Search for new phenomena in dijet events using 37 fb(-1) of pp collision data collected at root s=13 TeV with the ATLAS detector [Elektronisk resurs]
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Aaboud, M. (författare)
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- Bergeås Kuutmann, Elin 1980- (författare)
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Alternativt namn: Kuutmann, Elin Bergeås, 1980-
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Bokan, Petar (författare)
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Brenner, Richard (författare)
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Ekelöf, Tord (författare)
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Ellert, Mattias (författare)
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Ferrari, Arnaud (författare)
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Gradin, Joakim (författare)
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Isacson, Max (författare)
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Mårtensson, Mikael (författare)
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Öhman, Henrik (författare)
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Rangel-Smith, Camilla (författare)
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De Bruin, Pedro Sales (författare)
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Zwalinski, L. (författare)
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Uppsala universitet Teknisk-naturvetenskapliga vetenskapsområdet (utgivare)
- 2017
- Engelska.
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Ingår i: Physical Review D. - 2470-0010. ; 96:5
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Sammanfattning
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- Dijet events are studied in the proton-proton collision dataset recorded at root s = 13 TeV with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to integrated luminosities of 3.5 fb(-1) and 33.5 fb(-1) respectively. Invariant mass and angular distributions are compared to background predictions and no significant deviation is observed. For resonance searches, a new method for fitting the background component of the invariant mass distribution is employed. The dataset is then used to set upper limits at a 95% confidence level on a range of new physics scenarios. Excited quarks with masses below 6.0 TeV are excluded, and limits are set on quantum black holes, heavy W' bosons, W* bosons, and a range of masses and couplings in a Z' dark matter mediator model. Model-independent limits on signals with a Gaussian shape are also set, using a new approach allowing factorization of physics and detector effects. From the angular distributions, a scale of new physics in contact interaction models is excluded for scenarios with either constructive or destructive interference. These results represent a substantial improvement over those obtained previously with lower integrated luminosity.
Ämnesord
- Natural Sciences (hsv)
- Physical Sciences (hsv)
- Subatomic Physics (hsv)
- Naturvetenskap (hsv)
- Fysik (hsv)
- Subatomär fysik (hsv)
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