Abstract
The production of pairs of Higgs bosons at hadron colliders provides unique information on the Higgs sector and on the mechanism underlying electroweak symmetry breaking (EWSB). Most studies have concentrated on the gluon-fusion production mode which has the largest cross section. However, despite its small production rate, the vector-boson fusion channel can also be relevant since even small modifications of the Higgs couplings to vector bosons induce a striking increase of the cross section as a function of the invariant mass of the Higgs boson pair. In this work we exploit this unique signature to propose a strategy to extract the hhVV quartic coupling and provide model-independent constraints on theories where EWSB is driven by new strong interactions. We take advantage of the higher signal yield of the bb¯ bb¯ final state and make extensive use of jet-substructure techniques to reconstruct signal events with a boosted topology, characteristic of large partonic energies, where each Higgs boson decays to a single collimated jet. Our results demonstrate that the hhVV coupling can be measured with 45% (20%) precision at the LHC for L= 300 (3000) fb- 1, while a 1% precision can be achieved at a 100 TeV collider.
| Original language | English |
|---|---|
| Article number | 481 |
| Number of pages | 26 |
| Journal | European Physical Journal C |
| Volume | 77 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 19 Jul 2017 |
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Keywords
- hep-ph
- hep-ex
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Higgs pair production in vector-boson fusion at the LHC and beyond. / Bishara, Fady; Contino, Roberto; Rojo, Juan.
In: European Physical Journal C, Vol. 77, No. 7, 481, 19.07.2017.Research output: Contribution to Journal › Article › Academic › peer-review
TY - JOUR
T1 - Higgs pair production in vector-boson fusion at the LHC and beyond
AU - Bishara, Fady
AU - Contino, Roberto
AU - Rojo, Juan
PY - 2017/7/19
Y1 - 2017/7/19
N2 - The production of pairs of Higgs bosons at hadron colliders provides unique information on the Higgs sector and on the mechanism underlying electroweak symmetry breaking (EWSB). Most studies have concentrated on the gluon-fusion production mode which has the largest cross section. However, despite its small production rate, the vector-boson fusion channel can also be relevant since even small modifications of the Higgs couplings to vector bosons induce a striking increase of the cross section as a function of the invariant mass of the Higgs boson pair. In this work we exploit this unique signature to propose a strategy to extract the hhVV quartic coupling and provide model-independent constraints on theories where EWSB is driven by new strong interactions. We take advantage of the higher signal yield of the bb¯ bb¯ final state and make extensive use of jet-substructure techniques to reconstruct signal events with a boosted topology, characteristic of large partonic energies, where each Higgs boson decays to a single collimated jet. Our results demonstrate that the hhVV coupling can be measured with 45% (20%) precision at the LHC for L= 300 (3000) fb- 1, while a 1% precision can be achieved at a 100 TeV collider.
AB - The production of pairs of Higgs bosons at hadron colliders provides unique information on the Higgs sector and on the mechanism underlying electroweak symmetry breaking (EWSB). Most studies have concentrated on the gluon-fusion production mode which has the largest cross section. However, despite its small production rate, the vector-boson fusion channel can also be relevant since even small modifications of the Higgs couplings to vector bosons induce a striking increase of the cross section as a function of the invariant mass of the Higgs boson pair. In this work we exploit this unique signature to propose a strategy to extract the hhVV quartic coupling and provide model-independent constraints on theories where EWSB is driven by new strong interactions. We take advantage of the higher signal yield of the bb¯ bb¯ final state and make extensive use of jet-substructure techniques to reconstruct signal events with a boosted topology, characteristic of large partonic energies, where each Higgs boson decays to a single collimated jet. Our results demonstrate that the hhVV coupling can be measured with 45% (20%) precision at the LHC for L= 300 (3000) fb- 1, while a 1% precision can be achieved at a 100 TeV collider.
KW - hep-ph
KW - hep-ex
UR - http://www.scopus.com/inward/record.url?scp=85025167737&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85025167737&partnerID=8YFLogxK
U2 - 10.1140/epjc/s10052-017-5037-9
DO - 10.1140/epjc/s10052-017-5037-9
M3 - Article
VL - 77
JO - European Physical Journal C. Particles and Fields
JF - European Physical Journal C. Particles and Fields
SN - 1434-6044
IS - 7
M1 - 481
ER -