Abstract
Many new physics models with strongly interacting sectors predict a mass hierarchy between the lightest vector meson and the lightest pseudoscalar mesons. We examine the power of jet substructure tools to extend the 7 TeV LHC sensitivity to these new states for the case of QCD octet mesons, considering both two gluon and two b-jet decay modes for the pseudoscalar mesons. We develop both a simple dijet search using only the jet mass and a more sophisticated jet substructure analysis, both of which can discover the composite octets in a dijet-like signature. The reach depends on the mass hierarchy between the vector and pseudoscalar mesons. We find that for the pseudoscalar-to-vector meson mass ratio below approximately 0.2 a simple dijet analysis with only the jet mass variable provides the best discovery limit; for a ratio between 0.2 and the QCD-like value of 0.3, the full jet substructure analysis has the best discovery potential; for a ratio above approximately 0.3, the standard four-jet analysis is more suitable.
| Original language | English (US) |
|---|---|
| Article number | 067 |
| Journal | Journal of High Energy Physics |
| Volume | 2012 |
| Issue number | 7 |
| DOIs | |
| State | Published - Aug 6 2012 |
| Externally published | Yes |
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Keywords
- Beyond standard model
- Jets
- Technicolor and composite models
ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Composite octet searches with jet substructure. / Bai, Yang; Shelton, Jessie.
In: Journal of High Energy Physics, Vol. 2012, No. 7, 067, 06.08.2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Composite octet searches with jet substructure
AU - Bai, Yang
AU - Shelton, Jessie
PY - 2012/8/6
Y1 - 2012/8/6
N2 - Many new physics models with strongly interacting sectors predict a mass hierarchy between the lightest vector meson and the lightest pseudoscalar mesons. We examine the power of jet substructure tools to extend the 7 TeV LHC sensitivity to these new states for the case of QCD octet mesons, considering both two gluon and two b-jet decay modes for the pseudoscalar mesons. We develop both a simple dijet search using only the jet mass and a more sophisticated jet substructure analysis, both of which can discover the composite octets in a dijet-like signature. The reach depends on the mass hierarchy between the vector and pseudoscalar mesons. We find that for the pseudoscalar-to-vector meson mass ratio below approximately 0.2 a simple dijet analysis with only the jet mass variable provides the best discovery limit; for a ratio between 0.2 and the QCD-like value of 0.3, the full jet substructure analysis has the best discovery potential; for a ratio above approximately 0.3, the standard four-jet analysis is more suitable.
AB - Many new physics models with strongly interacting sectors predict a mass hierarchy between the lightest vector meson and the lightest pseudoscalar mesons. We examine the power of jet substructure tools to extend the 7 TeV LHC sensitivity to these new states for the case of QCD octet mesons, considering both two gluon and two b-jet decay modes for the pseudoscalar mesons. We develop both a simple dijet search using only the jet mass and a more sophisticated jet substructure analysis, both of which can discover the composite octets in a dijet-like signature. The reach depends on the mass hierarchy between the vector and pseudoscalar mesons. We find that for the pseudoscalar-to-vector meson mass ratio below approximately 0.2 a simple dijet analysis with only the jet mass variable provides the best discovery limit; for a ratio between 0.2 and the QCD-like value of 0.3, the full jet substructure analysis has the best discovery potential; for a ratio above approximately 0.3, the standard four-jet analysis is more suitable.
KW - Beyond standard model
KW - Jets
KW - Technicolor and composite models
UR - http://www.scopus.com/inward/record.url?scp=84864459268&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864459268&partnerID=8YFLogxK
U2 - 10.1007/JHEP07(2012)067
DO - 10.1007/JHEP07(2012)067
M3 - Article
AN - SCOPUS:84864459268
VL - 2012
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1126-6708
IS - 7
M1 - 067
ER -