Exclusion of heavy, broad resonances from precise measurements of WZ and VH final states at the LHC
| Popis: | A novel search for heavy vector resonances in the $H\rightarrow b\bar{b}$ and $Z\rightarrow b\bar{b}$ final states in association with a leptonically decaying $V$ ($Z$ or $W$) and $W$-only respectively, is proposed. It is argued that excesses with respect to the Standard Model prediction should be observed in all final states (0, 1 or 2 leptons), with the 1-lepton final state being the strongest. Since the relative strengths of these excesses depend on branching ratios and efficiencies, this is a clear signal for the presence of heavy resonances or their low mass tails. A general vector-triplet model is used to explore the discovery potential as a function of the resonance mass and width. Recent Higgs to $b\bar{b}$ observation data reported by the experiments ATLAS and CMS are used to test the model. Current limits are extended to resonance widths over mass as large as 9%. Comment: Accepted by European Physical Journal C |
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| Jazyk: | English |
| ISSN: | 1434-6052 1434-6044 |
| DOI: | 10.1140/epjc/s10052-019-6858-5 |
| DOI: | 10.1140/epjc/s10052-019-6858-5⟩ |
| Přístupová URL adresa: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41a0763b0bd8cae308935dec59446c16 http://link.springer.com/article/10.1140/epjc/s10052-019-6858-5 |
| Rights: | OPEN |
| Přírůstkové číslo: | edsair.doi.dedup.....41a0763b0bd8cae308935dec59446c16 |
| Autor: | Stathes Paganis, You-ying Li, Rosy Nicolaidou |
| Přispěvatelé: | Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Particle physics
p p: scattering Z0 --> bottom anti-bottom Physics and Astronomy (miscellaneous) Higgs particle: decay Physics beyond the Standard Model resonance: vector FOS: Physical sciences lcsh:Astrophysics W: leptonic decay 01 natural sciences Computer Science::Digital Libraries resonance: heavy Z0: production High Energy Physics - Phenomenology (hep-ph) W: production 0103 physical sciences lcsh:QB460-466 Higgs particle --> bottom anti-bottom lcsh:Nuclear and particle physics. Atomic energy. Radioactivity 010306 general physics Observation data Engineering (miscellaneous) resonance: mass Physics Large Hadron Collider 010308 nuclear & particles physics new physics High Energy Physics::Phenomenology Resonance High Energy Physics - Phenomenology CERN LHC Coll [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] Z0: leptonic decay Higgs boson lepton: final state lcsh:QC770-798 High Energy Physics::Experiment Low Mass Lepton |
| Zdroj: | European Physical Journal C: Particles and Fields, Vol 79, Iss 4, Pp 1-8 (2019) Eur.Phys.J.C Eur.Phys.J.C, 2019, 79 (4), pp.348. ⟨10.1140/epjc/s10052-019-6858-5⟩ European Physical Journal European Physical Journal C: Particles and Fields European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2019, 79 (4), pp.348. ⟨10.1140/epjc/s10052-019-6858-5⟩ |
| ISSN: | 1434-6052 1434-6044 |
| DOI: | 10.1140/epjc/s10052-019-6858-5 |
| Popis: | A novel search for heavy vector resonances in the $H\rightarrow b\bar{b}$ and $Z\rightarrow b\bar{b}$ final states in association with a leptonically decaying $V$ ($Z$ or $W$) and $W$-only respectively, is proposed. It is argued that excesses with respect to the Standard Model prediction should be observed in all final states (0, 1 or 2 leptons), with the 1-lepton final state being the strongest. Since the relative strengths of these excesses depend on branching ratios and efficiencies, this is a clear signal for the presence of heavy resonances or their low mass tails. A general vector-triplet model is used to explore the discovery potential as a function of the resonance mass and width. Recent Higgs to $b\bar{b}$ observation data reported by the experiments ATLAS and CMS are used to test the model. Current limits are extended to resonance widths over mass as large as 9%. Comment: Accepted by European Physical Journal C |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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