Comparison of the isolated direct photon cross sections in pp̄ collisions at √s = 1.8 TeV and √s = 0.63 TeV
(99)
Acosta, D
k
Affolder, T
r
Akimoto, H
aj
Albrow, M G
j
Ambrose, D
z
Amidei, D
t
Anikeev, K
s
Antos, J
a
Apollinari, G
j
Arisawa, T
aj
Artikov, A
h
Asakawa, T
ai
Ashmanskas, W
g
Azfar, F
x
Azzi Bacchetta, P
y
Bacchetta, N
y
Bachacou, H
r
Badgett, W
j
Bailey, S
o
De Barbaro, P
ad
Barbaro Galtieri, A
r
Barnes, V E
ac
Barnett, B A
q
Baroiant, S
e
Barone, M
l
Bauer, G
s
Bedeschi, F
aa
Belforte, S
ah
Bell, W H
n
Bellettini, G
aa
Bellinger, J
ak
Benjamin, D
i
Bensinger, J
d
Beretvas, A
j
Berge, J P
j
Berryhill, J
g
Bhatti, A
ae
Binkley, M
j
Bisello, D
y
Bishai, M
j
Blair, R E
b
Blocker, C
d
Bloom, K
t
Blumenfeld, B
q
Blusk, S R
ad
Bocci, A
ae
Bodek, A
ad
Bolla, G
ac
Bonushkin, Y
f
Bortoletto, D
ac
Boudreau, J
ab
Brandl, A
v
Van Den Brink, S
q
Bromberg, C
u
Brozovic, M
i
Brubaker, E
r
Bruner, N
v
Budagov, J
h
Budd, H S
ad
Burkett, K
o
Busetto, G
y
Byon Wagner, A
j
Byrum, K L
b
Cabrera, S
i
Calafiura, P
r
Campbell, M
t
Carithers, W
r
Carlson, J
t
Carlsmith, D
ak
Caskey, W
e
Castro, A
c
Cauz, D
ah
Cerri, A
aa
Chan, A W
a
Chang, P S
a
Chang, P T
a
Chapman, J
t
Chen, C
z
Chen, Y C
a
Cheng, M T
a
Chertok, M
e
Chiarelli, G
aa
Chirikov Zorin, I
h
Chlachidze, G
h
Chlebana, F
j
Christofek, L
p
Chu, M L
a
Chung, J Y
w
Chung, W H
ak
Chung, Y S
ad
Ciobanu, C I
w
Clark, A G
m
Coca, M
ad
Colijn, A P
j
Connolly, A
r
Convery, M
ae
Conway, J
af
Cordelli, M
l
Cranshaw, J
ag
more..
|
-
2
-
-
25944454399
-
-
CDF Collaboration
-
CDF Collaboration, F. Abe et al., Phys. Rev. D 48, 2998 (1993).
-
(1993)
Phys. Rev. D
, vol.48
, pp. 2998
-
-
Abe, F.1
-
3
-
-
26544448274
-
-
CDF Collaboration
-
CDF Collaboration, F. Abe et al., Phys. Rev. Lett. 68, 2734 (1992).
-
(1992)
Phys. Rev. Lett.
, vol.68
, pp. 2734
-
-
Abe, F.1
-
5
-
-
0024082393
-
-
CDF Collaboration, and the references therein.
-
CDF Collaboration, F. Abe et al., Nucl. Instrum. Methods Phys. Res. A 271, 387 (1988), and the references therein. The angular coordinate system used within CDF is (θ, φ), where θ is the polar angle relative to the proton beam as measured from the event vertex, and φ the azimuth. The pseudorapidity is defined as η= - ln tan(θ/2).
-
(1988)
Nucl. Instrum. Methods Phys. Res. A
, vol.271
, pp. 387
-
-
Abe, F.1
-
7
-
-
33847045244
-
-
note
-
The trigger towers consist of two calorimeter towers in the central region, covering 0.1×15° in η-φ space. A typical CEM photon trigger cluster consists of one trigger tower, although neighboring trigger towers with more than 1 GeV can be added, as well as their neighbors.
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-
-
-
8
-
-
33847066394
-
-
note
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This is a change from the level 2 configuration used in Ref. [3], in which a 5×5 array was used to isolate the photon.
-
-
-
-
9
-
-
33847045645
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note
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A prescaled trigger is one in which every Nth event is recorded, where N is an integer, called the prescale factor.
-
-
-
-
10
-
-
33847069252
-
-
note
-
The isolation cut used in this analysis measures energy in a cone of radius 0.4 around the photon candidate; a cone radius of 0.7 was used in Ref. [3].
-
-
-
-
12
-
-
33847025730
-
-
GEANT3 Collaboration, R. Brun et al., CERN DD/EE/84-1
-
GEANT3 Collaboration, R. Brun et al., CERN DD/EE/84-1.
-
-
-
-
14
-
-
0008662280
-
-
CTEQ Collaboration
-
CTEQ Collaboration, H.L. Lai et al., Eur. Phys. J. C 12, 375 (2000).
-
(2000)
Eur. Phys. J. C
, vol.12
, pp. 375
-
-
Lai, H.L.1
-
15
-
-
33847022360
-
-
note
-
The other parton distribution functions used for comparison were CTEQ5HJ [14], MRST-99 [16], and MRST-99 g ↑ [16].
-
-
-
-
16
-
-
0033236195
-
-
A.D. Martin, R.G. Roberts, W.J. Stirling, and R.S. Thorne, Nucl. Phys. B (Proc. Suppl.) 79, 210 (1999).
-
(1999)
Nucl. Phys. B (Proc. Suppl.)
, vol.79
, pp. 210
-
-
Martin, A.D.1
Roberts, R.G.2
Stirling, W.J.3
Thorne, R.S.4
-
17
-
-
4243650389
-
-
DO Collaboration
-
DO Collaboration, B. Abbott et al., Phys. Rev. Lett. 84, 2786 (2000).
-
(2000)
Phys. Rev. Lett.
, vol.84
, pp. 2786
-
-
Abbott, B.1
-
18
-
-
1542739849
-
-
UA2 Collaboration
-
UA2 Collaboration, J. Alitti et al., Phys. Lett. B 263, 544 (1991).
-
(1991)
Phys. Lett. B
, vol.263
, pp. 544
-
-
Alitti, J.1
-
19
-
-
45849155406
-
-
D0 Collaboration
-
D0 Collaboration, V.M. Abazov et al., Phys. Rev. Lett. 87, 251805 (2001).
-
(2001)
Phys. Rev. Lett.
, vol.87
, pp. 251805
-
-
Abazov, V.M.1
-
21
-
-
33847053301
-
-
Ph.D. thesis, Florida State University, hep-ph/0105276
-
C. Fink, Ph.D. thesis, Florida State University, 2001, hep-ph/0105276.
-
(2001)
-
-
Fink, C.1
-
22
-
-
33847030015
-
-
Ph.D. thesis, Brandeis University
-
D. Partos, Ph.D. thesis, Brandeis University, 2001.
-
(2001)
-
-
Partos, D.1
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