Search for new particles decaying into dijets in proton-antiproton collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:math>

Aaltonen, T.; Adelman, J.; Akimoto, T.; González, B. Álvarez; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos̆, J.; Apollinari, G.; Apresyan, A.; Arisawa, T.; Artikov, A.; Ashmanskas, W.; Attal, A.; Aurisano, A.; Azfar, F.; Azzurri, P.; Badgett, W.; Barbaro‐Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Bartsch, V.; Bauer, G.; Beauchemin, P. H.; Bedeschi, F.; Beecher, D.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Beringer, J.; Bhatti, A.; Binkley, M.; Bisello, D.; Bizjak, I.; Blair, R. E.; Blocker, C.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Boisvert, V.; Bolla, G.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brau, B.; Bridgeman, A.; Brigliadori, L.; Bromberg, C.; Brubaker, E.; Budagov, J.; Budd, H. S.; Budd, S.; Bürke, S.; Burkett, K.; Busetto, G.; Bussey, P.; Buzatu, A.; Byrum, K. 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L.; Wagner, W.; Wagner-Kuhr, J.; Wakisaka, T.; Wallny, R.; Wang, S. M.; Warburton, A.; Waters, D.; Weinberger, M.; Weinelt, J.; Wester, W. C.; Whitehouse, B.; Whiteson, D.; Wicklund, A. B.; Wicklund, E.; Wilbur, S.; Williams, G.; Williams, H. H.; Wilson, P.; Winer, B. L.; Wittich, P.; Wolbers, S.; Wolfe, C.; Wright, T.; Wu, X.; Würthwein, F.; Xie, S.; Yagil, A.; Yamamoto, K.; Yamaoka, J.; Yang, U. K.; Yang, Y. C.; Yao, Wei-Ming; Yeh, G. P.; Yoh, J.; Yorita, K.; Yoshida, T.; Yu, G. B.; Yu, I.; Yu, S. S.; Yun, J. C.; Zanello, L.; Zanetti, A.; Zhang, X.; Zheng, Y.; Zucchelli, S.

doi:10.1103/physrevd.79.112002

Cited by 218 publications

(151 citation statements)

References 46 publications

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“…It has been shown that this function fits well the QCD mass distribution of PYTHIA, HERWIG, and NLO pQCD predictions for pp collisions at √ s = 1.96 TeV [6]. Also, MC studies using PYTHIA in ATLAS [7] demonstrate that this function describes the QCD mass spectrum well, with a χ 2 /NDF of 27.0/22 over the dijet mass range of 200 < m j j < 1900 GeV, as is shown in Figure 3.…”

Section: Background Determinationmentioning

confidence: 53%

Two Early Exotic searches with dijet events at ATLAS

Rezvani¹

2011

Proceedings of Kruger 2010: Workshop on Discovery Physics at the LHC — PoS(Kruger 2010)

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This document summarises two exotic searches in dijet events. In the first search, narrow resonances of the dijet invariant mass from the decay of new heavy particles have been investigated. An integrated luminosity of 3.1 pb −1 from 7 TeV collision data in LHC has been used. No significant evidence of new particles is found, and upper limits have been set on the product of the cross-section and detector acceptance. The theoretical model considered is the composite excited quark production, decaying to dijets. A 95% confidence-level mass exclusion region of the composite excited quark q* has been determined (0.50 < m q * < 1.53 TeV). In the second search, dijet centrality ratio distributions have been measured in the ATLAS detector, with an integrated luminosity of 3.1 pb −1 . A search for quark compositeness using the model of quark 4-fermion contact interactions has been performed, and such interactions have been excluded at 95% CL for a compositeness scale below 2.0 TeV.

show abstract

Section: Background Determinationmentioning

confidence: 53%

Two Early Exotic searches with dijet events at ATLAS

Rezvani¹

2011

Proceedings of Kruger 2010: Workshop on Discovery Physics at the LHC — PoS(Kruger 2010)

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show abstract

“…CDF has published studies both of the angular distribution of the dijets [8] and of a possible resonant structure in the dijet mass spectrum [9]. In both cases it is nontrivial for us to compare these results with the signal we might expect.…”

Section: Scalar Exchangementioning

confidence: 73%

“…All this is preliminary, however, also because the resonance may be within the accessible range. Indeed the same resonance search in [9] could be of importance to us. The problem in this case, however, is that the published limits concern only narrow resonances, when the width is within the resolution, while we are dealing with the opposite case.…”

Section: Scalar Exchangementioning

confidence: 99%

Multi-muon events at the Tevatron: a hidden sector from hadronic collisions

Barbieri¹,

Hall²,

Rychkov³

et al. 2009

J. Phys. G: Nucl. Part. Phys.

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We show an explicit attempt to interpret the multi-muon anomaly recently claimed by the CDF collaboration in terms of a light scalar singlet φ which communicates with the standard quarks either through a heavy scalar or a heavy fermion exchange. Building on arXiv:0810.5730, that suggested a singlet φ with a chain decay into a final state made of four ττ pairs, we can simulate most of the muon properties of the selected sample of events. Some of these properties adhere rather well to the already published data; others should allow a decisive test of the proposed interpretation. Assuming that the test is positively passed, we show how the PAMELA excess can be fitted by the annihilation of a TeV Dark Matter particle that communicates with the Standard Model via the new light singlet(s).

show abstract

“…These results are consistent with the SM predictions allowing to place an upper limit on the signal cross section times the corresponding branching fraction of the process pp → Z → µ + µ − (e + e − ). 8 There are also searches for dijet resonances and monojets plus missing energy that receive additional contributions from the presence of a Z boson, both at the LHC and Tevatron colliders, and hence, they can be used to place constraints on this kind of models as well [71][72][73].…”

Section: Jhep04(2015)175mentioning

confidence: 99%

Isospin violating dark matter in Stückelberg portal scenarios

Lozano

Peiró

Soler

2015

J. High Energ. Phys.

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Hidden sector scenarios in which dark matter (DM) interacts with the Standard Model matter fields through the exchange of massive Z bosons are well motivated by certain string theory constructions. In this work, we thoroughly study the phenomenological aspects of such scenarios and find that they present a clear and testable consequence for direct DM searches. We show that such string motivated Stückelberg portals naturally lead to isospin violating interactions of DM particles with nuclei. We find that the relations between the DM coupling to neutrons and protons for both, spin-independent (f n /f p ) and spin-dependent (a n /a p ) interactions, are very flexible depending on the charges of the quarks under the extra U(1) gauge groups. We show that within this construction these ratios are generically different from ±1 (i.e. different couplings to protons and neutrons) leading to a potentially measurable distinction from other popular portals. Finally, we incorporate bounds from searches for dijet and dilepton resonances at the LHC as well as LUX bounds on the elastic scattering of DM off nucleons to determine the experimentally allowed values of f n /f p and a n /a p .

show abstract

Search for new particles decaying into dijets in proton-antiproton collisions ats=1.96 TeV

Cited by 218 publications

References 46 publications

Two Early Exotic searches with dijet events at ATLAS

Two Early Exotic searches with dijet events at ATLAS

Multi-muon events at the Tevatron: a hidden sector from hadronic collisions

Isospin violating dark matter in Stückelberg portal scenarios

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