Long-lived, colour-triplet scalars from unnaturalness

Barnard, James; Cox, Peter; Gherghetta, Tony; Spray, Andrew

doi:10.1007/JHEP03(2016)003

Title: Long-lived, colour-triplet scalars from unnaturalness

Abstract

We study that long-lived, colour-triplet scalars are a generic prediction of unnatural, or split, composite Higgs models where the spontaneous global-symmetry breaking scale f ≳ 10TeV and an unbroken SU(5) symmetry is preserved. Since the triplet scalars are pseudo Nambu- Goldstone bosons they are split from the much heavier composite-sector resonances and are the lightest exotic, coloured states. This makes them ideal to search for at colliders. Due to discrete symmetries the triplet scalar decays via a dimension-six term and given the large suppression scale f is often metastable. We show that existing searches for collider-stable R-hadrons from Run-I at the LHC forbid a triplet scalar mass below 845 GeV, whereas with 300 fb^-1 at 13TeV triplet scalar masses up to 1.4TeV can be discovered. For shorter lifetimes displaced-vertex searches provide a discovery reach of up to 1.8TeV. Also, we present exclusion and discovery reaches of future hadron colliders as well as indirect limits that arise from modi cations of the Higgs couplings.

Authors:

Barnard, James ^[1]; Cox, Peter ^[1]; Gherghetta, Tony ^[2]; Spray, Andrew ^[3]

The University of Melbourne, Victoria (Australia)
Univ. of Minnesota, Minneapolis, MN (United States)
The University of Melbourne, Victoria (Australia); Institute for Basic Science (IBS), Daejeon (Korea)

Publication Date:: Tue Mar 01 00:00:00 EST 2016

Research Org.:: Univ. of Minnesota, Minneapolis, MN (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1327010

Grant/Contract Number:: SC0011842

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 3; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; beyond standard model; technicolor and composite models

Citation Formats


                    Barnard, James, Cox, Peter, Gherghetta, Tony, and Spray, Andrew. Long-lived, colour-triplet scalars from unnaturalness.  United States: N. p., 2016. 
Web.  doi:10.1007/JHEP03(2016)003.

Copy to clipboard


                    Barnard, James, Cox, Peter, Gherghetta, Tony, & Spray, Andrew. Long-lived, colour-triplet scalars from unnaturalness.  United States.  https://doi.org/10.1007/JHEP03(2016)003

Copy to clipboard


                    Barnard, James, Cox, Peter, Gherghetta, Tony, and Spray, Andrew. Tue .  
"Long-lived, colour-triplet scalars from unnaturalness".  United States.  https://doi.org/10.1007/JHEP03(2016)003.  https://www.osti.gov/servlets/purl/1327010.

Copy to clipboard


                    
@article{osti_1327010,

  title        = {Long-lived, colour-triplet scalars from unnaturalness},

  author       = {Barnard, James and Cox, Peter and Gherghetta, Tony and Spray, Andrew},

  abstractNote = {We study that long-lived, colour-triplet scalars are a generic prediction of unnatural, or split, composite Higgs models where the spontaneous global-symmetry breaking scale f ≳ 10TeV and an unbroken SU(5) symmetry is preserved. Since the triplet scalars are pseudo Nambu- Goldstone bosons they are split from the much heavier composite-sector resonances and are the lightest exotic, coloured states. This makes them ideal to search for at colliders. Due to discrete symmetries the triplet scalar decays via a dimension-six term and given the large suppression scale f is often metastable. We show that existing searches for collider-stable R-hadrons from Run-I at the LHC forbid a triplet scalar mass below 845 GeV, whereas with 300 fb-1 at 13TeV triplet scalar masses up to 1.4TeV can be discovered. For shorter lifetimes displaced-vertex searches provide a discovery reach of up to 1.8TeV. Also, we present exclusion and discovery reaches of future hadron colliders as well as indirect limits that arise from modi cations of the Higgs couplings.},

  doi          = {10.1007/JHEP03(2016)003},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 3,

  volume       = 2016,

  place        = {United States},

  year         = {Tue Mar 01 00:00:00 EST 2016},

  month        = {Tue Mar 01 00:00:00 EST 2016}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1007/JHEP03(2016)003

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 9 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Supersymmetric unification without low energy supersymmetry and signatures for fine-tuning at the LHC
journal, June 2005

Arkani-Hamed, Nima; Dimopoulos, Savas
Journal of High Energy Physics, Vol. 2005, Issue 06
DOI: 10.1088/1126-6708/2005/06/073

Mini-Split
journal, February 2013

Arvanitaki, Asimina; Craig, Nathaniel; Dimopoulos, Savas
Journal of High Energy Physics, Vol. 2013, Issue 2
DOI: 10.1007/JHEP02(2013)126

Probing baryogenesis with displaced vertices at the LHC
journal, February 2015

Cui, Yanou; Shuve, Brian
Journal of High Energy Physics, Vol. 2015, Issue 2
DOI: 10.1007/JHEP02(2015)049

The fate of long-lived superparticles with hadronic decays after LHC Run 1
journal, June 2015

Liu, Zhen; Tweedie, Brock
Journal of High Energy Physics, Vol. 2015, Issue 6
DOI: 10.1007/JHEP06(2015)042

Phenomenology of a long-lived LSP with R-parity violation
journal, August 2015

Csáki, Csaba; Kuflik, Eric; Lombardo, Salvator
Journal of High Energy Physics, Vol. 2015, Issue 8
DOI: 10.1007/JHEP08(2015)016

Top Compositeness and Precision Unification
journal, October 2005

Agashe, Kaustubh; Contino, Roberto; Sundrum, Raman
Physical Review Letters, Vol. 95, Issue 17
DOI: 10.1103/PhysRevLett.95.171804

Search for decays of stopped long-lived particles produced in proton–proton collisions at $$\sqrt{s}= 8\,\text {TeV} $$ s = 8 TeV
journal, April 2015

Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.
The European Physical Journal C, Vol. 75, Issue 4
DOI: 10.1140/epjc/s10052-015-3367-z

Squark and gluino production cross sections in $$pp$$ p p collisions at $$\sqrt{s} = 13, 14, 33$$ s = 13 , 14 , 33 and $$100$$ 100 TeV
journal, December 2014

Borschensky, Christoph; Krämer, Michael; Kulesza, Anna
The European Physical Journal C, Vol. 74, Issue 12
DOI: 10.1140/epjc/s10052-014-3174-y

PYTHIA 6.4 physics and manual
journal, May 2006

Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter
Journal of High Energy Physics, Vol. 2006, Issue 05
DOI: 10.1088/1126-6708/2006/05/026

Stable massive particles at colliders
journal, January 2007

Fairbairn, M.; Kraan, A. C.; Milstead, D. A.
Physics Reports, Vol. 438, Issue 1
DOI: 10.1016/j.physrep.2006.10.002

A brief introduction to PYTHIA 8.1
journal, June 2008

Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter
Computer Physics Communications, Vol. 178, Issue 11
DOI: 10.1016/j.cpc.2008.01.036

Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at $$\varvec{\sqrt{s} = 8}$$ s = 8 TeV using the ATLAS experiment
journal, September 2015

Aad, G.; Abbott, B.; Abdallah, J.
The European Physical Journal C, Vol. 75, Issue 9
DOI: 10.1140/epjc/s10052-015-3609-0

Search for charginos nearly mass degenerate with the lightest neutralino based on a disappearing-track signature in $p p$ collisions at $\sqrt{(} s) = 8 TeV$ with the ATLAS detector
journal, December 2013

Aad, G.; Abajyan, T.; Abbott, B.
Physical Review D, Vol. 88, Issue 11
DOI: 10.1103/PhysRevD.88.112006

Search for pair-produced long-lived neutral particles decaying to jets in the ATLAS hadronic calorimeter in pp collisions at $\sqrt{s} = 8 TeV$
journal, April 2015

Aad, G.; Abbott, B.; Abdallah, J.
Physics Letters B, Vol. 743
DOI: 10.1016/j.physletb.2015.02.015

Search for long-lived, weakly interacting particles that decay to displaced hadronic jets in proton-proton collisions at $\sqrt{s} = 8 TeV$ with the ATLAS detector
journal, July 2015

Aad, G.; Abbott, B.; Abdallah, J.
Physical Review D, Vol. 92, Issue 1
DOI: 10.1103/PhysRevD.92.012010

Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in $p p$ collisions at $\sqrt{s} = 8 TeV$ with the ATLAS detector
journal, October 2015

Aad, G.; Abbott, B.; Abdallah, J.
Physical Review D, Vol. 92, Issue 7
DOI: 10.1103/PhysRevD.92.072004

Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at $\sqrt{s} = 8 TeV$
journal, January 2015

Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.
Physical Review D, Vol. 91, Issue 1
DOI: 10.1103/PhysRevD.91.012007

Asymptotic formulae for likelihood-based tests of new physics
journal, February 2011

Cowan, Glen; Cranmer, Kyle; Gross, Eilam
The European Physical Journal C, Vol. 71, Issue 2
DOI: 10.1140/epjc/s10052-011-1554-0

Snowmass Energy Frontier Simulations
report, September 2013

Anderson, Jacob
DOI: 10.2172/1128171

The anti- k _t jet clustering algorithm
journal, April 2008

Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory
Journal of High Energy Physics, Vol. 2008, Issue 04
DOI: 10.1088/1126-6708/2008/04/063

FastJet user manual: (for version 3.0.2)
journal, March 2012

Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory
The European Physical Journal C, Vol. 72, Issue 3
DOI: 10.1140/epjc/s10052-012-1896-2

Tracking and b-Tagging Performance with an Upgraded CMS Pixel Detector
journal, January 2012

Jindal, Pratima
Physics Procedia, Vol. 37
DOI: 10.1016/j.phpro.2012.02.448

SUSY simplified models at 14, 33, and 100 TeV proton colliders
journal, April 2014

Cohen, Timothy; Golling, Tobias; Hance, Mike
Journal of High Energy Physics, Vol. 2014, Issue 4
DOI: 10.1007/JHEP04(2014)117

First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility
journal, March 2014

Akerib, D. S.; Araújo, H. M.; Bai, X.
Physical Review Letters, Vol. 112, Issue 9
DOI: 10.1103/PhysRevLett.112.091303

Works referencing / citing this record:

Long-lived particles at the energy frontier: the MATHUSLA physics case
journal, October 2019

Curtin, David; Drewes, Marco; McCullough, Matthew
Reports on Progress in Physics, Vol. 82, Issue 11
DOI: 10.1088/1361-6633/ab28d6

LHC Phenomenology of Dark Matter with a Color-Octet Partner
text, January 2018

Davoli, Alessandro; De Simone, Andrea; Jacques, Thomas
arXiv
DOI: 10.48550/arxiv.1803.02861

Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
text, January 2018

Curtin, David; Drewes, Marco; McCullough, Matthew
arXiv
DOI: 10.48550/arxiv.1806.07396

Similar Records in DOE PAGES and OSTI.GOV collections:

The unnatural composite Higgs

Journal Article Barnard, James ; Gherghetta, Tony ; Ray, Tirtha Sankar ; ... - Journal of High Energy Physics (Online)

Composite Higgs models can trivially satisfy precision-electroweak and flavour constraints by simply having a large spontaneous symmetry breaking scale, f ≳ 10 TeV. This produces a ‘split’ spectrum, where the strong sector resonances have masses greater than 10 TeV and are separated from the pseudo Nambu-Goldstone bosons, which remain near the electroweak scale. Even though a tuning of order 10^–4 is required to obtain the observed Higgs boson mass, the big hierarchy problem remains mostly solved. Intriguingly, models with a fully-composite right-handed top quark also exhibit improved gauge coupling unification. By restricting ourselves to models which preserve these features wemore »« less
Cited by 23
https://doi.org/10.1007/JHEP01(2015)067

Full Text Available
Collider probes of real triplet scalar dark matter

Journal Article Chiang, Cheng-Wei ; Cottin, Giovanna ; Du, Yong ; ... - Journal of High Energy Physics (Online)

We study discovery prospects for a real triplet extension of the Standard Model scalar sector at the Large Hadron Collider (LHC) and a possible future 100 TeVmore »« less
https://doi.org/10.1007/jhep01(2021)198

Full Text Available
Search for the Standard Model Higgs boson in the decay mode H→ W⁺W^-→ ℓ⁺vℓ^-v

Thesis/Dissertation Penning, Bjorn

The question of the nature and principles of the universe and our place in it is the driving force of science since Mesopotamian astronomers glanced for the first time at the starry sky and Greek atomism has been formulated. During the last hundred years modern science was able to extend its knowledge tremendously, answering many questions, opening entirely new fields but as well raising many new questions. Particularly Astronomy, Astroparticle Physics and Particle Physics lead the race to answer these fundamental and ancient questions experimentally. Today it is known that matter consists of fermions, the quarks and leptons. Four fundamentalmore »« less
https://doi.org/10.2172/968355

Full Text Available
Search for massive WH resonances decaying into the $$\ell \nu \mathrm{b} \overline{\mathrm{b}} $$ final state at $$\sqrt{s}=8$$ $$~\text {TeV}$$

Journal Article Khachatryan, Vardan - European Physical Journal. C, Particles and Fields

A search for a massive resonance W ' decaying into a W and a Higgs boson in the ℓνmore »« less
Cited by 31
https://doi.org/10.1140/epjc/s10052-016-4067-z

Full Text Available
Study of the heavy flavour fractions in z+jets events from $$p\bar{p}$$ collisions at energy √s = 1.96 TeV with the CDF II detector at the Tevatron collider

Thesis/Dissertation Mastrandrea, Paolo

The Standard Model of field and particles is the theory that provides the best description of the known phenomenology of the particle physics up to now. Data collected in the last years, mainly by the experiments at the big particle accelerators (SPS, LEP, TEVATRON, HERA, SLAC), allowed to test the agreement between measurements and theoretical calculations with a precision of 10^-3 / 10^-4. The Standard Model is a Quantum Field Theory based on the gauge symmetry group SU(3)_C x SU(2)_L x U(1)_Y , with spontaneous symmetry breaking. This gauge group includes the color symmetry group of the strong interaction, SU(3)_C, and the symmetry group of the electroweak interactions, SU(2)_L x U(1)_Y. The formulation of the Standard Model as a gauge theory guarantees its renormalizability, but forbids explicit mass terms for fermions and gauge bosons. The masses of the particles are generated in a gauge-invariant way by the Higgs Mechanism via a spontaneous breaking of the electroweak symmetry. This mechanism also implies the presence of a massive scalar particle in the mass spectrum of the theory, the Higgs boson. This particle is the only one, among the basic elements for the minimal formulation of the Standard Model, to have not been confirmed by the experiments yet. For this reason in the last years the scientific community has been focusing an increasing fraction of its efforts on the search of the Higgs boson. The mass of the Higgs boson is a free parameter of the Standard Model, but the unitarity of the theory requires values not higher than 1 TeV and the LEP experiments excluded values smaller than 115 GeV. To explore this range of masses is under construction at CERN the Large Hadron Collider (LHC), a proton-proton collider with a center of mass energy of 14 TeV and a 10³⁴ cm^-2 s^-1 peak luminosity. According to the present schedule, this machine will start to provide collisions for the experiments at the end of 2008. In the meanwhile the only running accelerator able to provide collisions suitable for the search of the Higgs boson is the Tevatron at Fermilab, a proton-antiproton collider with a center of mass energy of 1.96 TeV working at 3 • 10³²cm^-2s^-1 peak luminosity. These features make the Tevatron able for the direct search of the Higgs boson in the 115-200 GeV mass range. Since the coupling of the Higgs boson is proportional to the masses of the particles involved, the decay in b{bar b} has the largest branching ratio for Higgs mass < 135 GeV and thus the events Z/W +more »« less
https://doi.org/10.2172/945412

Full Text Available

Similar Records

Title: Long-lived, colour-triplet scalars from unnaturalness

Abstract

Citation Formats

Supersymmetric unification without low energy supersymmetry and signatures for fine-tuning at the LHC journal, June 2005

Mini-Split journal, February 2013

Probing baryogenesis with displaced vertices at the LHC journal, February 2015

The fate of long-lived superparticles with hadronic decays after LHC Run 1 journal, June 2015

Phenomenology of a long-lived LSP with R-parity violation journal, August 2015

Top Compositeness and Precision Unification journal, October 2005

Search for decays of stopped long-lived particles produced in proton–proton collisions at $$\sqrt{s}= 8\,\text {TeV} $$ s = 8 TeV journal, April 2015

Squark and gluino production cross sections in $$pp$$ p p collisions at $$\sqrt{s} = 13, 14, 33$$ s = 13 , 14 , 33 and $$100$$ 100 TeV journal, December 2014

PYTHIA 6.4 physics and manual journal, May 2006

Stable massive particles at colliders journal, January 2007

A brief introduction to PYTHIA 8.1 journal, June 2008

Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at $$\varvec{\sqrt{s} = 8}$$ s = 8 TeV using the ATLAS experiment journal, September 2015

Search for charginos nearly mass degenerate with the lightest neutralino based on a disappearing-track signature in p p collisions at ( s ) = 8 TeV with the ATLAS detector journal, December 2013

Search for pair-produced long-lived neutral particles decaying to jets in the ATLAS hadronic calorimeter in pp collisions at s = 8 TeV journal, April 2015

Search for long-lived, weakly interacting particles that decay to displaced hadronic jets in proton-proton collisions at s = 8 TeV with the ATLAS detector journal, July 2015

Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in p p collisions at s = 8 TeV with the ATLAS detector journal, October 2015

Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at s = 8 TeV journal, January 2015

Asymptotic formulae for likelihood-based tests of new physics journal, February 2011

Snowmass Energy Frontier Simulations report, September 2013

The anti- k t jet clustering algorithm journal, April 2008

FastJet user manual: (for version 3.0.2) journal, March 2012

Tracking and b-Tagging Performance with an Upgraded CMS Pixel Detector journal, January 2012

SUSY simplified models at 14, 33, and 100 TeV proton colliders journal, April 2014

First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility journal, March 2014

Long-lived particles at the energy frontier: the MATHUSLA physics case journal, October 2019

LHC Phenomenology of Dark Matter with a Color-Octet Partner text, January 2018

Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case text, January 2018

Supersymmetric unification without low energy supersymmetry and signatures for fine-tuning at the LHC
journal, June 2005

Mini-Split
journal, February 2013

Probing baryogenesis with displaced vertices at the LHC
journal, February 2015

The fate of long-lived superparticles with hadronic decays after LHC Run 1
journal, June 2015

Phenomenology of a long-lived LSP with R-parity violation
journal, August 2015

Top Compositeness and Precision Unification
journal, October 2005

Search for decays of stopped long-lived particles produced in proton–proton collisions at $$\sqrt{s}= 8\,\text {TeV} $$ s = 8 TeV
journal, April 2015

Squark and gluino production cross sections in $$pp$$ p p collisions at $$\sqrt{s} = 13, 14, 33$$ s = 13 , 14 , 33 and $$100$$ 100 TeV
journal, December 2014

PYTHIA 6.4 physics and manual
journal, May 2006

Stable massive particles at colliders
journal, January 2007

A brief introduction to PYTHIA 8.1
journal, June 2008

Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at $$\varvec{\sqrt{s} = 8}$$ s = 8 TeV using the ATLAS experiment
journal, September 2015

Search for charginos nearly mass degenerate with the lightest neutralino based on a disappearing-track signature in $p p$ collisions at $\sqrt{(} s) = 8 TeV$ with the ATLAS detector
journal, December 2013

Search for pair-produced long-lived neutral particles decaying to jets in the ATLAS hadronic calorimeter in pp collisions at $\sqrt{s} = 8 TeV$
journal, April 2015

Search for long-lived, weakly interacting particles that decay to displaced hadronic jets in proton-proton collisions at $\sqrt{s} = 8 TeV$ with the ATLAS detector
journal, July 2015

Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in $p p$ collisions at $\sqrt{s} = 8 TeV$ with the ATLAS detector
journal, October 2015

Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at $\sqrt{s} = 8 TeV$
journal, January 2015

Asymptotic formulae for likelihood-based tests of new physics
journal, February 2011

Snowmass Energy Frontier Simulations
report, September 2013

The anti- k _t jet clustering algorithm
journal, April 2008

FastJet user manual: (for version 3.0.2)
journal, March 2012

Tracking and b-Tagging Performance with an Upgraded CMS Pixel Detector
journal, January 2012

SUSY simplified models at 14, 33, and 100 TeV proton colliders
journal, April 2014

First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility
journal, March 2014

Long-lived particles at the energy frontier: the MATHUSLA physics case
journal, October 2019

LHC Phenomenology of Dark Matter with a Color-Octet Partner
text, January 2018

Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
text, January 2018