The second Higgs at the lifetime frontier
Abstract We assess the current coverage and the future discovery potential of LHC searches for heavy Higgs bosons decaying into long-lived particles (LLPs), focusing primarily on the production of pairs of LLPs with hadronic final states. These signatures are generic in dark sectors where a heavy sc...
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Online Access: | http://link.springer.com/article/10.1007/JHEP07(2020)029 |
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doaj-99ce8f4a65624d399f2b8b2882b74b062020-11-25T02:41:22ZengSpringerOpenJournal of High Energy Physics1029-84792020-07-012020713910.1007/JHEP07(2020)029The second Higgs at the lifetime frontierSamuel Alipour-Fard0Nathaniel Craig1Stefania Gori2Seth Koren3Diego Redigolo4Department of Physics, University of CaliforniaDepartment of Physics, University of CaliforniaSanta Cruz Institute for Particle Physics, University of California, Santa CruzDepartment of Physics, University of CaliforniaRaymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv UniversityAbstract We assess the current coverage and the future discovery potential of LHC searches for heavy Higgs bosons decaying into long-lived particles (LLPs), focusing primarily on the production of pairs of LLPs with hadronic final states. These signatures are generic in dark sectors where a heavy scalar decays into pairs of lighter states which subsequently mix with the Standard Model Higgs. We show that a handful of existing analyses provide broad coverage of LLP decay lengths ranging from millimeters to tens of meters, and explore the complementarity between searches for displaced and prompt final states in several simplified models. For both heavy singlet and heavy doublet scalars, LLP searches typically provide the leading sensitivity in current data and exhibit the strongest discovery potential in future LHC runs. We further translate the impact of these searches into the parameter space of various Twin Higgs models, demonstrating that LLP searches are a promising avenue for discovering a Twin Higgs with displaced decays. Finally, we propose a variety of additional search channels that would improve coverage of the second Higgs at the lifetime frontier.http://link.springer.com/article/10.1007/JHEP07(2020)029Beyond Standard ModelHiggs Physics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Samuel Alipour-Fard Nathaniel Craig Stefania Gori Seth Koren Diego Redigolo |
spellingShingle |
Samuel Alipour-Fard Nathaniel Craig Stefania Gori Seth Koren Diego Redigolo The second Higgs at the lifetime frontier Journal of High Energy Physics Beyond Standard Model Higgs Physics |
author_facet |
Samuel Alipour-Fard Nathaniel Craig Stefania Gori Seth Koren Diego Redigolo |
author_sort |
Samuel Alipour-Fard |
title |
The second Higgs at the lifetime frontier |
title_short |
The second Higgs at the lifetime frontier |
title_full |
The second Higgs at the lifetime frontier |
title_fullStr |
The second Higgs at the lifetime frontier |
title_full_unstemmed |
The second Higgs at the lifetime frontier |
title_sort |
second higgs at the lifetime frontier |
publisher |
SpringerOpen |
series |
Journal of High Energy Physics |
issn |
1029-8479 |
publishDate |
2020-07-01 |
description |
Abstract We assess the current coverage and the future discovery potential of LHC searches for heavy Higgs bosons decaying into long-lived particles (LLPs), focusing primarily on the production of pairs of LLPs with hadronic final states. These signatures are generic in dark sectors where a heavy scalar decays into pairs of lighter states which subsequently mix with the Standard Model Higgs. We show that a handful of existing analyses provide broad coverage of LLP decay lengths ranging from millimeters to tens of meters, and explore the complementarity between searches for displaced and prompt final states in several simplified models. For both heavy singlet and heavy doublet scalars, LLP searches typically provide the leading sensitivity in current data and exhibit the strongest discovery potential in future LHC runs. We further translate the impact of these searches into the parameter space of various Twin Higgs models, demonstrating that LLP searches are a promising avenue for discovering a Twin Higgs with displaced decays. Finally, we propose a variety of additional search channels that would improve coverage of the second Higgs at the lifetime frontier. |
topic |
Beyond Standard Model Higgs Physics |
url |
http://link.springer.com/article/10.1007/JHEP07(2020)029 |
work_keys_str_mv |
AT samuelalipourfard thesecondhiggsatthelifetimefrontier AT nathanielcraig thesecondhiggsatthelifetimefrontier AT stefaniagori thesecondhiggsatthelifetimefrontier AT sethkoren thesecondhiggsatthelifetimefrontier AT diegoredigolo thesecondhiggsatthelifetimefrontier AT samuelalipourfard secondhiggsatthelifetimefrontier AT nathanielcraig secondhiggsatthelifetimefrontier AT stefaniagori secondhiggsatthelifetimefrontier AT sethkoren secondhiggsatthelifetimefrontier AT diegoredigolo secondhiggsatthelifetimefrontier |
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1724778772531511296 |