Measurement of the forward charged-particle pseudorapidity density in pp collisions at root s=7TeV with the TOTEM experiment

Show full item record

Permalink

http://hdl.handle.net/10138/37169

Citation

Antchev , G , Brucken , E , Garcia , F , Heino , J , Hilden , T , Kurvinen , L K-P , Lauhakangas , R , Mäki , T , Oljemark , F , Orava , R , Österberg , K , Saarikko , H , Welti , J & TOTEM Collaboration 2012 , ' Measurement of the forward charged-particle pseudorapidity density in pp collisions at root s=7TeV with the TOTEM experiment ' Europhysics Letters , vol 98 , no. 3 , pp. 31002 . , 10.1209/0295-5075/98/31002

Title: Measurement of the forward charged-particle pseudorapidity density in pp collisions at root s=7TeV with the TOTEM experiment
Author: Antchev, G.; Brucken, E.; Garcia, F.; Heino, J.; Hilden, T.; Kurvinen, Leo Kari-Pekka; Lauhakangas, R.; Mäki, T.; Oljemark, F.; Orava, R.; Österberg, K.; Saarikko, H.; Welti, J.; TOTEM Collaboration
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics (HIP) (-2009)
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Belongs to series: Europhysics Letters
ISSN: 0295-5075
Abstract: The TOTEM experiment has measured the charged-particle pseudorapidity density dNch/dη in pp collisions at \sqrt{s} = 7\,{\rm TeV} for 5.3<|η|<6.4 in events with at least one charged particle with transverse momentum above 40 MeV/c in this pseudorapidity range. This extends the analogous measurement performed by the other LHC experiments to the previously unexplored forward η region. The measurement refers to more than 99% of non-diffractive processes and to single and double diffractive processes with diffractive masses above ~3.4 GeV/c2, corresponding to about 95% of the total inelastic cross-section. The dNch/dη has been found to decrease with |η|, from 3.84 ± 0.01(stat) ± 0.37(syst) at |η|=5.375 to 2.38±0.01(stat)±0.21(syst) at |η|=6.375. Several MC generators have been compared to data; none of them has been found to fully describe the measurement.
Peer review status: Peer reviewed
URI: http://hdl.handle.net/10138/37169
Date: 2012-05-08
Subject: EXTENSIVE AIR-SHOWERS
ENERGY
LHC
DETECTORS
SPECTRA
TEV
GEM
114 Physical sciences


Files in this item

Total number of downloads: Loading...

Files Size Format View
0295_5075_98_3_31002.pdf 416.3Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record