TITLE

# One-Loop Corrections for Production of a Light neutral MSSM Higgs Boson with a Pair of Neutralinos at the e+e- Linear Collider

AUTHOR(S)
Seif, Shymaa. M.; Azim, Tarek. A.; Abdul-Magead, Ibrah. A.
PUB. DATE
July 2014
SOURCE
Australian Journal of Basic & Applied Sciences;Jul2014, Vol. 8 Issue 10, p52
SOURCE TYPE
DOC. TYPE
Article
ABSTRACT
Background: Linear collider is a clean environment to search for supersymmetric particles such as neutralinos and in turn achieve the Minimal Supersymmetric Model (MSSM), since the mass of neutralinos is among the precision observables with lots of information on the SUSY-breaking structure. The relations between the particle masses and the SUSY parameters are important theoretical quantities for precision calculations. In view of the experimental prospects, it is inevitable to include higher-order terms in the calculation of the measured quantities in order to achieve theoretical predictions matching the experimental accuracy. Thus, one-loop calculations for our process are studied using the on-shell renormalization scheme. Objective: To study the lowest order and the one-loop corrections to the production of a light neutral minimal supersymmetric standard model Higgs boson (h0) with a pair of lightest neutralinos (Ï‡ 10) in e+e- collisions at the Linear Collider. Results: The one-loop correction increases the cross section by about 42% at âˆšs = 500 GeV and this increase reaches 39% at âˆšs = 2000 GeV. The Born cross section reaches its maximum value 8 Ã— 10 -8 pb at âˆšs = 1100 GeV, while the maximum value of the cross section for one-loop level is almost 1.1 Ã— 10-7 pb at âˆšs = 1100 GeV. The effects of the MSSM parameters on the calculations of the lightest neutralino Ï‡ 10 and neutral light Higgs boson h0, shows significant dependence on the considered parameters which in turn give a frame of searching for Ï‡ 10 and h0. Conclusion: The one-loop corrections to the lowest order show large contribution and improvement to the cross section values, where an important contribution coming from QED calculations that should be taken into account. The corrections are typically quite large; and therefore, one has to consider higher orders with a resummation of the leading terms to get precise results.
ACCESSION #
97368461

## Related Articles

• MEETING HIGGS AND ELECTROWEAK PRECISION OBSERVABLES WITH R-SYMMETRIC SUSY. DIESSNER, PHILIP; KOTLARSKI, WOJCIECH // Acta Physica Polonica B;Nov2015, Vol. 46 Issue 11, p2179

We briefly review results of a recent calculation of the leading two-loop corrections to the Higgs boson mass in the Minimal R-symmetric Supersymmetric Standard Model.

• Probing new physics from top-charm associated productions at Linear Colliders. Cao, Junjie; Guoli Liu; Jin Min Yang // European Physical Journal C -- Particles & Fields;Jun2005, Vol. 41 Issue 3, p381

The top-charm associated productions via e + e-, $e^- \gamma$ and $\gamma \gamma$ collisions at linear colliders, which are extremely suppressed in the standard model (SM), could be significantly enhanced in some extensions of the SM. In this article we calculate the full contribution of the...

• A FORTRAN code for Î³Î³â†’ZZ in SM and MSSM. Diakonidis, T.; Gounaris, G.J.; Layssac, J. // European Physical Journal C -- Particles & Fields;Mar2007, Vol. 50 Issue 1, p47

Through the present paper, the code gamgamZZ is presented, which may be used to calculate all possible observables related to the process Î³Î³â†’ZZ, in either the standard model, or the minimal supersymmetric standard model with real parameters.

• Quasifixed-Point Scenario in a Modified Nonminimal Supersymmetric Standard Model. Nevzorov, R. B.; Trusov, M. A. // Physics of Atomic Nuclei;Feb2002, Vol. 65 Issue 2, p335

The modified next-to-minimal supersymmetric standard model is the simplest model that is obtained as an extension of the minimal supersymmetric standard model and which is compatible with the LEP II experimental constraint on the mass of the lightest Higgs boson at tan Î² âˆ¼ 1. The...

• Higgs Bosons in the Simplest SUSY Models. Nevzorov, R. B.; Ter-Martirosyan, K. A.; Trusov, M. A. // Physics of Atomic Nuclei;Feb2002, Vol. 65 Issue 2, p285

Nowadays, in the MSSM, the moderate values of tan Î² are almost excluded by the LEP II lower bound on the mass of the lightest Higgs boson. In the next-to-minimal supersymmetric standard model (NMSSM), the theoretical upper bound on it increases and reaches a maximal value in the limit of...

• The Higgs mass beyond the CMSSM. Ellis, John; Luo, Feng; Olive, Keith; Sandick, Pearl // European Physical Journal C -- Particles & Fields;Apr2013, Vol. 73 Issue 4, p1

The apparent discovery of a Higgs boson with mass âˆ¼125 GeV has had a significant impact on the constrained minimal supersymmetric extension of the Standard Model (the CMSSM). Much of the low-mass parameter space in the CMSSM has been excluded by supersymmetric particle searches at the LHC...

• SUSY dark matter(s). Catena, Riccardo; Covi, Laura // European Physical Journal C -- Particles & Fields;May2014, Vol. 74 Issue 5, p1

We review the status of different dark-matter candidates in the context of supersymmetric models, in particular the neutralino as a realization of the WIMP mechanism and the gravitino. We give a summary of the recent bounds in direct and indirect detection and also of the LHC searches relevant...

• On Higgs-extended MSSM models. Laamara, R.; Ennadifi, S.; Loualidi, M. // Journal of Experimental & Theoretical Physics;Jul2014, Vol. 119 Issue 1, p49

Motivated by the LHC results revealing the SM scalar sector as well as by its possible revision, we consider an MSSM scalar extension consisting of two Higgs triplets generating the observed neutrino and Higgs masses. The latter constrains their suppressed vevs and sizable couplings, which...

• Searching the sbottom in the four lepton channel at the LHC. Ghosh, Diptimoy; Sengupta, Dipan // European Physical Journal C -- Particles & Fields;Mar2013, Vol. 73 Issue 3, p1

Direct searches at the Large Hadron Collider (LHC) have pushed the lower limits on the masses of the gluinos ( $\tilde{g}$) and the squarks of the first two generations ( $\tilde{q}$) to the TeV range. On the other hand, the limits are rather weak for the third generation squarks and masses...

Share