2015:groups:higgs:morehiggs:scalartt
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2015:groups:higgs:morehiggs:scalartt [2015/06/13 17:00] andrey.katz |
2015:groups:higgs:morehiggs:scalartt [2015/06/17 08:41] aram.apyan |
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| **Responsible:** Ken Mimasu | **Responsible:** Ken Mimasu | ||
| - | **Members:** Jose Mi No, Chris Pollard, Sanjoy Biswas, Adam Falkowski, Aurelio Juste, Andrey Katz | + | **Members:** Jose Mi No, Chris Pollard, Sanjoy Biswas, Adam Falkowski, Aurelio Juste, Andrey Katz, Aram Apyan |
| **Idea** | **Idea** | ||
| Line 18: | Line 18: | ||
| Other channels? | Other channels? | ||
| * Associated production with a Z(gamma?) via t/b loops would change the background to ttZ(gamma), which may have more manageable rates - but what would be our signal cross section in this case? | * Associated production with a Z(gamma?) via t/b loops would change the background to ttZ(gamma), which may have more manageable rates - but what would be our signal cross section in this case? | ||
| - | * bb/tt associate production leading to 4 top or bbtt final states | + | * bb/tt associate production leading to 4 top or bbtt final states. Current limits from 8 TeV are of order 20 fb, close to the predicted production cross section for low A0 masses ~ 400 GeV. |
| * Associated production with a single top (overtakes ttH around mH~ 300 GeV) | * Associated production with a single top (overtakes ttH around mH~ 300 GeV) | ||
| + | |||
| + | **Associated production** | ||
| + | |||
| + | This appears to be one of the more promising scenarios for 13 TeV. A projection study would be interesting. | ||
| + | The figure below is the LO cross section for A_0 production in association with ttbar at 13 TeV as a function of the mass for tan beta = 1. | ||
| + | |||
| + | {{:2015:groups:higgs:morehiggs:tta0.png?direct&200|}} | ||
| + | |||
| + | An summary of production cross sections for A0/H0 in the different production modes (ttH [Chris], bbH [Adam], tHj [Ken], tHW [Josemi], tbH+ [Aurelio, Aram]) might be an instructive thing to show. | ||
| + | |||
| + | Show as a function of mass for tan beta=1 in alignment for type I, II. | ||
| **Literature** | **Literature** | ||
| + | |||
| + | [[http://arxiv.org/pdf/1405.7570v2.pdf]] | ||
| + | |||
| + | Djouadi et al. discuss A/H->tt in the context of hMSSM (simple and 'model independent' approach). Low tan beta and above the threshold A/H->tt becomes the dominant decay and production cross section is still significant. They stress that this study is needed to fully cover the M_A and tan beta parameter space. | ||
| [[http://arxiv.org/abs/hep-ph/9404359]] | [[http://arxiv.org/abs/hep-ph/9404359]] | ||
2015/groups/higgs/morehiggs/scalartt.txt ยท Last modified: 2015/06/18 14:51 by ken.mimasu
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