sub 1}{sup {+-}} {tilde {chi}}{sub 2}{sup 0} decay channel to that of a control process such as {tilde ... continued below

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20 pages

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Hewett, JoAnne L.; Ismail, Ahmed; Rizzo, Thomas G. & /SLAC February 15, 2012.

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Radiation amplitude zeros have long been used to test the Standard Model. Here, we consider the supersymmetric radiation amplitude zero in chargino-neutralino associated production, which can be observed at the luminosity upgraded LHC. Such an amplitude zero only occurs if the neutralino has a large wino fraction and hence this observable can be used to determine the neutralino eigenstate content. We find that this observable can be measured by comparing the p{sub T} spectrum of the softest lepton in the trilepton {tilde {chi}}{sub 1}{sup {+-}} {tilde {chi}}{sub 2}{sup 0} decay channel to that of a control process such as {tilde {chi}}{sub 1}{sup +} {tilde {chi}}{sub 1}{sup -} or {tilde {chi}}{sub 2}{sup 0} {tilde {chi}}{sub 2}{sup 0}. We test this technique on a previously generated model sample of the 19 dimensional parameter space of the phenomenological MSSM, and find that it is effective in determining the wino content of the neutralino.

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20 pages

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  • Journal Name: Phys.Rev.D84:115015,2011

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  • Report No.: SLAC-PUB-14544
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1035112
  • Archival Resource Key: ark:/67531/metadc840075

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • February 15, 2012

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Dec. 8, 2016, 2:03 p.m.

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Hewett, JoAnne L.; Ismail, Ahmed; Rizzo, Thomas G. & /SLAC. Zeroing in on Supersymmetric Radiation Amplitude Zeros, article, February 15, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc840075/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.