Abstract
LHC searches for missing transverse energy in association with a jet allow to place strong bounds on the interactions between dark matter and quarks. In this article, we present an extension of the POWHEG BOX capable of calculating the underlying cross sections at the next-to-leading order level. This approach enables us to consistently include the effects of parton showering and to apply realistic experimental cuts. We find significant differences from a fixed-order analysis that neglects parton showering effects. In particular, next-to-leading order corrections do not lead to a significant enhancement of the mono-jet cross section once a veto on additional jets is imposed. Nevertheless, these corrections reduce the theoretical uncertainties of the signal prediction and therefore improve the reliability of the derived bounds. We present our results in terms of simple rescaling factors, which can be directly applied to existing experimental analyses and discuss the impact of changing experimental cuts.
References
CDMS-II collaboration, Z. Ahmed et al., Dark Matter Search Results from the CDMS II Experiment, Science 327 (2010) 1619 [arXiv:0912.3592] [INSPIRE].
XENON100 collaboration, E. Aprile et al., Dark Matter Results from 225 Live Days of XENON100 Data, Phys. Rev. Lett. 109 (2012) 181301 [arXiv:1207.5988] [INSPIRE].
DAMA and LIBRA collaborations, R. Bernabei et al., New results from DAMA/LIBRA, Eur. Phys. J. C 67 (2010) 39 [arXiv:1002.1028] [INSPIRE].
C. Aalseth et al., Search for an Annual Modulation in a P-type Point Contact Germanium Dark Matter Detector, Phys. Rev. Lett. 107 (2011) 141301 [arXiv:1106.0650] [INSPIRE].
G. Angloher et al., Results from 730 kg days of the CRESST-II Dark Matter Search, Eur. Phys. J. C 72 (2012) 1971 [arXiv:1109.0702] [INSPIRE].
CDMS collaboration, R. Agnese et al., Silicon Detector Dark Matter Results from the Final Exposure of CDMS II, Phys. Rev. Lett. (2013) [arXiv:1304.4279] [INSPIRE].
CDF collaboration, Search for Extra Dimensions in Jets+Missing Energy in RunII, http://www-cdf.fnal.gov/physics/exotic/r2a/20070322.monojet/public/ykk.html.
CMS collaboration, Search for dark matter and large extra dimensions in monojet events in pp collisions at \( \sqrt{s}=7 \) TeV, JHEP 09 (2012) 094 [arXiv:1206.5663] [INSPIRE].
CMS collaboration, Search for new physics in monojet events in pp collisions at \( \sqrt{s}=8 \) TeV, CMS-PAS-EXO-12-048 (2012).
CMS collaboration, Search for Dark Matter and Large Extra Dimensions in pp Collisions Yielding a Photon and Missing Transverse Energy, Phys. Rev. Lett. 108 (2012) 261803 [arXiv:1204.0821] [INSPIRE].
ATLAS collaboration, Search for dark matter candidates and large extra dimensions in events with a jet and missing transverse momentum with the ATLAS detector, JHEP 04 (2013) 075 [arXiv:1210.4491] [INSPIRE].
ATLAS collaboration, Search for New Phenomena in Monojet plus Missing Transverse Momentum Final States using 10 fb −1 of pp Collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector at the LHC, ATLAS-CONF-2012-147 (2012).
ATLAS collaboration, Search for dark matter candidates and large extra dimensions in events with a photon and missing transverse momentum in pp collision data at \( \sqrt{s}=7 \) TeV with the ATLAS detector, Phys. Rev. Lett. 110 (2013) 011802 [arXiv:1209.4625] [INSPIRE].
J. Goodman et al., Constraints on Light Majorana dark Matter from Colliders, Phys. Lett. B 695 (2011)185 [arXiv:1005.1286] [INSPIRE].
Y. Bai, P.J. Fox and R. Harnik, The Tevatron at the Frontier of Dark Matter Direct Detection, JHEP 12 (2010) 048 [arXiv:1005.3797] [INSPIRE].
A. Rajaraman, W. Shepherd, T.M. Tait and A.M. Wijangco, LHC Bounds on Interactions of Dark Matter, Phys. Rev. D 84 (2011) 095013 [arXiv:1108.1196] [INSPIRE].
J. Goodman et al., Constraints on Dark Matter from Colliders, Phys. Rev. D 82 (2010) 116010 [arXiv:1008.1783] [INSPIRE].
P.J. Fox, R. Harnik, J. Kopp and Y. Tsai, LEP Shines Light on Dark Matter, Phys. Rev. D 84 (2011) 014028 [arXiv:1103.0240] [INSPIRE].
P.J. Fox, R. Harnik, J. Kopp and Y. Tsai, Missing Energy Signatures of Dark Matter at the LHC, Phys. Rev. D 85 (2012) 056011 [arXiv:1109.4398] [INSPIRE].
N. Zhou, D. Berge and D. Whiteson, Mono-everything: combined limits on dark matter production at colliders from multiple final states, arXiv:1302.3619 [INSPIRE].
W. Giele and E.N. Glover, Higher order corrections to jet cross-sections in e + e − annihilation, Phys. Rev. D 46 (1992) 1980 [INSPIRE].
U. Baur, T. Han and J. Ohnemus, QCD corrections and anomalous couplings in Zγ production at hadron colliders, Phys. Rev. D 57 (1998) 2823 [hep-ph/9710416] [INSPIRE].
U. Haisch, F. Kahlhoefer and J. Unwin, The impact of heavy-quark loops on LHC dark matter searches, JHEP 07 (2013) 125 [arXiv:1208.4605] [INSPIRE].
P.J. Fox and C. Williams, Next-to-Leading Order Predictions for Dark Matter Production at Hadron Colliders, Phys. Rev. D 87 (2013) 054030 [arXiv:1211.6390] [INSPIRE].
J.M. Campbell, R.K. Ellis and C. Williams, http://mcfm.fnal.gov.
P. Nason, A new method for combining NLO QCD with shower Monte Carlo algorithms, JHEP 11 (2004) 040 [hep-ph/0409146] [INSPIRE].
S. Frixione, P. Nason and C. Oleari, Matching NLO QCD computations with Parton Shower simulations: the POWHEG method, JHEP 11 (2007) 070 [arXiv:0709.2092] [INSPIRE].
S. Frixione and B.R. Webber, Matching NLO QCD computations and parton shower simulations, JHEP 06 (2002) 029 [hep-ph/0204244] [INSPIRE].
S. Alioli, P. Nason, C. Oleari and E. Re, A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX, JHEP 06 (2010) 043 [arXiv:1002.2581] [INSPIRE].
H. Dreiner, D. Schmeier and J. Tattersall, Contact Interactions Probe Effective Dark Matter Models at the LHC, Europhys. Lett. 102 (2013) 51001 [arXiv:1303.3348] [INSPIRE].
B. Batell, J. Pradler and M. Spannowsky, Dark Matter from Minimal Flavor Violation, JHEP 08 (2011) 038 [arXiv:1105.1781] [INSPIRE].
U. Haisch and F. Kahlhoefer, On the importance of loop-induced spin-independent interactions for dark matter direct detection, JCAP 04 (2013) 050 [arXiv:1302.4454] [INSPIRE].
T. Lin, E.W. Kolb and L.-T. Wang, Probing dark matter couplings to top and bottom at the LHC, Phys. Rev. D 88 (2013) 063510 [arXiv:1303.6638] [INSPIRE].
M. Beltrán, D. Hooper, E.W. Kolb and Z.C. Krusberg, Deducing the nature of dark matter from direct and indirect detection experiments in the absence of collider signatures of new physics, Phys. Rev. D 80 (2009) 043509 [arXiv:0808.3384] [INSPIRE].
P. Agrawal, Z. Chacko, C. Kilic and R.K. Mishra, A Classification of Dark Matter Candidates with Primarily Spin-Dependent Interactions with Matter, arXiv:1003.1912 [INSPIRE].
J. March-Russell, J. Unwin and S.M. West, Closing in on asymmetric dark matter I: model independent limits for interactions with quarks, JHEP 08 (2012) 029 [arXiv:1203.4854] [INSPIRE].
I.M. Shoemaker and L. Vecchi, Unitarity and Monojet Bounds on Models for DAMA, CoGeNT and CRESST-II, Phys. Rev. D 86 (2012) 015023 [arXiv:1112.5457] [INSPIRE].
P.J. Fox, R. Harnik, R. Primulando and C.-T. Yu, Taking a Razor to Dark Matter Parameter Space at the LHC, Phys. Rev. D 86 (2012) 015010 [arXiv:1203.1662] [INSPIRE].
G. Busoni, A. De Simone, E. Morgante and A. Riotto, On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC, arXiv:1307.2253 [INSPIRE].
S. Profumo, W. Shepherd and T. Tait, The Pitfalls of Dark Crossings, arXiv:1307.6277 [INSPIRE].
O. Buchmueller, M.J. Dolan and C. McCabe, Beyond Effective Field Theory for Dark Matter Searches at the LHC, arXiv:1308.6799 [INSPIRE].
M.T. Frandsen, F. Kahlhoefer, A. Preston, S. Sarkar and K. Schmidt-Hoberg, LHC and Tevatron bounds on the dark matter direct detection cross-section for vector mediators, JHEP 07 (2012) 123 [arXiv:1204.3839] [INSPIRE].
A. Martin, W. Stirling, R. Thorne and G. Watt, Parton distributions for the LHC, Eur. Phys. J. C 63 (2009) 189 [arXiv:0901.0002] [INSPIRE].
M. Cacciari and G.P. Salam, Dispelling the N 3 myth for the k t jet-finder, Phys. Lett. B 641 (2006) 57 [hep-ph/0512210] [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, The anti-k(t) jet clustering algorithm, JHEP 04 (2008) 063 [arXiv:0802.1189] [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, FastJet User Manual, Eur. Phys. J. C 72 (2012) 1896 [arXiv:1111.6097] [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 physics and manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].
S. Frixione and G. Ridolfi, Jet photoproduction at HERA, Nucl. Phys. B 507 (1997) 315 [hep-ph/9707345] [INSPIRE].
A. Banfi and M. Dasgupta, Dijet rates with symmetric E(t) cuts, JHEP 01 (2004) 027 [hep-ph/0312108] [INSPIRE].
R. Thorne and R. Roberts, An ordered analysis of heavy flavor production in deep inelastic scattering, Phys. Rev. D 57 (1998) 6871 [hep-ph/9709442] [INSPIRE].
R. Thorne, A variable-flavor number scheme for NNLO, Phys. Rev. D 73 (2006) 054019 [hep-ph/0601245] [INSPIRE].
H.-L. Lai et al., New parton distributions for collider physics, Phys. Rev. D 82 (2010) 074024 [arXiv:1007.2241] [INSPIRE].
M. Aivazis, J.C. Collins, F.I. Olness and W.-K. Tung, Leptoproduction of heavy quarks. 2. A Unified QCD formulation of charged and neutral current processes from fixed target to collider energies, Phys. Rev. D 50 (1994) 3102 [hep-ph/9312319] [INSPIRE].
J.C. Collins, Hard scattering factorization with heavy quarks: A General treatment, Phys. Rev. D 58 (1998) 094002 [hep-ph/9806259] [INSPIRE].
R.D. Ball et al., Impact of Heavy Quark Masses on Parton Distributions and LHC Phenomenology, Nucl. Phys. B 849 (2011) 296 [arXiv:1101.1300] [INSPIRE].
R.D. Ball et al., Parton distributions with LHC data, Nucl. Phys. B 867 (2013) 244 [arXiv:1207.1303] [INSPIRE].
M. Cacciari, M. Greco and P. Nason, The p T spectrum in heavy flavor hadroproduction, JHEP 05 (1998) 007 [hep-ph/9803400] [INSPIRE].
S. Forte, E. Laenen, P. Nason and J. Rojo, Heavy quarks in deep-inelastic scattering, Nucl. Phys. B 834 (2010) 116 [arXiv:1001.2312] [INSPIRE].
J.C. Collins, F. Wilczek and A. Zee, Low-Energy Manifestations of Heavy Particles: Application to the Neutral Current, Phys. Rev. D 18 (1978) 242 [INSPIRE].
G. Rodrigo, Multigluonic scattering amplitudes of heavy quarks, JHEP 09 (2005) 079 [hep-ph/0508138] [INSPIRE].
S. Badger, J.M. Campbell and R. Ellis, QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations, JHEP 03 (2011) 027 [arXiv:1011.6647] [INSPIRE].
K. Hagiwara and D. Zeppenfeld, Helicity Amplitudes for Heavy Lepton Production in e + e − Annihilation, Nucl. Phys. B 274 (1986) 1 [INSPIRE].
K. Hagiwara and D. Zeppenfeld, Amplitudes for Multiparton Processes Involving a Current at e + e − , e ± p and Hadron Colliders, Nucl. Phys. B 313 (1989) 560 [INSPIRE].
D. Maître and P. Mastrolia, S@M, a Mathematica Implementation of the Spinor-Helicity Formalism, Comput. Phys. Commun. 179 (2008) 501 [arXiv:0710.5559] [INSPIRE].
G. Corcella et al., HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes), JHEP 01 (2001) 010 [hep-ph/0011363] [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, A brief introduction to PYTHIA 8.1, Comput. Phys. Commun. 178 (2008) 852 [arXiv:0710.3820] [INSPIRE].
M. Bahr et al., HERWIG++ physics and manual, Eur. Phys. J. C 58 (2008) 639 [arXiv:0803.0883] [INSPIRE].
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1310.4491
Rights and permissions
About this article
Cite this article
Haisch, U., Kahlhoefer, F. & Re, E. QCD effects in mono-jet searches for dark matter. J. High Energ. Phys. 2013, 7 (2013). https://doi.org/10.1007/JHEP12(2013)007
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP12(2013)007