Distinguishing <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>WH</mi></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Wb</mi><mrow><mrow><mover><mrow><mi>b</mi></mrow><mrow><mi>¯</mi></mrow></mover></mrow></mrow></math></span> production at the Fermilab Tevatron

Stephen Parke; Siniša Veseli

doi:10.1103/PhysRevD.60.093003

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Distinguishing $WH$ and $Wb \bar{b}$ production at the Fermilab Tevatron

Stephen Parke and Siniša Veseli

Theoretical Physics Department, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510

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Phys. Rev. D 60, 093003 – Published 6 October, 1999

DOI: https://doi.org/10.1103/PhysRevD.60.093003

Abstract

The production of a Higgs boson in association with a W boson is the most likely process for the discovery of a light Higgs boson at the Fermilab Tevatron. Since it decays primarily to b-quark pairs, the principal background for this associated Higgs boson production process is $Wb \bar{b},$ where the $b \bar{b}$ pair comes from the splitting of an off mass shell gluon. In this paper we investigate whether the spin angular correlations of the final state particles can be used to separate the Higgs signal from the $Wb \bar{b}$ background. We develop a general numerical technique which allows one to find a spin basis optimized according to a given criterion, and also give a new algorithm for reconstructing the W longitudinal momentum which is suitable for the $WH$ and $Wb \bar{b}$ processes.

References (14)

D. Carlen, ICHEP98, Vancouver, 1998; D. Treille, ibid.
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ATLAS Technical Proposal No. CERN/LHCC 94-43, 1994; CMS Technical Proposal No. CERN/LHCC 94-38, 1994.
G. Mahlon and S. Parke, Phys. Rev. D 58, 054015 (1998).
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W.H. Press, S.A. Teukolsky, W.T. Vetterling, and B.P. Flannery, Numerical Recipes in C, 2nd ed. (Cambridge University Press, Cambridge, England, 1992).
A.D. Martin, R.G. Roberts, and W.J. Stirling, Phys. Lett. B 387, 419 (1996).
R.K. Ellis and S. Veseli, Phys. Rev. D 60, 011501 (1999).
S. Kim, S. Kuhlmann and W.M. Yao, presented at 1996 DPF/DPB Summer Study on New Directions for High-energy Physics (Snowmass 96), Snowmass, CO, 1996; P. Agrawal, D. Bowser-Chao, and K. Cheung, Phys. Rev. D 51, 6114 (1995).

[c1] D. Carlen, ICHEP98, Vancouver, 1998; D. Treille, ibid.

[c2] A. Stange, W. Marciano, and S. Willenbrock, Phys. Rev. D 49, 1354 (1994); ibid.50, 4491 (1994); S. Kuhlmann, TeV2000 report.

[c3] ATLAS Technical Proposal No. CERN/LHCC 94-43, 1994; CMS Technical Proposal No. CERN/LHCC 94-38, 1994.

[c4] G. Mahlon and S. Parke, Phys. Rev. D 58, 054015 (1998).

[c5] S. Parke and Y. Shadmi, Phys. Lett. B 387, 199 (1996).

[c6] Z. Kunszt and W.J. Stirling, Phys. Lett. B 242, 507 (1990).

[c7] G.P. Lepage, J. Comput. Phys. 27, 192 (1978); “VEGAS: An Adaptive Multidimensional Integration Program,” Report No. CLNS-80/447, 1980.

[c8] S. Veseli, Comput. Phys. Commun. 108, 9 (1998).

[c9] R. Kreckel, Comput. Phys. Commun. 106, 258 (1997).

[c10] J.A. Nelder and R. Mead, Comput. J. (UK) 7, 308 (1965).

[c11] W.H. Press, S.A. Teukolsky, W.T. Vetterling, and B.P. Flannery, Numerical Recipes in C, 2nd ed. (Cambridge University Press, Cambridge, England, 1992).

[c12] A.D. Martin, R.G. Roberts, and W.J. Stirling, Phys. Lett. B 387, 419 (1996).

[c13] R.K. Ellis and S. Veseli, Phys. Rev. D 60, 011501 (1999).

[c14] S. Kim, S. Kuhlmann and W.M. Yao, presented at 1996 DPF/DPB Summer Study on New Directions for High-energy Physics (Snowmass 96), Snowmass, CO, 1996; P. Agrawal, D. Bowser-Chao, and K. Cheung, Phys. Rev. D 51, 6114 (1995).

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Distinguishing $WH$ and $Wb \bar{b}$ production at the Fermilab Tevatron

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Distinguishing WH and Wbb¯ production at the Fermilab Tevatron

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References (14)

Distinguishing $WH$ and $Wb \bar{b}$ production at the Fermilab Tevatron