Measurement of proton-proton inelastic scattering cross-section at $\sqrt{s}$ = 7 TeV - INSPIRE

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Measurement of proton-proton inelastic scattering cross-section at $\sqrt{s}$ = 7 TeV

TOTEM

Collaboration

•

G. Antchev
(
- Sofiya, Inst. Nucl. Res.
)

Feb 1, 2013

7 pages

Published in:

EPL 101 (2013) 2, 21003

Published: Feb 1, 2013

DOI:

10.1209/0295-5075/101/21003

Report number:

TOTEM-2012–003,
CERN-PH-EP-2012-352

Experiments:

CERN-LHC-TOTEM

View in:

CERN Document Server

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Abstract: (IOP)

The TOTEM experiment at the LHC has measured the inelastic proton-proton cross-section at

\sqrt {s}= 7\,{\mathrm { TeV}}

in a β* = 90 m run with low inelastic pile-up. The measurement was based on events with at least one charged particle in the T2 telescope acceptance of 5.3 < |η| < 6.5 in pseudorapidity. Combined with data from the T1 telescope, covering 3.1 < |η| < 4.7, the cross-section for inelastic events with at least one |η| ⩽ 6.5 final-state particle was determined to be (70.5 ± 2.9) mb. This cross-section includes all central diffractive events of which maximally 0.25 mb is estimated to escape the detection of the telescopes. Based on models for low mass diffraction, the total inelastic cross-section was deduced to be (73.7 ± 3.4) mb. An upper limit of 6.31 mb at 95% confidence level on the cross-section for events with diffractive masses below 3.4 GeV was obtained from the difference between the overall inelastic cross-section obtained by TOTEM using elastic scattering and the cross-section for inelastic events with at least one |η| ⩽ 6.5 final-state particle.

13.60.Hb
experimental results
p p: inelastic scattering
cross section: measured
cross section: inelastic scattering
diffraction
TOTEM
charged particle
CERN LHC Coll
acceptance

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