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Transverse momentum broadening of hadrons produced in semi-inclusive deep-inelastic scattering on nuclei

Authors :
V. A. Korotkov
Wouter Deconinck
T. Keri
G. Elbakian
W.-D. Nowak
M. Hartig
S. Frullani
P. Di Nezza
D. Veretennikov
S. I. Manaenkov
Alessandra Fantoni
V. A. Gapienko
Cynthia Marie Hadjidakis
M. Hoek
Y. Miyachi
L. Manfré
A. Martinez de la Ossa
A. López Ruiz
P. E. Reimer
T. A. Shibata
G. Hill
A. Nass
F. Sanftl
V. Vikhrov
D. Hasch
M. Statera
Y. Van Haarlem
S. Belostotski
M. Capiluppi
V. Bryzgalov
D. Zeiler
C. Vogel
Xianguo Lu
M. Negodaev
W. Augustyniak
Ferdinando Giordano
M. Diefenthaler
H. Marukyan
H. S. Jo
B. Seitz
E. Nappi
Vitaly Shutov
H. P. Blok
A. Hillenbrand
Y. Imazu
J. Burns
David Mahon
Stephen V. Gliske
P. B. van der Nat
Morgan Murray
Wolfgang Lorenzon
Andreas Schäfer
L. Felawka
Frank Ellinghaus
Y. Salomatin
N. Akopov
E. R. Kinney
B. Marianski
E. De Sanctis
Ivana Hristova
L. Lagamba
Y. Naryshkin
J. J. M. Steijger
Michael Düren
M. Stancari
S. Yaschenko
C. Bonomo
E. Cisbani
H. E. Jackson
G. P. Capitani
R. Perez-Benito
B. Q. Ma
F. Garibaldi
P. F. Dalpiaz
R. Lamb
B. Ball
K. Rith
Z. Akopov
R. De Leo
Shan Wang
W. Yu
P. Lenisa
L. De Nardo
A. Trzcinski
Zhenyu Ye
J. Dreschler
I. Vilardi
H. Böttcher
V. Gharibyan
C. Riedl
Andreas Mussgiller
A. Rostomyan
A. R. Reolon
A. Avetissian
G. Ciullo
Arne Vandenbroucke
Riccardo Fabbri
E. Avetisyan
S. Joosten
A. Kisselev
V. Kozlov
A. Jgoun
J. G. Rubin
I. Lehmann
K. P. Schüler
Nicola Bianchi
P. Zupranski
L. A. Linden-Levy
J. Stewart
G. Rosner
A. Airapetian
F. Stinzing
G. Schnell
L. Lapikás
Valeria Muccifora
M. Contalbrigo
Hengqiang Ye
B. Zihlmann
L. L. Pappalardo
Martin Raithel
Alexander Borissov
Hasko Stenzel
Michael Tytgat
E. C. Aschenauer
S. Taroian
C. A. Miller
D. Gabbert
Ralf Kaiser
M. Ehrenfried
E. Steffens
N. C. R. Makins
N. Pickert
Dirk Ryckbosch
A. Movsisyan
Y. Holler
G. Karyan
Y. J. Mao
P. Kravchenko
X. R. Lu
C. B. Van Hulse
A. Ivanilov
Source :
PHYSICS LETTERS B, Physics letters / B 684, 114-118 (2010). doi:10.1016/j.physletb.2010.01.020
Publication Year :
2010
Publisher :
Elsevier BV, 2010.

Abstract

The first direct measurement of the dependence on target nuclear mass of the average squared transverse momentum of pi+, pi-, and K+ mesons from deep-inelastic lepton scattering is obtained as a function of several kinematic variables. The data were accumulated at the HERMES experiment at DESY, in which the HERA 27.6 GeV lepton beam was scattered off several nuclear gas targets. The average squared transverse momentum was clearly observed to increase with atomic mass number. The effect increases as a function of Q**2 and x and remains constant as a function of both the virtual photon energy nu and the fractional hadron energy z, except that it vanishes as z approaches unity.<br />Comment: 6 pages, 2 figures

Details

ISSN :
03702693
Volume :
684
Database :
OpenAIRE
Journal :
Physics Letters B
Accession number :
edsair.doi.dedup.....f1fb9da158bdaeaca10d16d927c3d183