Hard color-singlet exchange in dijet events in proton-proton collisions at $$\sqrt{s} = 13$$ TeV

Journal Article · Mon Jul 11 00:00:00 EDT 2022 · SciPost Physics Proceedings

DOI:https://doi.org/10.21468/SciPostPhysProc.8.015· OSTI ID:1875607

Baldenegro Barrera, Cristian ^[1]

---

1. University of Kansas

We present a measurement of events with two jets separated by a pseudorapidity gap (jet-gap-jet). The signature is expected from hard color-singlet exchange. The jets are reconstructed with the CMS detector. The highest p_\text{T} $p_{\text{T}}$ jets have p_\text{T}^\text{jet1,2} > 40 $p_{\text{T}}^{\text{jet1,2}}>40$ GeV, with 1.4 < |\eta^\text{jet1,2}| < 4.7 $1.4<\left|{\eta }^{\text{jet1,2}}\right|<4.7$ and \eta^\text{jet1} \eta^\text{jet2} < 0 ${\eta }^{\text{jet1}}{\eta }^{\text{jet2}}<0$ . We measure the fraction of color-singlet exchange dijet events, f_\text{CSE} $f_{\text{CSE}}$ , and compare it to previous measurements and to predictions. We also study jet-gap-jet events where the colliding protons remain intact and are detected with the Roman pots of TOTEM. A larger fraction f_\text{CSE} $f_{\text{CSE}}$ is found in the latter subsample.

• Sponsoring Organization: USDOE
• Grant/Contract Number: SC0019389
• OSTI ID: 1875607
• Journal Information: SciPost Physics Proceedings, Journal Name: SciPost Physics Proceedings Journal Issue: 8; ISSN 2666-4003
• Publisher: Stichting SciPost
• Country of Publication: Netherlands
• Language: English