Probing light scalars and vector-like quarks at the high-luminosity LHC
Abstract A model based on a $$U(1)_{T^3_R}$$ U ( 1 ) T R 3 extension of the Standard Model can address the mass hierarchy between generations of fermions, explain thermal dark matter abundance, and the muon $$g - 2$$ g - 2 , $$R_{(D)}$$ R ( D ) , and $$R_{(D^*)}$$ R ( D ∗ ) anomalies. The model cont...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-04-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14085-1 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849734624551370752 |
|---|---|
| author | U. S. Qureshi A. Gurrola A. Flórez C. Rodriguez |
| author_facet | U. S. Qureshi A. Gurrola A. Flórez C. Rodriguez |
| author_sort | U. S. Qureshi |
| collection | DOAJ |
| description | Abstract A model based on a $$U(1)_{T^3_R}$$ U ( 1 ) T R 3 extension of the Standard Model can address the mass hierarchy between generations of fermions, explain thermal dark matter abundance, and the muon $$g - 2$$ g - 2 , $$R_{(D)}$$ R ( D ) , and $$R_{(D^*)}$$ R ( D ∗ ) anomalies. The model contains a light scalar boson $$\phi '$$ ϕ ′ and a heavy vector-like quark $$\chi _\textrm{u}$$ χ u that can be probed at CERN’s large hadron collider (LHC). We perform a phenomenology study on the production of $$\phi '$$ ϕ ′ and $${\chi }_u$$ χ u particles from proton–proton $$(\textrm{pp})$$ ( pp ) collisions at the LHC at $$\sqrt{s}=13.6$$ s = 13.6 TeV, primarily through $$g{-g}$$ g - g and $$t{-\chi _\textrm{u}}$$ t - χ u fusion. We work under a simplified model approach and directly take the $$\chi _\textrm{u}$$ χ u and $$\phi '$$ ϕ ′ masses as free parameters. We perform a phenomenological analysis considering $$\chi _\textrm{u}$$ χ u final states to b-quarks, muons, and neutrinos, and $$\phi '$$ ϕ ′ decays to $$\mu ^+\mu ^-$$ μ + μ - . A machine learning algorithm is used to maximize the signal sensitivity, considering an integrated luminosity of 3000 $$\text {fb}^{-1}$$ fb - 1 . The proposed methodology can be a key mode for discovery over a large mass range, including low masses, traditionally considered difficult due to experimental constraints. |
| format | Article |
| id | doaj-art-e02dd53215e04bbd9b50330f0c2da29c |
| institution | DOAJ |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-e02dd53215e04bbd9b50330f0c2da29c2025-08-20T03:07:44ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-04-0185411510.1140/epjc/s10052-025-14085-1Probing light scalars and vector-like quarks at the high-luminosity LHCU. S. Qureshi0A. Gurrola1A. Flórez2C. Rodriguez3Department of Physics and Astronomy, Vanderbilt UniversityDepartment of Physics and Astronomy, Vanderbilt UniversityPhysics Department, Universidad de los AndesPhysics Department, Universidad de los AndesAbstract A model based on a $$U(1)_{T^3_R}$$ U ( 1 ) T R 3 extension of the Standard Model can address the mass hierarchy between generations of fermions, explain thermal dark matter abundance, and the muon $$g - 2$$ g - 2 , $$R_{(D)}$$ R ( D ) , and $$R_{(D^*)}$$ R ( D ∗ ) anomalies. The model contains a light scalar boson $$\phi '$$ ϕ ′ and a heavy vector-like quark $$\chi _\textrm{u}$$ χ u that can be probed at CERN’s large hadron collider (LHC). We perform a phenomenology study on the production of $$\phi '$$ ϕ ′ and $${\chi }_u$$ χ u particles from proton–proton $$(\textrm{pp})$$ ( pp ) collisions at the LHC at $$\sqrt{s}=13.6$$ s = 13.6 TeV, primarily through $$g{-g}$$ g - g and $$t{-\chi _\textrm{u}}$$ t - χ u fusion. We work under a simplified model approach and directly take the $$\chi _\textrm{u}$$ χ u and $$\phi '$$ ϕ ′ masses as free parameters. We perform a phenomenological analysis considering $$\chi _\textrm{u}$$ χ u final states to b-quarks, muons, and neutrinos, and $$\phi '$$ ϕ ′ decays to $$\mu ^+\mu ^-$$ μ + μ - . A machine learning algorithm is used to maximize the signal sensitivity, considering an integrated luminosity of 3000 $$\text {fb}^{-1}$$ fb - 1 . The proposed methodology can be a key mode for discovery over a large mass range, including low masses, traditionally considered difficult due to experimental constraints.https://doi.org/10.1140/epjc/s10052-025-14085-1 |
| spellingShingle | U. S. Qureshi A. Gurrola A. Flórez C. Rodriguez Probing light scalars and vector-like quarks at the high-luminosity LHC European Physical Journal C: Particles and Fields |
| title | Probing light scalars and vector-like quarks at the high-luminosity LHC |
| title_full | Probing light scalars and vector-like quarks at the high-luminosity LHC |
| title_fullStr | Probing light scalars and vector-like quarks at the high-luminosity LHC |
| title_full_unstemmed | Probing light scalars and vector-like quarks at the high-luminosity LHC |
| title_short | Probing light scalars and vector-like quarks at the high-luminosity LHC |
| title_sort | probing light scalars and vector like quarks at the high luminosity lhc |
| url | https://doi.org/10.1140/epjc/s10052-025-14085-1 |
| work_keys_str_mv | AT usqureshi probinglightscalarsandvectorlikequarksatthehighluminositylhc AT agurrola probinglightscalarsandvectorlikequarksatthehighluminositylhc AT aflorez probinglightscalarsandvectorlikequarksatthehighluminositylhc AT crodriguez probinglightscalarsandvectorlikequarksatthehighluminositylhc |