Cold-nuclear-matter effects on heavy-quark production in d+Au collisions at sqrt[S(NN)]=200 GeV.
The PHENIX experiment has measured electrons and positrons at midrapidity from the decays of hadrons containing charm and bottom quarks produced in d+Au and p+p collisions at sqrt[S(NN)]=200 GeV in the transverse-momentum range 0.85 ≤ p(T)(e) ≤ 8.5 GeV/c. In central d+Au collisions, the nuclear modification factor R(dA) at 1.5<p(T)<5 GeV/c displays evidence of enhancement of these electrons, relative to those produced in p+p collisions, and shows that the mass-dependent Cronin enhancement observed at the Relativistic Heavy Ion Collider extends to the heavy D meson family. A comparison with the neutral-pion data suggests that the difference in cold-nuclear-matter effects on light- and heavy-flavor mesons could contribute to the observed differences between the π(0) and heavy-flavor-electron nuclear modification factors R(AA).
University of Colorado, Boulder, Colorado 80309, USA.
A
A
Adare
C
C
Aidala
N N
NN
Ajitanand
Y
Y
Akiba
H
H
Al-Bataineh
J
J
Alexander
A
A
Angerami
K
K
Aoki
N
N
Apadula
Y
Y
Aramaki
E T
ET
Atomssa
R
R
Averbeck
T C
TC
Awes
B
B
Azmoun
V
V
Babintsev
M
M
Bai
G
G
Baksay
L
L
Baksay
K N
KN
Barish
B
B
Bassalleck
A T
AT
Basye
S
S
Bathe
V
V
Baublis
C
C
Baumann
A
A
Bazilevsky
S
S
Belikov
R
R
Belmont
R
R
Bennett
A
A
Berdnikov
Y
Y
Berdnikov
J H
JH
Bhom
D S
DS
Blau
J S
JS
Bok
K
K
Boyle
M L
ML
Brooks
H
H
Buesching
V
V
Bumazhnov
G
G
Bunce
S
S
Butsyk
S
S
Campbell
A
A
Caringi
C-H
CH
Chen
C Y
CY
Chi
M
M
Chiu
I J
IJ
Choi
J B
JB
Choi
R K
RK
Choudhury
P
P
Christiansen
T
T
Chujo
P
P
Chung
O
O
Chvala
V
V
Cianciolo
Z
Z
Citron
B A
BA
Cole
Z
Z
Conesa Del Valle
M
M
Connors
M
M
Csanád
T
T
Csörgő
T
T
Dahms
S
S
Dairaku
I
I
Danchev
K
K
Das
A
A
Datta
G
G
David
M K
MK
Dayananda
A
A
Denisov
A
A
Deshpande
E J
EJ
Desmond
K V
KV
Dharmawardane
O
O
Dietzsch
A
A
Dion
M
M
Donadelli
O
O
Drapier
A
A
Drees
K A
KA
Drees
J M
JM
Durham
A
A
Durum
D
D
Dutta
L
L
D'Orazio
S
S
Edwards
Y V
YV
Efremenko
F
F
Ellinghaus
T
T
Engelmore
A
A
Enokizono
H
H
En'yo
S
S
Esumi
B
B
Fadem
D E
DE
Fields
M
M
Finger
M
M
Finger
F
F
Fleuret
S L
SL
Fokin
Z
Z
Fraenkel
J E
JE
Frantz
A
A
Franz
A D
AD
Frawley
K
K
Fujiwara
Y
Y
Fukao
T
T
Fusayasu
I
I
Garishvili
A
A
Glenn
H
H
Gong
M
M
Gonin
Y
Y
Goto
R
R
Granier de Cassagnac
N
N
Grau
S V
SV
Greene
G
G
Grim
M
M
Grosse Perdekamp
T
T
Gunji
H-Å
HÅ
Gustafsson
J S
JS
Haggerty
K I
KI
Hahn
H
H
Hamagaki
J
J
Hamblen
R
R
Han
J
J
Hanks
E
E
Haslum
R
R
Hayano
X
X
He
M
M
Heffner
T K
TK
Hemmick
T
T
Hester
J C
JC
Hill
M
M
Hohlmann
W
W
Holzmann
K
K
Homma
B
B
Hong
T
T
Horaguchi
D
D
Hornback
S
S
Huang
T
T
Ichihara
R
R
Ichimiya
Y
Y
Ikeda
K
K
Imai
M
M
Inaba
D
D
Isenhower
M
M
Ishihara
M
M
Issah
D
D
Ivanischev
Y
Y
Iwanaga
B V
BV
Jacak
J
J
Jia
X
X
Jiang
J
J
Jin
B M
BM
Johnson
T
T
Jones
K S
KS
Joo
D
D
Jouan
D S
DS
Jumper
F
F
Kajihara
J
J
Kamin
J H
JH
Kang
J
J
Kapustinsky
K
K
Karatsu
M
M
Kasai
D
D
Kawall
M
M
Kawashima
A V
AV
Kazantsev
T
T
Kempel
A
A
Khanzadeev
K M
KM
Kijima
J
J
Kikuchi
A
A
Kim
B I
BI
Kim
D J
DJ
Kim
E-J
EJ
Kim
Y-J
YJ
Kim
E
E
Kinney
A
A
Kiss
E
E
Kistenev
D
D
Kleinjan
L
L
Kochenda
B
B
Komkov
M
M
Konno
J
J
Koster
A
A
Král
A
A
Kravitz
G J
GJ
Kunde
K
K
Kurita
M
M
Kurosawa
Y
Y
Kwon
G S
GS
Kyle
R
R
Lacey
Y S
YS
Lai
J G
JG
Lajoie
A
A
Lebedev
D M
DM
Lee
J
J
Lee
K B
KB
Lee
K S
KS
Lee
M J
MJ
Leitch
M A L
MA
Leite
X
X
Li
P
P
Lichtenwalner
P
P
Liebing
L A
LA
Linden Levy
T
T
Liška
H
H
Liu
M X
MX
Liu
B
B
Love
D
D
Lynch
C F
CF
Maguire
Y I
YI
Makdisi
M D
MD
Malik
V I
VI
Manko
E
E
Mannel
Y
Y
Mao
H
H
Masui
F
F
Matathias
M
M
McCumber
P L
PL
McGaughey
N
N
Means
B
B
Meredith
Y
Y
Miake
T
T
Mibe
A C
AC
Mignerey
K
K
Miki
A
A
Milov
J T
JT
Mitchell
A K
AK
Mohanty
H J
HJ
Moon
Y
Y
Morino
A
A
Morreale
D P
DP
Morrison
T V
TV
Moukhanova
T
T
Murakami
J
J
Murata
S
S
Nagamiya
J L
JL
Nagle
M
M
Naglis
M I
MI
Nagy
I
I
Nakagawa
Y
Y
Nakamiya
K R
KR
Nakamura
T
T
Nakamura
K
K
Nakano
S
S
Nam
J
J
Newby
M
M
Nguyen
M
M
Nihashi
R
R
Nouicer
A S
AS
Nyanin
C
C
Oakley
E
E
O'Brien
S X
SX
Oda
C A
CA
Ogilvie
M
M
Oka
K
K
Okada
Y
Y
Onuki
A
A
Oskarsson
M
M
Ouchida
K
K
Ozawa
R
R
Pak
V
V
Pantuev
V
V
Papavassiliou
I H
IH
Park
S K
SK
Park
W J
WJ
Park
S F
SF
Pate
H
H
Pei
J-C
JC
Peng
H
H
Pereira
D Yu
DY
Peressounko
R
R
Petti
C
C
Pinkenburg
R P
RP
Pisani
M
M
Proissl
M L
ML
Purschke
H
H
Qu
J
J
Rak
I
I
Ravinovich
K F
KF
Read
S
S
Rembeczki
K
K
Reygers
V
V
Riabov
Y
Y
Riabov
E
E
Richardson
D
D
Roach
G
G
Roche
S D
SD
Rolnick
M
M
Rosati
C A
CA
Rosen
S S E
SS
Rosendahl
P
P
Ružička
B
B
Sahlmueller
N
N
Saito
T
T
Sakaguchi
K
K
Sakashita
V
V
Samsonov
S
S
Sano
T
T
Sato
S
S
Sawada
K
K
Sedgwick
J
J
Seele
R
R
Seidl
R
R
Seto
D
D
Sharma
I
I
Shein
T-A
TA
Shibata
K
K
Shigaki
M
M
Shimomura
K
K
Shoji
P
P
Shukla
A
A
Sickles
C L
CL
Silva
D
D
Silvermyr
C
C
Silvestre
K S
KS
Sim
B K
BK
Singh
C P
CP
Singh
V
V
Singh
M
M
Slunečka
R A
RA
Soltz
W E
WE
Sondheim
S P
SP
Sorensen
I V
IV
Sourikova
P W
PW
Stankus
E
E
Stenlund
S P
SP
Stoll
T
T
Sugitate
A
A
Sukhanov
J
J
Sziklai
E M
EM
Takagui
A
A
Taketani
R
R
Tanabe
Y
Y
Tanaka
S
S
Taneja
K
K
Tanida
M J
MJ
Tannenbaum
S
S
Tarafdar
A
A
Taranenko
H
H
Themann
D
D
Thomas
T L
TL
Thomas
M
M
Togawa
A
A
Toia
L
L
Tomášek
H
H
Torii
R S
RS
Towell
I
I
Tserruya
Y
Y
Tsuchimoto
C
C
Vale
H
H
Valle
H W
HW
van Hecke
E
E
Vazquez-Zambrano
A
A
Veicht
J
J
Velkovska
R
R
Vértesi
M
M
Virius
V
V
Vrba
E
E
Vznuzdaev
X R
XR
Wang
D
D
Watanabe
K
K
Watanabe
Y
Y
Watanabe
F
F
Wei
R
R
Wei
J
J
Wessels
S N
SN
White
D
D
Winter
C L
CL
Woody
R M
RM
Wright
M
M
Wysocki
Y L
YL
Yamaguchi
K
K
Yamaura
R
R
Yang
A
A
Yanovich
J
J
Ying
S
S
Yokkaichi
Z
Z
You
G R
GR
Young
I
I
Younus
I E
IE
Yushmanov
W A
WA
Zajc
S
S
Zhou