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Light composite fermions from holography

Light composite fermions from holography
Light composite fermions from holography
Motivated by Beyond the Standard Model theories of composite fermions or top partners, we propose a holographic mechanism that generates light baryonic states in a strongly coupled gauge theory. The starting point are the fermionic fluctuations of massive probe branes embedded into AdS5× S5. We first consider the D3/probe D7-brane system. We derive in detail the fermionic fluctuation equations and show the supersymmetric degeneracy of the mesinos with the mesons. Here we view the fermionic mesinos as potential realizations of composite fermions or top partners. We then add higher dimension operators and study their impact on the mesino spectrum. In particular we show that the ground state mesino mass can be pushed to an arbitrarily light value by a suitable choice of the coupling of the higher dimension operator, g. No matter the value of g, the masses of higher excited states never fall below the mass of the ground state at g = 0. We also present similar results for the supersymmetric D3/D3 and D3/D5 systems.
10.1007%2FJHEP11(2019)160
1029-8479
1-27
Abt, Raimond
f16a88da-b76b-4cd6-b817-fefb36184c23
Erdmenger, Johanna
a6829342-7960-44ea-b502-fe531cde3f33
Evans, Nicholas
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Rigatos, Konstantinos S.
858cbc5d-9583-41f3-be90-449c2530840e
Abt, Raimond
f16a88da-b76b-4cd6-b817-fefb36184c23
Erdmenger, Johanna
a6829342-7960-44ea-b502-fe531cde3f33
Evans, Nicholas
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Rigatos, Konstantinos S.
858cbc5d-9583-41f3-be90-449c2530840e

Abt, Raimond, Erdmenger, Johanna, Evans, Nicholas and Rigatos, Konstantinos S. (2019) Light composite fermions from holography. Journal of High Energy Physics, 1-27. (doi:10.1007%2FJHEP11(2019)160).

Record type: Article

Abstract

Motivated by Beyond the Standard Model theories of composite fermions or top partners, we propose a holographic mechanism that generates light baryonic states in a strongly coupled gauge theory. The starting point are the fermionic fluctuations of massive probe branes embedded into AdS5× S5. We first consider the D3/probe D7-brane system. We derive in detail the fermionic fluctuation equations and show the supersymmetric degeneracy of the mesinos with the mesons. Here we view the fermionic mesinos as potential realizations of composite fermions or top partners. We then add higher dimension operators and study their impact on the mesino spectrum. In particular we show that the ground state mesino mass can be pushed to an arbitrarily light value by a suitable choice of the coupling of the higher dimension operator, g. No matter the value of g, the masses of higher excited states never fall below the mass of the ground state at g = 0. We also present similar results for the supersymmetric D3/D3 and D3/D5 systems.

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Accepted/In Press date: 17 October 2019
e-pub ahead of print date: 27 November 2019

Identifiers

Local EPrints ID: 435228
URI: http://eprints.soton.ac.uk/id/eprint/435228
ISSN: 1029-8479
PURE UUID: cdba4b37-0176-41ee-8d2a-e60812a83482

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Date deposited: 28 Oct 2019 17:30
Last modified: 06 Oct 2020 17:00

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