Indirect model-dependent probe of the Higgs self-coupling
The Higgs associated production cross section at an e[superscript +]e[superscript −] collider is indirectly sensitive to the Higgs self-coupling, h[superscript 3], at next-to-leading order (NLO). Utilizing this, a new indirect method is proposed for constraining deviations in the self-coupling below...
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| Format: | Article |
| Language: | English |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/88641 |
| _version_ | 1811080694163570688 |
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| author | McCullough, Matthew P. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics McCullough, Matthew P. |
| author_sort | McCullough, Matthew P. |
| collection | MIT |
| description | The Higgs associated production cross section at an e[superscript +]e[superscript −] collider is indirectly sensitive to the Higgs self-coupling, h[superscript 3], at next-to-leading order (NLO). Utilizing this, a new indirect method is proposed for constraining deviations in the self-coupling below the di-Higgs production threshold in certain models. Although this indirect constraint is model dependent, making it valid only under specific assumptions, meaningful indirect constraints on the self-coupling may be realized. Specific realistic scenarios where the indirect constraint applies are discussed and in particular it is shown that in the well-motivated class of two Higgs-doublet models there exist regions of parameter space in which the NLO effects from a modified self-coupling dominate over the leading order modifications, demonstrating a concrete scenario in which large modifications of the Higgs self-coupling may be indirectly constrained using the proposed method. Other models, such as strongly coupled scenarios, are also discussed. The indirect method would give valuable constraints on deviations in the Higgs self-coupling, and would be complementary to the direct measurements possible with di-Higgs production at other colliders, providing precious additional information in the effort to unravel the properties of the Higgs boson. |
| first_indexed | 2024-09-23T11:35:17Z |
| format | Article |
| id | mit-1721.1/88641 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:35:17Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/886412022-10-01T04:36:20Z Indirect model-dependent probe of the Higgs self-coupling McCullough, Matthew P. Massachusetts Institute of Technology. Department of Physics McCullough, Matthew P. The Higgs associated production cross section at an e[superscript +]e[superscript −] collider is indirectly sensitive to the Higgs self-coupling, h[superscript 3], at next-to-leading order (NLO). Utilizing this, a new indirect method is proposed for constraining deviations in the self-coupling below the di-Higgs production threshold in certain models. Although this indirect constraint is model dependent, making it valid only under specific assumptions, meaningful indirect constraints on the self-coupling may be realized. Specific realistic scenarios where the indirect constraint applies are discussed and in particular it is shown that in the well-motivated class of two Higgs-doublet models there exist regions of parameter space in which the NLO effects from a modified self-coupling dominate over the leading order modifications, demonstrating a concrete scenario in which large modifications of the Higgs self-coupling may be indirectly constrained using the proposed method. Other models, such as strongly coupled scenarios, are also discussed. The indirect method would give valuable constraints on deviations in the Higgs self-coupling, and would be complementary to the direct measurements possible with di-Higgs production at other colliders, providing precious additional information in the effort to unravel the properties of the Higgs boson. 2014-08-08T19:00:26Z 2014-08-08T19:00:26Z 2014-07 2014-04 2014-07-23T20:47:23Z Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/88641 McCullough, Matthew. “Indirect Model-Dependent Probe of the Higgs Self-Coupling.” Phys. Rev. D 90, no. 1 (July 2014). © 2014 American Physical Society en http://dx.doi.org/10.1103/PhysRevD.90.015001 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | McCullough, Matthew P. Indirect model-dependent probe of the Higgs self-coupling |
| title | Indirect model-dependent probe of the Higgs self-coupling |
| title_full | Indirect model-dependent probe of the Higgs self-coupling |
| title_fullStr | Indirect model-dependent probe of the Higgs self-coupling |
| title_full_unstemmed | Indirect model-dependent probe of the Higgs self-coupling |
| title_short | Indirect model-dependent probe of the Higgs self-coupling |
| title_sort | indirect model dependent probe of the higgs self coupling |
| url | http://hdl.handle.net/1721.1/88641 |
| work_keys_str_mv | AT mcculloughmatthewp indirectmodeldependentprobeofthehiggsselfcoupling |