Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC

We study the effect of soft gluon emission in the hadroproduction of gluino-gluino and squark-antisquark pairs at the next-to-leading logarithmic accuracy within the framework of the minimal supersymmetric model. We present the calculation of the one-loop soft anomalous dimension matrices controlling the color evolution of the underlying hard-scattering processes. The numerical results for resummed cross sections for proton-proton collisions at the Large Hadron Collider are discussed in detail.

[1]  Howard E. Haber,et al.  The Search for Supersymmetry: Probing Physics Beyond the Standard Model , 1985 .

[2]  Michael Spira,et al.  Squark and gluino production at hadron colliders , 1997 .

[3]  N. Kidonakis,et al.  RESUMMATION FOR QCD HARD SCATTERING , 1997, hep-ph/9705234.

[4]  S. Moch,et al.  Theoretical status and prospects for top-quark pair production at hadron colliders , 2008, 0804.1476.

[5]  F. Petriello,et al.  Grand unification and light color-octet scalars at the LHC , 2008, 0809.2106.

[6]  The top cross section in hadronic collisions , 1996, hep-ph/9602208.

[7]  Y. Kiyo,et al.  Top-quark pair production near threshold at LHC , 2008, 0812.0919.

[8]  W. Hollik,et al.  Hadronic production of top-squark pairs with electroweak NLO contributions , 2007, 0712.0287.

[9]  T. Sjöstrand,et al.  On the threshold behaviour of heavy top production , 1990 .

[10]  B. Fuks,et al.  Joint resummation for slepton pair production at hadron colliders , 2007, 0709.3057.

[11]  G. Rodrigo,et al.  Proton Stability, Dark Matter and Light Color Octet Scalars in Adjoint SU(5) Unification , 2008, 0803.4156.

[12]  P. Nason,et al.  The Resummation of soft gluons in Hadronic Collisions , 1996 .

[13]  N. Kidonakis,et al.  Evolution of color exchange in QCD hard scattering , 1998, hep-ph/9803241.

[14]  W. Hollik,et al.  Squark anti-squark pair production at the LHC: The Electroweak contribution , 2008, 0806.1433.

[15]  A. Kulesza,et al.  Threshold resummation for squark-antisquark and gluino-pair production at the LHC. , 2008, Physical review letters.

[16]  P. Zerwas,et al.  Gluino-pair production at the Tevatron , 1995 .

[17]  N. Kidonakis,et al.  Threshold resummation for dijet cross-sections , 1998, hep-ph/9801268.

[18]  A. Mitov,et al.  The massive soft anomalous dimension matrix at two loops , 2009, 0903.3241.

[19]  P. Zerwas,et al.  Stop production at hadron colliders , 1997, hep-ph/9710451.

[20]  T. V. Ritbergen,et al.  GROUP THEORY FACTORS FOR FEYNMAN DIAGRAMS , 1998, hep-ph/9802376.

[21]  R. Bonciani,et al.  Sudakov resummation of multiparton QCD cross sections , 2003, hep-ph/0307035.

[22]  L. Trentadue,et al.  Summing soft emission in QCD , 1982 .

[23]  M. Drees,et al.  Electroweak contributions to squark pair production at the CERN LHC , 2007, 0709.2544.

[24]  L. Dixon,et al.  Universal structure of subleading infrared poles in gauge theory amplitudes , 2008, 0805.3515.

[25]  P. Zerwas,et al.  Color-Octet Scalars of N=2 Supersymmetry at the LHC , 2008, 0812.3586.

[26]  N. Kidonakis,et al.  Subleading logarithms in QCD hard scattering , 1996 .

[27]  Paolo Nason,et al.  NLL resummation of the heavy-quark hadroproduction cross-section , 1998 .

[28]  A. Martin,et al.  Parton distributions for the LHC , 2009, 0901.0002.

[29]  Michael Gerbush,et al.  Color-octet scalars at the CERN LHC , 2007, 0710.3133.

[30]  Threshold resummation for slepton-pair production at hadron colliders , 2007, hep-ph/0701202.

[31]  J.A.M. Vermaseren,et al.  New features of FORM , 2000 .

[32]  G. Sterman,et al.  Hard Elastic Scattering in QCD: Leading Behavior , 1989 .

[33]  Dawson,et al.  Search for supersymmetric particles in hadron-hadron collisions. , 1985, Physical review. D, Particles and fields.

[34]  U. Langenfeld,et al.  Higher-order soft corrections to squark hadro-production , 2009, 0901.0802.

[35]  L. Dixon,et al.  Two-loop anomalous-dimension matrix for soft-gluon exchange. , 2006, Physical review letters.

[36]  G. Sterman,et al.  Joint resummation in electroweak boson production , 2002, hep-ph/0202251.

[37]  M. Wise,et al.  Color octet scalar production at the CERN LHC , 2007, 0706.0909.

[38]  C. Kim,et al.  Factorization and resummation for single color-octet scalar production at the LHC , 2009, 0903.3668.

[39]  S. Catani,et al.  Resummation of the QCD perturbative series for hard processes , 1989 .

[40]  K. Kong,et al.  Massive color-octet bosons and pairs of resonances at hadron colliders , 2007, 0709.2378.

[41]  John Ellis,et al.  Int. J. Mod. Phys. , 2005 .

[42]  Michael Spira,et al.  PROSPINO: A Program for the production of supersymmetric particles in next-to-leading order QCD , 1996 .

[43]  H. Baer,et al.  Precision gluino mass at the CERN LHC in supersymmetric models with decoupled scalars , 2007, hep-ph/0703289.

[44]  G. Sterman.  Summation of Large Corrections to Short Distance Hadronic Cross-Sections , 1987 .

[45]  L. Dixon,et al.  The Two-loop soft anomalous dimension matrix and resummation at next-to-next-to leading pole , 2006, hep-ph/0607309.

[46]  J. Pumplin,et al.  Heavy quark mass effects in deep inelastic scattering and global QCD analysis , 2007 .

[47]  S. Catani,et al.  The gluon form factor to higher orders: Gluon-gluon annihilation at small Qt , 1988 .

[48]  G. Sterman,et al.  Recoil and threshold corrections in short-distance cross sections , 2000, hep-ph/0010080.

[49]  Ansgar Denner,et al.  Feyn Calc―computer-algebraic calculation of Feynman amplitudes , 1991 .