Showing papers by "Hermine Katharina Wöhri published in 2018"

Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at s√=7 TeV

Abstract: Events with no charged particles produced between the two leading jets are studied in proton-proton collisions at √ s = 7 TeV. The jets were required to have transverse momentum p T > 40 GeV and pseudorapidity 1.5 < |ηjet| < 4.7, and to have values of ηjet with opposite signs. The data used for this study were collected with the CMS detector during low-luminosity running at the LHC, and correspond to an integrated luminosity of 8 pb−1. Events with no charged particles with pT > 0.2 GeV in the interval−1 < η < 1 between the jets are observed in excess of calculations that assume no color-singlet exchange. The fraction of events with such a rapidity gap, amounting to 0.5–1% of the selected dijet sample, is measured as a function of the pT of the secondleading jet and of the rapidity separation between the jets. The data are compared to previous measurements at Tevatron, and to perturbative quantum chromodynamics calculations based on the Balitsky–Fadin–Kuraev–Lipatov evolution equations, including different modelings of the non-perturbative gap survival probability. We dedicate this paper to the memory of our colleague and friend Sasha Proskuryakov, who started this analysis but passed away before it was completed. His contribution to the study of diffractive processes at CMS is invaluable. Submitted to the European Physical Journal C c © 2017 CERN for the benefit of the CMS Collaboration. CC-BY-4.0 license ∗See Appendix A for the list of collaboration members ar X iv :s ub m it/ 20 29 00 1 [ he pex ] 5 O ct 2 01 7

Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at s = 7 TeV

Abstract: Events with no charged particles produced between the two leading jets are studied in proton-proton collisions at $\sqrt{s}=7$ $\,\text {TeV}$ . The jets were required to have transverse momentum $p_{\mathrm {T}} ^{\text {jet}}>40$ $\,\text {GeV}$ and pseudorapidity $1.5 0.2$ $\,\text {GeV}$ in the interval $-1<\eta < 1$ between the jets are observed in excess of calculations that assume no color-singlet exchange. The fraction of events with such a rapidity gap, amounting to 0.5–1% of the selected dijet sample, is measured as a function of the $p_{\mathrm {T}}$ of the second-leading jet and of the rapidity separation between the jets. The data are compared to previous measurements at the Tevatron, and to perturbative quantum chromodynamics calculations based on the Balitsky–Fadin–Kuraev–Lipatov evolution equations, including different models of the non-perturbative gap survival probability.

Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at root s = 13 TeV (vol 9, 106, 2017)

Abstract: In the original paper, figure 10 was incorrect. The correct figure is shown below. Additionally, the unparticle entries in table 3, as well as figure 4 and 5 were labelled with incorrect values of ΛU.