Measurement of single-diffractive dijet production in proton–proton collisions at $$\sqrt{s} = 8\,\text {Te}\text {V}$$ with the CMS and TOTEM experiments
–1. The single-diffractive dijet cross section $$σ^{\text {pX}}_{\text {jj}}$$, in the kinematic region ξ < 0.1, 0.03 < |t| < 1GeV2, with at least two jets with transverse momentum $$p_T$$ > 40 GeV, and pseudorapidity |η| < 4.4, is 21.7 ± 0.9 (stat)$$^{+3.0}_{–3.3}$$(syst) ± 0.9 (lumi) nb. The ratio of the single-diffractive to inclusive dijet yields, normalised per unit of ξ, is presented as a function of x, the longitudinal momentum fraction of the proton carried by the struck parton. The ratio in the kinematic region defined above, for x values in the range –2.9 ≤ log10 x ≤ –1.6, is $$R = (σ^{\text {pX}}_ {\text {jj}} /Δξ)/σ_{\text {jj}}$$ = 0.025 ± 0.001 (stat) ± 0.003 (syst), where $$σ^{\text {pX}}_ {\text {jj}}$$ and $$σ_{\text {jj}}$$ are the single-diffractive and inclusive dijet cross sections, respectively. The results are compared with predictions from models of diffractive and nondiffractive interactions. Monte Carlo predictions based on the HERA diffractive parton distribution functions agree well with the data when corrected for the effect of soft rescattering between the spectator partons.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); Kavli Foundation; Nvidia Corporation; SuperMicro Corporation; Welch Foundation; Weston Havens Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Contributing Organization:
- CMS Collaboration; TOTEM Collaboration
- Grant/Contract Number:
- AC02-07CH11359; C-1845; AC02-76SF00515
- OSTI ID:
- 1606563
- Alternate ID(s):
- OSTI ID: 1768038
- Report Number(s):
- FERMILAB-PUB-20-131-CMS; CMS-FSQ-12-033; TOTEM-2020-001; CERN-EP-2019-260; oai:inspirehep.net:1782637; TRN: US2104532
- Journal Information:
- European Physical Journal. C, Particles and Fields, Vol. 80, Issue 12; ISSN 1434-6044
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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