What can a heavy U(1)(B-L) Z ' boson do to the muon (g-2)(mu) anomaly and to a new Higgs boson mass?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00539474" target="_blank" >RIV/61389005:_____/21:00539474 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1674-1137/abc16a" target="_blank" >https://doi.org/10.1088/1674-1137/abc16a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1674-1137/abc16a" target="_blank" >10.1088/1674-1137/abc16a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

What can a heavy U(1)(B-L) Z ' boson do to the muon (g-2)(mu) anomaly and to a new Higgs boson mass?

Popis výsledku v původním jazyce

The minimal U(1)(B-L) extension of the Standard Model (B-L-SM) offers an explanation for neutrino mass generation via a seesaw mechanism, it also offers two new physics states, namely an extra Higgs boson and a new Z' gauge boson. The emergence of a second Higgs particle as well as a new Z' gauge boson, both linked to the breaking of a local U(1)(B-L) symmetry, makes the B-L-SM rather constrained by direct searches in Large Hadron Collider (LHC) experiments. We investigate the phenomenological status of the B-L-SM by confronting the new physics predictions with the LHC and electroweak precision data. Taking into account the current bounds from direct LHC searches, we demonstrate that the prediction for the muon (g - 2)(mu) anomaly in the B-L-SM yields at most a contribution of approximately 8.9 x 10(-12), which represents a tension of 3.28 standard deviations, with the current uncertainty, by means of a Z' boson if its mass is in the range of 6.3 to 6.5 TeV, within the reach of future LHC runs. This means that the B-L-SM, with heavy yet allowed Z' boson mass range, in practice, does not resolve the tension between the observed anomaly in the muon (g - 2)(mu) and the theoretical prediction in the Standard Model. Such a heavy Z' boson also implies that the minimal value for the new Higgs mass is of the order of 400 GeV.

Název v anglickém jazyce

What can a heavy U(1)(B-L) Z ' boson do to the muon (g-2)(mu) anomaly and to a new Higgs boson mass?

Popis výsledku anglicky

The minimal U(1)(B-L) extension of the Standard Model (B-L-SM) offers an explanation for neutrino mass generation via a seesaw mechanism, it also offers two new physics states, namely an extra Higgs boson and a new Z' gauge boson. The emergence of a second Higgs particle as well as a new Z' gauge boson, both linked to the breaking of a local U(1)(B-L) symmetry, makes the B-L-SM rather constrained by direct searches in Large Hadron Collider (LHC) experiments. We investigate the phenomenological status of the B-L-SM by confronting the new physics predictions with the LHC and electroweak precision data. Taking into account the current bounds from direct LHC searches, we demonstrate that the prediction for the muon (g - 2)(mu) anomaly in the B-L-SM yields at most a contribution of approximately 8.9 x 10(-12), which represents a tension of 3.28 standard deviations, with the current uncertainty, by means of a Z' boson if its mass is in the range of 6.3 to 6.5 TeV, within the reach of future LHC runs. This means that the B-L-SM, with heavy yet allowed Z' boson mass range, in practice, does not resolve the tension between the observed anomaly in the muon (g - 2)(mu) and the theoretical prediction in the Standard Model. Such a heavy Z' boson also implies that the minimal value for the new Higgs mass is of the order of 400 GeV.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chinese Physics C

ISSN

1674-1137

e-ISSN

2058-6132

Svazek periodika

45

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

013103

Kód UT WoS článku

000606026200001

EID výsledku v databázi Scopus

2-s2.0-85099143965