NLO-NNLL wino-like N2C1 cross sections

The following cross sections are for wino-like chargino-neutralino pair production (sum of χ̃+1χ̃02 and χ̃-1χ̃02, and also for each subprocess individually). They have been calculated for sqrt(s) = 13 TeV at NLO-NNLL using Resummino 2.0.1 from B. Fuks et al. The Monte Carlo PDF set with 100 replicas PDF4LHC15_mc is used, which is a statistical combination of CT14, MMHT14 and NNPDF3.0, all using αs(mZ2) = 0.118. The use of this combination of PDF sets is recommended for searches for new Physics by the PDF4LHC Working Group. See https://arxiv.org/abs/1510.03865 for more details.

The cross sections are computed for degenerate charginos and neutralinos. The mass is denoted as mχ̃. The following sentence describes all the assumptions in the cross section calculations and is suitable to be included in the description of the interpretation of your results:

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

When using these cross sections, some references have to be cited. They can be found below in bibtex format. The references can also be downloaded from this Twiki, see attachments at the bottom.

Resummino:

@article{Debove:2010kf,
      author         = "Debove, Jonathan and Fuks, Benjamin and Klasen, Michael",
      title          = "{Threshold resummation for gaugino pair production at
                        hadron colliders}",
      journal        = "Nucl. Phys. B",
      volume         = "842",
      year           = "2011",
      pages          = "51-85",
      doi            = "10.1016/j.nuclphysb.2010.08.016",
      eprint         = "1005.2909",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "IPHC-PHENO-10-02, LPSC-10-050",
      SLACcitation   = "%%CITATION = ARXIV:1005.2909;%%"
}
@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;%%",
}
@article{Fiaschi:2018hgm,
      author         = "Fiaschi, Juri and Klasen, Michael",
      title          = "{Neutralino-chargino pair production at NLO+NLL with
                        resummation-improved parton density functions for LHC Run
                        II}",
      journal        = "Phys. Rev. D",
      volume         = "98",
      year           = "2018",
      number         = "5",
      pages          = "055014",
      doi            = "10.1103/PhysRevD.98.055014",
      eprint         = "1805.11322",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "MS-TP-18-19",
      SLACcitation   = "%%CITATION = ARXIV:1805.11322;%%"
}

LHAPDF:

@article{Buckley:2014ana,
      author         = "Buckley, Andy and Ferrando, James and Lloyd, Stephen and
                        Nordström, Karl and Page, Ben and Rüfenacht, Martin and
                        Schönherr, Marek and Watt, Graeme",
      title          = "{LHAPDF6: parton density access in the LHC precision
                        era}",
      journal        = "Eur. Phys. J.",
      volume         = "C75",
      year           = "2015",
      pages          = "132",
      doi            = "10.1140/epjc/s10052-015-3318-8",
      eprint         = "1412.7420",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "GLAS-PPE-2014-05, MCNET-14-29, IPPP-14-111, DCPT-14-222",
      SLACcitation   = "%%CITATION = ARXIV:1412.7420;%%"
}

PDF4LHC:

@article{Butterworth:2015oua,
      author         = "Butterworth, Jon and others",
      title          = "{PDF4LHC recommendations for LHC Run II}",
      journal        = "J. Phys.",
      volume         = "G43",
      year           = "2016",
      pages          = "023001",
      doi            = "10.1088/0954-3899/43/2/023001",
      eprint         = "1510.03865",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "OUTP-15-17P, SMU-HEP-15-12, TIF-UNIMI-2015-14,
                        LCTS-2015-27, CERN-PH-TH-2015-249",
      SLACcitation   = "%%CITATION = ARXIV:1510.03865;%%"
}
@article{Carrazza:2015hva,
      author         = "Carrazza, Stefano and Latorre, José I. and Rojo, Juan
                        and Watt, Graeme",
      title          = "{A compression algorithm for the combination of PDF
                        sets}",
      journal        = "Eur. Phys. J.",
      volume         = "C75",
      year           = "2015",
      pages          = "474",
      doi            = "10.1140/epjc/s10052-015-3703-3",
      eprint         = "1504.06469",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "TIF-UNIMI-2015-2, OUTP-15-01P, IPPP-15-22, DCPT-15-44",
      SLACcitation   = "%%CITATION = ARXIV:1504.06469;%%"
}
@article{Watt:2012tq,
      author         = "Watt, G. and Thorne, R. S.",
      title          = "{Study of Monte Carlo approach to experimental
                        uncertainty propagation with MSTW 2008 PDFs}",
      journal        = "JHEP",
      volume         = "08",
      year           = "2012",
      pages          = "052",
      doi            = "10.1007/JHEP08(2012)052",
      eprint         = "1205.4024",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "CERN-PH-TH-2012-132, LCTS-2012-11",
      SLACcitation   = "%%CITATION = ARXIV:1205.4024;%%"
}

CT14:

@article{Dulat:2015mca,
      author         = "Dulat, Sayipjamal and Hou, Tie-Jiun and Gao, Jun and
                        Guzzi, Marco and Huston, Joey and Nadolsky, Pavel and
                        Pumplin, Jon and Schmidt, Carl and Stump, Daniel and Yuan,
                        C. P.",
      title          = "{New parton distribution functions from a global analysis
                        of quantum chromodynamics}",
      journal        = "Phys. Rev.",
      volume         = "D93",
      year           = "2016",
      number         = "3",
      pages          = "033006",
      doi            = "10.1103/PhysRevD.93.033006",
      eprint         = "1506.07443",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      SLACcitation   = "%%CITATION = ARXIV:1506.07443;%%"
}

MMHT14:

@article{Harland-Lang:2014zoa,
      author         = "Harland-Lang, L. A. and Martin, A. D. and Motylinski, P.
                        and Thorne, R. S.",
      title          = "{Parton distributions in the LHC era: MMHT 2014 PDFs}",
      journal        = "Eur. Phys. J.",
      volume         = "C75",
      year           = "2015",
      number         = "5",
      pages          = "204",
      doi            = "10.1140/epjc/s10052-015-3397-6",
      eprint         = "1412.3989",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "LCTS-2014-47, IPPP-14-97, DCPT-14-194",
      SLACcitation   = "%%CITATION = ARXIV:1412.3989;%%"
}

NNPDF:

@article{Ball:2014uwa,
      author         = "Ball, Richard D. and others",
      title          = "{Parton distributions for the LHC Run II}",
      collaboration  = "NNPDF",
      journal        = "JHEP",
      volume         = "04",
      year           = "2015",
      pages          = "040",
      doi            = "10.1007/JHEP04(2015)040",
      eprint         = "1410.8849",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ph",
      reportNumber   = "EDINBURGH-2014-15, IFUM-1034-FT, CERN-PH-TH-2013-253,
                        OUTP-14-11P, CAVENDISH-HEP-14-11",
      SLACcitation   = "%%CITATION = ARXIV:1410.8849;%%"
}

To calculate these cross sections, this repository can be used. The SLHA files can be found there as well: wino.in and hino.in.

Should cross section information be needed for a mass that is not tabulated below, one can obtain it by 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("C1N2", "wino", mass)' 

where mass is the mass of the sparticle in GeV. The result of the interpolation can be seen here.

NLO+NNLL Wino cross sections for combined χ̃02χ̃+1 and χ̃02χ̃-1 production at sqrt(s) = 13 TeV

mχ̃ [GeV] σ [fb] uncertainty [fb]
50 417770 696.6
75 63783 82.41
100 22102.9 25.196
125 9927.9 10.828
150 5155.6 5.474
175 2952.8 3.056
200 1813.1 1.849
225 1172.6 1.1734
250 789.62 0.7728
275 549.14 0.5302
300 392.12 0.3718
325 286.215 0.26686
350 212.792 0.1895
375 160.781 0.14143
400 123.173 0.10717
425 95.519 0.08301
450 74.859 0.06442
475 59.226 0.0508
500 47.253 0.04018
525 37.982 0.032034
550 30.7444 0.025739
575 25.0374 0.020556
600 20.4945 0.016704
625 16.8672 0.013668
650 13.9503 0.01125
675 11.585 0.009296
700 9.6567 0.007711
725 8.0947 0.006458
750 6.7982 0.005438
775 5.7264 0.004567
800 4.8377 0.0038461
825 4.0993 0.0032873
850 3.47894 0.0027673
875 2.96087 0.0023529
900 2.52495 0.0020033
925 2.15711 0.0017106
950 1.84652 0.0014704
975 1.58372 0.0012608
1000 1.36043 0.0010851
1025 1.17053 0.0009371
1050 1.00887 0.0008127
1075 0.87091 0.0007093
1100 0.75249 0.0006216
1125 0.65125 0.0005493
1150 0.56421 0.00048962
1175 0.48931 0.00043978
1200 0.425029 0.00040342
1225 0.369814 0.00038215
1250 0.322177 0.00037879
1275 0.274336 0.00022294
1300 0.238538 0.00019293
1325 0.207569 0.00016906
1350 0.180766 0.00015679
1375 0.157602 0.00014198
1400 0.137431 0.00012859
1425 0.119906 0.00011546
1450 0.104702 8.24e-05
1475 0.091293 8.914e-05
1500 0.079729 7.96e-05
1525 0.071265 0.0002732
1550 0.060885 4.8864e-05
1575 0.053205 4.2783e-05
1600 0.046377 4.832e-05
1625 0.0406531 3.2997e-05
1650 0.0355025 2.9644e-05
1675 0.0318695 7.673e-05
1700 0.0275475 6.176e-05
1725 0.0237031 2.0166e-05
1750 0.0207373 1.7653e-05
1775 0.0181855 1.5097e-05
1800 0.0159014 2.0426e-05
1825 0.0139105 1.1663e-05
1850 0.0121639 1.0261e-05
1875 0.0109251 0.00012979
1900 0.0119513 0.0002787
1925 0.0081084 7.483e-06
1950 0.0071135 6.398e-05
1975 0.0061945 5.729e-06
2000 0.0054185 5.0234e-06

NLO+NNLL Wino cross sections for χ̃02χ̃+1 production at sqrt(s) = 13 TeV

mχ̃ [GeV] σ [fb] uncertainty [fb]
50 2.4452e+05 415.3
75 38322 50.7
100 13532 15.86
125 6175.3 6.961
150 3252.2 3.583
175 1886.2 2.011
200 1171.4 1.236
225 765.51 0.7866
250 520.48 0.5224
275 365.21 0.3589
300 262.97 0.2537
325 193.46 0.1834
350 144.9 0.1316
375 110.25 0.09882
400 85.02 0.07534
425 66.347 0.05893
450 52.307 0.04597
475 41.617 0.03624
500 33.383 0.02881
525 26.971 0.02309
550 21.939 0.01864
575 17.95 0.01498
600 14.756 0.01223
625 12.195 0.01005
650 10.127 0.008307
675 8.4419 0.006892
700 7.0618 0.005739
725 5.9441 0.004828
750 5.0092 0.004081
775 4.233 0.003441
800 3.5871 0.002909
825 3.0489 0.002495
850 2.594 0.002108
875 2.2135 0.001799
900 1.8922 0.001537
925 1.6202 0.001314
950 1.3899 0.001135
975 1.1946 0.0009763
1000 1.0282 0.0008432
1025 0.88636 0.000731
1050 0.76539 0.0006367
1075 0.66195 0.0005588
1100 0.57287 0.0004912
1125 0.49665 0.0004372
1150 0.43095 0.0003932
1175 0.3743 0.0003566
1200 0.32567 0.0003314
1225 0.28387 0.0003195
1250 0.24774 0.0003238
1275 0.20966 0.0001756
1300 0.1824 0.0001524
1325 0.15877 0.0001334
1350 0.13828 0.0001226
1375 0.12057 0.0001097
1400 0.10515 9.822e-05
1425 0.091726 8.722e-05
1450 0.080204 6.559e-05
1475 0.069812 6.631e-05
1500 0.060929 5.793e-05
1525 0.053713 8.2e-05
1550 0.046594 3.919e-05
1575 0.040697 3.434e-05
1600 0.035363 3.559e-05
1625 0.031055 2.638e-05
1650 0.027097 2.33e-05
1675 0.024346 4.879e-05
1700 0.020997 3.916e-05
1725 0.018035 1.604e-05
1750 0.015758 1.405e-05
1775 0.013802 1.21e-05
1800 0.01197 1.134e-05
1825 0.010525 9.348e-06
1850 0.0091874 8.22e-06
1875 0.0081381 2.759e-05
1900 0.0081127 5.64e-05
1925 0.0061026 5.642e-06
1950 0.0051895 1.625e-05
1975 0.004641 4.373e-06
2000 0.0040368 4.035e-06

NLO+NNLL Wino cross sections for χ̃02χ̃-1 production at sqrt(s) = 13 TeV

mχ̃ [GeV] σ [fb] uncertainty [fb]
50 1.7325e+05 281.3
75 25461 31.71
100 8570.9 9.336
125 3752.6 3.867
150 1903.4 1.891
175 1066.6 1.045
200 641.7 0.613
225 407.09 0.3868
250 269.14 0.2504
275 183.93 0.1713
300 129.15 0.1181
325 92.755 0.08346
350 67.892 0.0579
375 50.531 0.04261
400 38.153 0.03183
425 29.172 0.02408
450 22.552 0.01845
475 17.609 0.01456
500 13.87 0.01137
525 11.011 0.008944
550 8.8054 0.007099
575 7.0874 0.005576
600 5.7385 0.004474
625 4.6722 0.003618
650 3.8233 0.002943
675 3.1431 0.002404
700 2.5949 0.001972
725 2.1506 0.00163
750 1.789 0.001357
775 1.4934 0.001126
800 1.2506 0.0009371
825 1.0504 0.0007923
850 0.88494 0.0006593
875 0.74737 0.0005539
900 0.63275 0.0004663
925 0.53691 0.0003966
950 0.45662 0.0003354
975 0.38912 0.0002845
1000 0.33223 0.0002419
1025 0.28417 0.0002061
1050 0.24348 0.000176
1075 0.20896 0.0001505
1100 0.17962 0.0001304
1125 0.1546 0.0001121
1150 0.13326 9.642e-05
1175 0.11501 8.318e-05
1200 0.099359 7.202e-05
1225 0.085944 6.265e-05
1250 0.074437 5.499e-05
1275 0.064676 4.734e-05
1300 0.056138 4.053e-05
1325 0.048799 3.566e-05
1350 0.042486 3.419e-05
1375 0.037032 3.228e-05
1400 0.032281 3.037e-05
1425 0.02818 2.824e-05
1450 0.024498 1.681e-05
1475 0.021481 2.283e-05
1500 0.0188 2.167e-05
1525 0.017552 0.0001912
1550 0.014291 9.674e-06
1575 0.012508 8.443e-06
1600 0.011014 1.273e-05
1625 0.0095981 6.617e-06
1650 0.0084055 6.344e-06
1675 0.0075235 2.794e-05
1700 0.0065505 2.26e-05
1725 0.0056681 4.126e-06
1750 0.0049793 3.603e-06
1775 0.0043835 2.997e-06
1800 0.0039314 9.086e-06
1825 0.0033855 2.315e-06
1850 0.0029765 2.041e-06
1875 0.002787 0.0001022
1900 0.0038386 0.0002223
1925 0.0020058 1.841e-06
1950 0.001924 4.773e-05
1975 0.0015535 1.356e-06
2000 0.0013817 9.884e-07

-- BasilSchneider - 2018-11-14

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