## 抄録

A dedicated sample of Large Hadron Collider proton-proton collision data at centre-of-mass energy s = 8 TeV is used to study inclusive single diffractive dissociation, pp → X p. The intact final-state proton is reconstructed in the ATLAS ALFA forward spectrometer, while charged particles from the dissociated system X are measured in the central detector components. The fiducial range of the measurement is −4.0 < log_{10}ξ < −1.6 and 0.016 < |t| < 0.43 GeV^{2}, where ξ is the proton fractional energy loss and t is the squared four-momentum transfer. The total cross section integrated across the fiducial range is 1.59 ± 0.13 mb. Cross sections are also measured differentially as functions of ξ, t, and ∆η, a variable that characterises the rapidity gap separating the proton and the system X. The data are consistent with an exponential t dependence, dσ/dt ∝ e^{Bt} with slope parameter B = 7.65 ± 0.34 GeV^{−2}. Interpreted in the framework of triple Regge phenomenology, the ξ dependence leads to a pomeron intercept of α(0) = 1.07 ± 0.09. [Figure not available: see fulltext.]

本文言語 | 英語 |
---|---|

論文番号 | 42 |

ジャーナル | Journal of High Energy Physics |

巻 | 2020 |

号 | 2 |

DOI | |

出版ステータス | 出版済み - 2月 1 2020 |

## !!!All Science Journal Classification (ASJC) codes

- 核物理学および高エネルギー物理学