Measurement of the forward charged particle pseudorapidity density in pp collisions at $\sqrt{s} = 8$ TeV using a displaced interaction point - INSPIRE

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Measurement of the forward charged particle pseudorapidity density in pp collisions at $\sqrt{s} = 8$ TeV using a displaced interaction point

TOTEM

Collaboration

•

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

Nov 18, 2014

9 pages

Published in:

Eur.Phys.J.C 75 (2015) 3, 126

Published: Mar 17, 2015

e-Print:

1411.4963 [hep-ex]

DOI:

10.1140/epjc/s10052-015-3343-7

Report number:

CERN-PH-EP-2014-260

Experiments:

CERN-LHC-TOTEM

View in:

reference search33 citations

Citations per year

Abstract: (Springer)

The pseudorapidity density of charged particles dN

_{ ch }

/d

\eta

is measured by the TOTEM experiment in proton–proton collisions at

\sqrt{s} = 8

TeV within the range

3.9<\eta <4.7

and

-6.95<\eta <-6.9

. Data were collected in a low intensity LHC run with collisions occurring at a distance of 11.25 m from the nominal interaction point. The data sample is expected to include 96–97 % of the inelastic proton–proton interactions. The measurement reported here considers charged particles with

p_T>0

MeV/c, produced in inelastic interactions with at least one charged particle in

-7<\eta <-6

or

3.7<\eta <4.8

. The dN

_{ ch }

/d

\eta

has been found to decrease with

|\eta |

, from 5.11

\pm

0.73 at

\eta =3.95

to 1.81

\pm

0.56 at

\eta =-

6.925. Several Monte Carlo generators are compared to the data and are found to be within the systematic uncertainty of the measurement.

Note:

9 pages, 5 figures, submitted to EPJ C

charged particle: forward production
rapidity: density
p p: scattering
charged particle: rapidity spectrum
numerical calculations: Monte Carlo
experimental results
CERN LHC Coll
TOTEM
8000 GeV-cms

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