Measurement of the total cross section from elastic scattering in pp collisions at root s=7 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1016/j.nuclphysb.2014.10.019

Measurement of the total cross section from elastic scattering in pp collisions at root s=7 TeV with the ATLAS detector

ATLAS Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

A measurement of the total pp cross section at the LHC at √s=7TeV is presented. In a special run with high-β{star operator}beam optics, an integrated luminosity of 80 μb-1was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the |t| range from 0.01GeV2to 0.1GeV2to extrapolate to |t|→0, the total cross section, σtot(pp→X), is measured via the optical theorem to be:σtot(pp→X)=95.35±0.38(stat.)±1.25(exp.)±0.37(extr.)mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation to |t|→0. In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73±0.14(stat.)±0.26(syst.)GeV-2.

Original language	English
Pages (from-to)	486-548
Journal	Nuclear Physics B
Volume	889
DOIs	https://doi.org/10.1016/j.nuclphysb.2014.10.019
Publication status	Published - 1 Dec 2014

Keywords

INTERSECTING STORAGE-RINGS
ANGLE ANTIPROTON-PROTON
HIGH-ENERGY
LHC ENERGY
COLLIDER
AMPLITUDES
MODEL
INTERFERENCE
DIFFRACTION
PBARP

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10.1016/j.nuclphysb.2014.10.019

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@article{061994076ae94cd78764eccd9a10ada0,

title = "Measurement of the total cross section from elastic scattering in pp collisions at root s=7 TeV with the ATLAS detector",

abstract = "A measurement of the total pp cross section at the LHC at √s=7TeV is presented. In a special run with high-β{star operator}beam optics, an integrated luminosity of 80 μb-1was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the |t| range from 0.01GeV2to 0.1GeV2to extrapolate to |t|→0, the total cross section, σtot(pp→X), is measured via the optical theorem to be:σtot(pp→X)=95.35±0.38(stat.)±1.25(exp.)±0.37(extr.)mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation to |t|→0. In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73±0.14(stat.)±0.26(syst.)GeV-2.",

keywords = "INTERSECTING STORAGE-RINGS , ANGLE ANTIPROTON-PROTON , HIGH-ENERGY , LHC ENERGY , COLLIDER , AMPLITUDES , MODEL, INTERFERENCE , DIFFRACTION , PBARP",

author = "AD Wemans and {ATLAS Collaboration}",

year = "2014",

month = dec,

day = "1",

doi = "10.1016/j.nuclphysb.2014.10.019",

language = "English",

volume = "889",

pages = "486--548",

journal = "Nuclear Physics B",

issn = "0550-3213",

publisher = "North-Holland | Elsevier",

}

TY - JOUR

T1 - Measurement of the total cross section from elastic scattering in pp collisions at root s=7 TeV with the ATLAS detector

AU - Wemans, AD

AU - ATLAS Collaboration

PY - 2014/12/1

Y1 - 2014/12/1

N2 - A measurement of the total pp cross section at the LHC at √s=7TeV is presented. In a special run with high-β{star operator}beam optics, an integrated luminosity of 80 μb-1was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the |t| range from 0.01GeV2to 0.1GeV2to extrapolate to |t|→0, the total cross section, σtot(pp→X), is measured via the optical theorem to be:σtot(pp→X)=95.35±0.38(stat.)±1.25(exp.)±0.37(extr.)mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation to |t|→0. In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73±0.14(stat.)±0.26(syst.)GeV-2.

AB - A measurement of the total pp cross section at the LHC at √s=7TeV is presented. In a special run with high-β{star operator}beam optics, an integrated luminosity of 80 μb-1was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the |t| range from 0.01GeV2to 0.1GeV2to extrapolate to |t|→0, the total cross section, σtot(pp→X), is measured via the optical theorem to be:σtot(pp→X)=95.35±0.38(stat.)±1.25(exp.)±0.37(extr.)mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation to |t|→0. In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73±0.14(stat.)±0.26(syst.)GeV-2.

KW - INTERSECTING STORAGE-RINGS

KW - ANGLE ANTIPROTON-PROTON

KW - HIGH-ENERGY

KW - LHC ENERGY

KW - COLLIDER

KW - AMPLITUDES

KW - MODEL

KW - INTERFERENCE

KW - DIFFRACTION

KW - PBARP

U2 - 10.1016/j.nuclphysb.2014.10.019

DO - 10.1016/j.nuclphysb.2014.10.019

M3 - Article

SN - 0550-3213

VL - 889

SP - 486

EP - 548

JO - Nuclear Physics B

JF - Nuclear Physics B

ER -

Measurement of the total cross section from elastic scattering in pp collisions at root s=7 TeV with the ATLAS detector

Abstract

Keywords

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