Abstract
We have analyzed the prospect of detecting a Higgs signal in mSUGRA/cMSSM based Supersymmetric (SUSY) model via chargino-neutralino (\({\tilde{\chi}}^{\pm}_{1}\tilde{\chi}^{0}_{2}\)) production at 8 TeV and 14 TeV LHC energies. The signal is studied in the channel following the decays, \({\tilde{\chi}}^{\pm}_{1} \to W^{\pm} \tilde{\chi}^{0}_{1}\), \(\tilde{\chi}^{0}_{2} \to \tilde{\chi}^{0}_{1} h\) and \(h \to b \bar{b}\). In this analysis reconstruction of the Higgs mass out of two b jets plays a very crucial role in determining the signal to background ratio. We follow two techniques to reconstruct the Higgs mass: (A) adding momenta of two identified b jets, (B) jet substructure technique. In addition, imposing a certain set of selection cuts we observe that the significance is better for the method (B). We find that a signal can be observed for the Higgs mass ∼125 GeV with an integrated luminosity 100 fb−1 for both 8 TeV and 14 TeV LHC energies.
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Notes
Note that we have taken the finite width effects of W boson into account in our simulation. This results in a tail in the distribution in processes like Wh and \(t\bar{t}\). This forced us to opt for a higher value for selection cut.
References
S. Chatrchyan et al. (The CMS Collaboration), arXiv:1207.7235 [hep-ex]
G. Aad et al. (The ATLAS Collaboration), arXiv:1207.7214
K. Nakamura et al. (Particle Data Group), J. Phys. G 37, 075021 (2010)
A. Djouadi, Phys. Rep. 459, 1 (2008). arXiv:hep-ph/0503173, and references therein
H. Baer, V. Barger, A. Mustafayev, Phys. Rev. D 85 075010 (2012). arXiv:1112.3017
A. Arbey, M. Battaglia, A. Djouadi, F. Mahmoudi, J. Quevillon Phys. Lett. B 708, 162–169 (2012). arXiv:1112.3028
S. Akula, B. Altunkaynak, D. Feldman, P. Nath, G. Peim, arXiv:1112.3645
The CMS Collaboration, CMS-PAS-SUS-:12-005 (2012)
G. Aad et al. (ATLAS Collaboration), arXiv:1206.1760 [hep-ex]
H. Baer, M. Bisset, X. Tata, J. Woodside, Phys. Rev. D 46, 303 (1992)
H. Baer, M. Bisset, C. Kao, X. Tata, Phys. Rev. D 50, 316 (1994)
A. Datta, A. Djouadi, M. Guchait, Y. Mambrini, Phys. Rev. D 65, 015007 (2002)
A. Datta, A. Djouadi, M. Guchait, F. Moortgat, Nucl. Phys. B 681, 31 (2004)
S. Gori, P. Schwaller, C.E.M. Wagner, Phys. Rev. D 83, 115022 (2011)
S. Mrenna, arXiv:1110.4078
H. Baer, V. Barger, S. Kraml, A. Lessa, W. Sreethawong, X. Tata, arXiv:1201.5382
H. Baer, V. Barger, A. Lessa, W. Sreethawong, X. Tata, arXiv:1201.2949
P. Byakti, D. Ghosh, arXiv:1204.0415
S. Heinemeyer, F.v.d. Pahlen, H. Rzehak, C. Schappacher, arXiv:1201.6305
A. Arbey, F. Mahmoudi, Comput. Phys. Commun. 182, 1582 (2011)
T. Sjostrand, S. Mrenna, P.Z. Skands, J. High Energy Phys. 05, 026 (2006). arXiv:hep-ph/0603175
M.L. Mangano, M. Moretti, F. Piccinini, R. Pittau, A.D. Polosa, J. High Energy Phys. 0307, 001 (2003)
S. Hoche, F. Kraus, N. Lavesson, L. Lonnbald, M. Mangano, arXiv:hep-ph/0602031
M. Cacciari, G.P. Salam, G. Soyez, Phys. Lett. B 641, 57 (2006). arXiv:hep-ph/0512210
Y.L. Dokshitzer, G.D. Leder, S. Moretti, B.R. Webber, J. High Energy Phys. 9708, 001 (1997). arXiv:hep-ph/9707323
H.L. Lai et al. (CTEQ Collaboration), Eur. Phys. J. C 12, 375 (2000)
A. Djouadi, M.M. Muhlleitner, M. Spira, Acta Phys. Pol. B 38, 635–644 (2007)
CMS Collaboration Report NO.CMS-PAS-BTV-11-001
M. Guchait, D. Sengupta, Phys. Rev. D 84, 055010 (2011). arXiv:1102.4785
D. Ghosh, M. Guchait, S. Raychaudhuri, D. Sengupta, arXiv:1205.2283
R.M. Chatterjee, M. Guchait, D. Sengupta, arXiv:1206.5770
A. Abdesallam et al., Eur. Phys. J. C 71, 1661 (2011)
J.M. Butterworth, A.R. Davison, M. Rubin, G.P. Salam, Phys. Rev. Lett. 100, 242001 (2008)
A. Knutsson, talk given in MB & UE meeting, CERN, 17th June, 2011
W. Beenakker, R. Hopker, M. Spira, P. Zerwas, Nucl. Phys. B 492, 51 (1997)
N. Kidonakis, arXiv:1109.3231
D. Ghosh, M. Guchait, D. Sengupta, in preparation
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Ghosh, D., Guchait, M. & Sengupta, D. Higgs signal in chargino-neutralino production at the LHC. Eur. Phys. J. C 72, 2141 (2012). https://doi.org/10.1140/epjc/s10052-012-2141-8
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DOI: https://doi.org/10.1140/epjc/s10052-012-2141-8