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Volumn 65, Issue 11, 2002, Pages

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   more..


Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; COMPARATIVE STUDY; ENERGY; MASS; OSCILLATION; PHOTON; QUANTUM MECHANICS; SENSOR; THEORY;

EID: 0036612701     PISSN: 05562821     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevD.65.112003     Document Type: Article
Times cited : (74)

References (22)
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    • 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).
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  • 7
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    • 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.
  • 8
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    • note
    • 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
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    • note
    • A prescaled trigger is one in which every Nth event is recorded, where N is an integer, called the prescale factor.
  • 10
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    • 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].
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    • note
    • The other parton distribution functions used for comparison were CTEQ5HJ [14], MRST-99 [16], and MRST-99 g ↑ [16].
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.