Fixing the number of non-sequential generations within the SU (2) L - U (1) y gauge group

Elmer Ramirez Barreto, David Romero Abad

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In this work, we explore the possibility of fixing the number of new non-sequential chiral-type generations of fermions that could be added to the Standard Model by combining the condition that arise from the anomaly cancellation with the restriction in the number of flavors imposed by the QCD asymptotic freedom. We found that the maximum number of new generations is four, and this allows us, at the same time, to place limits for the electrical charges of quarks and leptons within an SM-like framework. Our result is compatible with the constraints involving new generations and their contributions to the oblique parameters S and T.

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fixing
cancellation
leptons
constrictions
quantum chromodynamics
fermions
quarks
anomalies

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abstract = "In this work, we explore the possibility of fixing the number of new non-sequential chiral-type generations of fermions that could be added to the Standard Model by combining the condition that arise from the anomaly cancellation with the restriction in the number of flavors imposed by the QCD asymptotic freedom. We found that the maximum number of new generations is four, and this allows us, at the same time, to place limits for the electrical charges of quarks and leptons within an SM-like framework. Our result is compatible with the constraints involving new generations and their contributions to the oblique parameters S and T.",
keywords = "Gauge anomaly cancellation, new fermions, QCD asymptotic freedom",
author = "Barreto, {Elmer Ramirez} and Abad, {David Romero}",
note = "10 pages, accepted in Mod. Phys. Lett. A",
year = "2019",
month = "1",
day = "1",
doi = "10.1142/S0217732319502924",
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journal = "Modern Physics Letters A",
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Fixing the number of non-sequential generations within the SU (2) L - U (1) y gauge group. / Barreto, Elmer Ramirez; Abad, David Romero.

En: Modern Physics Letters A, 01.01.2019.

Resultado de la investigación: Contribución a una revistaArtículoInvestigaciónrevisión exhaustiva

TY - JOUR

T1 - Fixing the number of non-sequential generations within the SU (2) L - U (1) y gauge group

AU - Barreto, Elmer Ramirez

AU - Abad, David Romero

N1 - 10 pages, accepted in Mod. Phys. Lett. A

PY - 2019/1/1

Y1 - 2019/1/1

N2 - In this work, we explore the possibility of fixing the number of new non-sequential chiral-type generations of fermions that could be added to the Standard Model by combining the condition that arise from the anomaly cancellation with the restriction in the number of flavors imposed by the QCD asymptotic freedom. We found that the maximum number of new generations is four, and this allows us, at the same time, to place limits for the electrical charges of quarks and leptons within an SM-like framework. Our result is compatible with the constraints involving new generations and their contributions to the oblique parameters S and T.

AB - In this work, we explore the possibility of fixing the number of new non-sequential chiral-type generations of fermions that could be added to the Standard Model by combining the condition that arise from the anomaly cancellation with the restriction in the number of flavors imposed by the QCD asymptotic freedom. We found that the maximum number of new generations is four, and this allows us, at the same time, to place limits for the electrical charges of quarks and leptons within an SM-like framework. Our result is compatible with the constraints involving new generations and their contributions to the oblique parameters S and T.

KW - Gauge anomaly cancellation

KW - new fermions

KW - QCD asymptotic freedom

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U2 - 10.1142/S0217732319502924

DO - 10.1142/S0217732319502924

M3 - Artículo

JO - Modern Physics Letters A

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SN - 0217-7323

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