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Framework for Model Independent Analyses of Multiple Extra Quark Scenarios

Framework for Model Independent Analyses of Multiple Extra Quark Scenarios
Framework for Model Independent Analyses of Multiple Extra Quark Scenarios
In this paper we present an analysis strategy and a dedicated tool to determine the exclusion confidence level for any scenario involving multiple heavy extra quarks with generic decay channels, as predicted in several extensions of the Standard Model. We have created, validated and used a software package, called XQCAT (eXtra Quark Combined Analysis Tool), which is based on publicly available experimental data from direct searches for top partners and from Supersymmetry inspired searches. By means of this code, we recast the limits from CMS on new heavy extra quarks considering a complete set of decay channels. The resulting exclusion confidence levels are presented for some simple scenarios with multiple states and general coupling assumptions. Highlighting the importance of combining multiple topology searches to obtain accurate re-interpretations of the existing searches, we discuss the reach of the SUSY analyses so as to set bounds on new quark resonances. In particular, we report on the re-interpretation of the existing limits on benchmark scenarios with one and multiple pair-produced top partners having non-exclusive couplings to the third Standard Model generation of quarks.
Barducci, Daniele
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Belyaev, Alexander
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Buchkremer, Mathieu
6b49e0c1-3bb1-4e0f-9abd-c2db8254b90c
Cacciapaglia, Giacomo
380b5956-ae5a-48ca-8079-0b477da50014
Deandrea, Aldo
0c76d84a-f971-4dbd-94b6-83832f2b2b7c
De Curtis, Stefania
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Marrouche, Jad
c6bc01a8-fd5c-40c6-b022-061c2a49a217
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Panizzi, Luca
e8ade38e-ee5d-4e2d-8307-3286a8b92740
Barducci, Daniele
d0289bdd-ac34-493c-95cd-36d811070ecc
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Buchkremer, Mathieu
6b49e0c1-3bb1-4e0f-9abd-c2db8254b90c
Cacciapaglia, Giacomo
380b5956-ae5a-48ca-8079-0b477da50014
Deandrea, Aldo
0c76d84a-f971-4dbd-94b6-83832f2b2b7c
De Curtis, Stefania
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Marrouche, Jad
c6bc01a8-fd5c-40c6-b022-061c2a49a217
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Panizzi, Luca
e8ade38e-ee5d-4e2d-8307-3286a8b92740

Barducci, Daniele, Belyaev, Alexander, Buchkremer, Mathieu, Cacciapaglia, Giacomo, Deandrea, Aldo, De Curtis, Stefania, Marrouche, Jad, Moretti, Stefano and Panizzi, Luca (2014) Framework for Model Independent Analyses of Multiple Extra Quark Scenarios. The Journal of High Energy Physics, 2014 (12), [80]. (doi:10.1007/JHEP12(2014)080).

Record type: Article

Abstract

In this paper we present an analysis strategy and a dedicated tool to determine the exclusion confidence level for any scenario involving multiple heavy extra quarks with generic decay channels, as predicted in several extensions of the Standard Model. We have created, validated and used a software package, called XQCAT (eXtra Quark Combined Analysis Tool), which is based on publicly available experimental data from direct searches for top partners and from Supersymmetry inspired searches. By means of this code, we recast the limits from CMS on new heavy extra quarks considering a complete set of decay channels. The resulting exclusion confidence levels are presented for some simple scenarios with multiple states and general coupling assumptions. Highlighting the importance of combining multiple topology searches to obtain accurate re-interpretations of the existing searches, we discuss the reach of the SUSY analyses so as to set bounds on new quark resonances. In particular, we report on the re-interpretation of the existing limits on benchmark scenarios with one and multiple pair-produced top partners having non-exclusive couplings to the third Standard Model generation of quarks.

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More information

e-pub ahead of print date: 10 December 2014
Published date: December 2014
Additional Information: 31 pages, 6 figures, 3 tables, version accepted for publication in JHEP
Organisations: Theory Group, Physics & Astronomy

Identifiers

Local EPrints ID: 409609
URI: http://eprints.soton.ac.uk/id/eprint/409609
PURE UUID: 99bb3e14-e26a-448d-a8be-b35775aaf04a
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

Catalogue record

Date deposited: 31 May 2017 04:02
Last modified: 10 Nov 2021 03:19

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Contributors

Author: Daniele Barducci
Author: Mathieu Buchkremer
Author: Giacomo Cacciapaglia
Author: Aldo Deandrea
Author: Stefania De Curtis
Author: Jad Marrouche
Author: Stefano Moretti
Author: Luca Panizzi

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