| dc.identifier.uri | http://hdl.handle.net/11401/78288 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.language.iso | en_US | |
| dc.type | Dissertation | |
| dcterms.abstract | A Higgs boson has been found in multiple decay modes, but not yet in the mode with the largest standard model (SM) branching fraction: $h\rightarrow b\bar{b}$. This thesis details a search for the SM Higgs when produced with an associated $W$ boson. This search is performed with the ATLAS detector using data from Run 2 of the Large Hadron Collider operating at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 36.1 $fb^{-1}$. The final state of the $W$ boson is its leptonic decay with an electron or muon. The measured signal strength relative to the SM Higgs prediction is $\mu = 1.35^{+0.40}_{-0.39}$(stat.)$^{+0.56}_{-0.47}$(syst.) and the probability that observed data arises from a background fluctuation only gives a gaussian equivalent of 2.30 standard deviations compared to the expected value of 1.80 standard deviations. Combined with additional leptonic modes of associated vector boson production with a $Z$ boson, the significance of $H\rightarrow b\bar{b}$ is observed at 3.5 standard deviations compared to an expected 3.0 standard deviations with a signal strength of $\mu = 1.20^{+0.24}_{-0.23}$(stat.)$^{+0.34}_{-0.28}$(syst.) The combined search demonstrates evidence for both the Higgs boson's decay to $b$-quarks and for its production in association with a vector boson. | |
| dcterms.available | 2018-06-21T13:38:54Z | |
| dcterms.contributor | Hobbs, John | en_US |
| dcterms.contributor | Essig, Rouven | en_US |
| dcterms.contributor | Kiryluk, Joanna | en_US |
| dcterms.contributor | Bishai, Mary | en_US |
| dcterms.creator | Montalbano, Alyssa Rae | |
| dcterms.dateAccepted | 2018-06-21T13:38:54Z | |
| dcterms.dateSubmitted | 2018-06-21T13:38:54Z | |
| dcterms.description | Department of Physics | en_US |
| dcterms.extent | 153 pg. | en_US |
| dcterms.format | Application/PDF | en_US |
| dcterms.format | Monograph | |
| dcterms.identifier | http://hdl.handle.net/11401/78288 | |
| dcterms.issued | 2017-12-01 | |
| dcterms.language | en_US | |
| dcterms.provenance | Made available in DSpace on 2018-06-21T13:38:54Z (GMT). No. of bitstreams: 1
Montalbano_grad.sunysb_0771E_13535.pdf: 6157276 bytes, checksum: 76e0346e8adab77ece027f5b8f20327a (MD5)
Previous issue date: 12 | en |
| dcterms.subject | associated production | |
| dcterms.subject | Particle physics | |
| dcterms.subject | ATLAS | |
| dcterms.subject | Physics | |
| dcterms.subject | bottom pair production | |
| dcterms.subject | higgs boson | |
| dcterms.subject | particle physics | |
| dcterms.subject | vector boson | |
| dcterms.title | Search for the Standard Model Higgs boson produced with an associated W boson and decaying to a pair of $b$ quarks at $\sqrt{s} = 13$ TeV with the ATLAS detector | |
| dcterms.type | Dissertation | |
