NLO-NLL Higgsino-like Cross Sections (fully-degenerate case)

The following cross sections are for pure higgsino-like pair production assuming N1, C1, N2 with degenerate mass m_χ̃, and for the sum of the relevant processes: N1N2, N1C1, N2C1 (=N1C1), C1C1 (N1N1 and N2N2 vanish). They have been calculated for sqrt(s) = 13 TeV at NLO-NLL using the resummino code from B. Fuks et al with CTEQ6.6 and MSTW2008nlo90cl PDFs. Final numbers are calculated using the PDF4LHC recommendations for the two sets of cross sections.

The following sentence accurately describes all the assumptions in the cross sections calculation and is suitable to be included in the interpretation description:

The production cross sections are computed at NLO plus next-to-leading-log (NLL) precision
in a limit of mass-degenerate higgsino $\chiz_2$, $\chipm_1$,  and $\chiz_1$ with all the other 
sparticles assumed to be heavy and decoupled.

The slha file used to produce these numbers can found in the attachment below: hino.dat

When using these cross sections, please cite the following two references, available below in bibtex format:

Show References Hide References

@article{Fuks:2012qx,
      author         = "Fuks, Benjamin and Klasen, Michael and Lamprea, David R.
                        and Rothering, Marcel",
      title          = "{Gaugino production in proton-proton collisions at a
                        center-of-mass energy of 8 TeV}",
      journal        = "JHEP",
      volume         = "10",
      pages          = "081",
      doi            = "10.1007/JHEP10(2012)081",
      year           = "2012",
      eprint         = "1207.2159",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "IPHC-PHENO-12-07, MS-TP-12-05",
      SLACcitation   = "%%CITATION = ARXIV:1207.2159;%%",
}

@article{Fuks:2013vua,
      author         = "Fuks, Benjamin and Klasen, Michael and Lamprea, David R.
                        and Rothering, Marcel",
      title          = "{Precision predictions for electroweak superpartner
                        production at hadron colliders with {\sc Resummino}}",
      journal        = "Eur. Phys. J. C",
      volume         = "73",
      pages          = "2480",
      doi            = "10.1140/epjc/s10052-013-2480-0",
      year           = "2013",
      eprint         = "1304.0790",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "CERN-PH-TH-2013-064, IPHC-PHENO-13-02, MS-TP-13-06",
      SLACcitation   = "%%CITATION = ARXIV:1304.0790;%%",
}

Should the analyzer need the cross-section information for a mass value that is not tabulated below, s/he can obtain it using the ROOT macros provided under:

/afs/cern.ch/user/a/amete/public/EWKGauginoCrossSections_13TeV

For this specific grid one needs to do:

root -l 'get_gaugino.C("CN","hino",mass)' 

where

mass

NLO-NLL hino-like χ̃χ̃

CTEQ6.6 numbers: NLO-NLL hino-like χ̃χ̃

MSTW2008nlo90cl numbers: NLO-NLL hino-like χ̃χ̃

-- LesyaShchutska - 2015-02-11