{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.88293.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2624308"}},{"@id":"https://doi.org/10.1103/PhysRevD.108.092004","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2023","description":"We present, for the first time at LHC energies, the forward rapidity gap spectra from  proton-lead collisions for both proton and lead dissociation processes. The analysis is performed over 10.4 units of pseudorapidity at a center-of-mass energy of $\\sqrt{s_{\\mathrm{NN}}}=8.16~\\text{TeV}$, i.e. almost 300 times higher than previous measurements of diffractive production in proton-nucleus collisions. For lead dissociation processes, which corresspond to the pomeron-lead event topology, the EPOS-LHC predictions are a factor of two below the unfolded data but the model does give a reasonable description of the shape of the spectrum. For the pomeron-proton topology the EPOS-LHC, QGSJET II and HIJING generator predictions are all at least a factor of five below the data. This effect can be explained by a significant contribution of ultra-peripheral photoproduction events mimicking the signature of diffractive processes. The obtained data may be of significant help in understanding the high energy limit of QCD and modeling cosmic ray air showers.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t1","@type":"Dataset","description":"Differential cross section for events with Pomeron-Lead ($\\mathrm{I\\!P}\\mathrm{Pb}$) topology obtained at the reconstruction level for $|\\eta| < 3$ region. Forward...","name":"Figure 2, left"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t2","@type":"Dataset","description":"Differential cross section for events with Pomeron-Proton ($\\mathrm{I\\!P}\\mathrm{p} + \\gamma \\mathrm{p}$) topology obtained at the reconstruction level for $|\\eta| <...","name":"Figure 2, right"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t3","@type":"Dataset","description":"Reconstruction level differential cross section spectla, obtained for the central acceptance, $|\\eta| < 3$, for events with Pomeron-Lead ($\\mathrm{I\\!P}\\mathrm{Pb}$) topology...","name":"Figure 3, left"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t4","@type":"Dataset","description":"Reconstruction level differential cross section spectla, obtained for the central acceptance, $|\\eta| < 3$, for events with Pomeron-Proton ($\\mathrm{I\\!P}\\mathrm{p} +...","name":"Figure 3, right"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t5","@type":"Dataset","description":"The number of high purity tracksin the first $\\eta$ bin after a gap of $4.5 \\leq \\Delta\\eta^F < 5.0$ for...","name":"Figure 4, left"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t6","@type":"Dataset","description":"The transeverse momentum of high purity tracksin the first $\\eta$ bin after a gap of $4.5 \\leq \\Delta\\eta^F < 5.0$...","name":"Figure 4, central"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t7","@type":"Dataset","description":"The total energy of all Particle Flow candidatesin the first $\\eta$ bin after a gap of $4.5 \\leq \\Delta\\eta^F <...","name":"Figure 4, right"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t8","@type":"Dataset","description":"Unfolded diffraction enhanced differential cross section for events with Pomeron-Lead ($\\mathrm{I\\!P}\\mathrm{Pb}$) topology, defined on the region $|\\eta| < 5.2$, compared...","name":"Figure 5, left"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t9","@type":"Dataset","description":"Unfolded diffraction enhanced differential cross section for events with Pomeron-Proton ($\\mathrm{I\\!P}\\mathrm{p} + \\gamma \\mathrm{p}$) topology, defined on the region $|\\eta|...","name":"Figure 5, right"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t10","@type":"Dataset","description":"Unfolded diffractive enhanced differential cross section spectla for events with Pomeron-Lead ($\\mathrm{I\\!P}\\mathrm{Pb}$) topology, compared to the to the hadron-level EPOS-LHC...","name":"Figure 6, left"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t11","@type":"Dataset","description":"Unfolded diffractive enhanced differential cross section spectla for events with Pomeron-Proton ($\\mathrm{I\\!P}\\mathrm{p} + \\gamma \\mathrm{p}$) topology, compared to the to...","name":"Figure 6, right"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t12","@type":"Dataset","description":"Unfolded diffractive enhanced differential cross section spectla for events with Pomeron-Lead ($\\mathrm{I\\!P}\\mathrm{Pb}$) topology, compared to the to the hadron-level QGSJET...","name":"Figure 7, left"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t13","@type":"Dataset","description":"Unfolded diffractive enhanced differential cross section spectla for events with Pomeron-Proton ($\\mathrm{I\\!P}\\mathrm{p} + \\gamma \\mathrm{p}$) topology, compared to the to...","name":"Figure 7, right"},{"@id":"https://doi.org/10.17182/hepdata.88293.v1/t14","@type":"Dataset","description":"Reconstruction level diffraction enhanced differential cross section spectrum for Pomeron-Proton ($\\mathrm{I\\!P}\\mathrm{p} + \\gamma \\mathrm{p}$) topology corrected for the contribution from...","name":"Figure A1"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2624308?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/88293"}],"inLanguage":"en","name":"First measurement of the forward rapidity gap distribution in pPb collisions at $\\sqrt{s_\\mathrm{NN}}$ = 8.16 TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2624308?version=1","version":1}