Top mass determination, Higgs inflation, and vacuum stability

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Standard

Top mass determination, Higgs inflation, and vacuum stability. / Branchina, Vincenzo; Messina, Emanuele; Platania, Alessia.

I: Journal of High Energy Physics, Bind 2014, Nr. 9, 182, 09.2014.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Branchina, V, Messina, E & Platania, A 2014, 'Top mass determination, Higgs inflation, and vacuum stability', Journal of High Energy Physics, bind 2014, nr. 9, 182. https://doi.org/10.1007/JHEP09(2014)182

APA

Branchina, V., Messina, E., & Platania, A. (2014). Top mass determination, Higgs inflation, and vacuum stability. Journal of High Energy Physics, 2014(9), [182]. https://doi.org/10.1007/JHEP09(2014)182

Vancouver

Branchina V, Messina E, Platania A. Top mass determination, Higgs inflation, and vacuum stability. Journal of High Energy Physics. 2014 sep.;2014(9). 182. https://doi.org/10.1007/JHEP09(2014)182

Author

Branchina, Vincenzo ; Messina, Emanuele ; Platania, Alessia. / Top mass determination, Higgs inflation, and vacuum stability. I: Journal of High Energy Physics. 2014 ; Bind 2014, Nr. 9.

Bibtex

@article{0d39f5e555b0422aaf6d4e649be64982,

title = "Top mass determination, Higgs inflation, and vacuum stability",

abstract = "The possibility that new physics beyond the Standard Model (SM) appears only at the Planck scale MP is often considered. However, it is usually assumed that new physics interactions at MP do not affect the electroweak vacuum lifetime, so the latter is obtained neglecting these terms. According to the resulting stability phase diagram, for the current experimental values of the top and Higgs masses, our universe lives in a metastable state (with very long lifetime), near the edge of stability. However, we show that the stability phase diagram strongly depends on new physics and that, despite claims to the contrary, a more precise determination of the top (as well as of the Higgs) mass will not allow to discriminate between stability, metastability or criticality of the electroweak vacuum. At the same time, we show that the conditions needed for the realization of Higgs inflation scenarios (all obtained neglecting new physics) are too sensitive to the presence of new interactions at MP. Therefore, Higgs inflation scenarios require very severe fine tunings that cast serious doubts on these models.",

keywords = "Beyond Standard Model, Higgs Physics, Standard Model",

author = "Vincenzo Branchina and Emanuele Messina and Alessia Platania",

note = "Publisher Copyright: {\textcopyright} 2014, The Author(s).",

year = "2014",

month = sep,

doi = "10.1007/JHEP09(2014)182",

language = "English",

volume = "2014",

journal = "Journal of High Energy Physics (Online)",

issn = "1126-6708",

publisher = "Springer",

number = "9",

}

RIS

TY - JOUR

T1 - Top mass determination, Higgs inflation, and vacuum stability

AU - Branchina, Vincenzo

AU - Messina, Emanuele

AU - Platania, Alessia

PY - 2014/9

Y1 - 2014/9

N2 - The possibility that new physics beyond the Standard Model (SM) appears only at the Planck scale MP is often considered. However, it is usually assumed that new physics interactions at MP do not affect the electroweak vacuum lifetime, so the latter is obtained neglecting these terms. According to the resulting stability phase diagram, for the current experimental values of the top and Higgs masses, our universe lives in a metastable state (with very long lifetime), near the edge of stability. However, we show that the stability phase diagram strongly depends on new physics and that, despite claims to the contrary, a more precise determination of the top (as well as of the Higgs) mass will not allow to discriminate between stability, metastability or criticality of the electroweak vacuum. At the same time, we show that the conditions needed for the realization of Higgs inflation scenarios (all obtained neglecting new physics) are too sensitive to the presence of new interactions at MP. Therefore, Higgs inflation scenarios require very severe fine tunings that cast serious doubts on these models.

AB - The possibility that new physics beyond the Standard Model (SM) appears only at the Planck scale MP is often considered. However, it is usually assumed that new physics interactions at MP do not affect the electroweak vacuum lifetime, so the latter is obtained neglecting these terms. According to the resulting stability phase diagram, for the current experimental values of the top and Higgs masses, our universe lives in a metastable state (with very long lifetime), near the edge of stability. However, we show that the stability phase diagram strongly depends on new physics and that, despite claims to the contrary, a more precise determination of the top (as well as of the Higgs) mass will not allow to discriminate between stability, metastability or criticality of the electroweak vacuum. At the same time, we show that the conditions needed for the realization of Higgs inflation scenarios (all obtained neglecting new physics) are too sensitive to the presence of new interactions at MP. Therefore, Higgs inflation scenarios require very severe fine tunings that cast serious doubts on these models.

KW - Beyond Standard Model

KW - Higgs Physics

KW - Standard Model

UR - http://www.scopus.com/inward/record.url?scp=84919905414&partnerID=8YFLogxK

U2 - 10.1007/JHEP09(2014)182

DO - 10.1007/JHEP09(2014)182

M3 - Journal article

AN - SCOPUS:84919905414

VL - 2014

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

SN - 1126-6708

IS - 9

M1 - 182

ER -

ID: 389021061