J/ψ production at CERN LEP:: Revisited and resummed -: art. no. 054016

被引：22

作者：

Boyd, CG ^{[1
]}

Leibovich, AK ^{[1
]}

Rothstein, IZ ^{[1
]}

机构：

[1] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

来源：

PHYSICAL REVIEW D | 1999年 / 59卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.59.054016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the leading order differential and total rates for J/psi production at CERN LEP. By leading order we mean all terms of the form alpha(s)[alpha(s) log(M-Z(2)/M-psi(2))](n) and alpha(s)(n+1) log(1)(z(2))log(m)(M-Z(2)/M-psi(2)), (l+m=2n-1), in the regions z = 2E(psi)/M-Z similar to O(1) and z much less than 1, respectively. In the intermediate region we interpolate using the available data. This resummation eliminates the O[alpha(s)(M-psi)/alpha(s)(M-Z)]similar to 2 theoretical uncertainties in previous calculations. The log(z) resummation results in a suppression of the small z region due to coherent gluon emission. Comparing the zeroth moment with the LEP data we find the value for the effective octet matrix element to be [(O) over cap(8)(psi)(S-3(1))] = 0.019 GeV3. The theoretical uncertainties are substantially smaller than those from Fermilab Tevatron extractions. Using this value of the octet matrix element we make a prediction for the first moment of the differential rate and find that the resummed differential decay rate is in much better agreement with preliminary data than the color singlet result or the unresummed color octet prediction. [S0556-2821(99)04605-6].

引用

页数：7

共 50 条

[31] W±H± associated production at the CERN Large Hadron Collider -: art. no. 015009 [J].

Bendezú, AAB ;

Kniehl, BA .

PHYSICAL REVIEW D, 1999, 59 (01)

[32] Simulating W/Z plus jets production at the CERN LHC -: art. no. 054017 [J].

Krauss, F ;

Schälicke, A ;

Schumann, S ;

Soff, G .

PHYSICAL REVIEW D, 2005, 72 (05)

[33] Dijet production as a centrality trigger for pp collisions at CERN LHC -: art. no. 114010 [J].

Frankfurt, L ;

Strikman, M ;

Weiss, C .

PHYSICAL REVIEW D, 2004, 69 (11)

[34] Phenomenology of W± H∓ production at the CERN Large Hadron Collider -: art. no. 055008 [J].

Moretti, S ;

Odagiri, K .

PHYSICAL REVIEW D, 1999, 59 (05)

[35] Bounding the tau neutrino magnetic moment at CERN LEP in a left-right symmetric model -: art. no. 117302 [J].

Gutiérrez, A ;

Hernández, MA ;

Maya, M ;

Rosado, A .

PHYSICAL REVIEW D, 1998, 58 (11)

[36] Predictions for D*± photoproduction at DESY HERA with new fragmentation functions from CERN LEP 1 -: art. no. 014014 [J].

Binnewies, J ;

Kniehl, BA ;

Kramer, G .

PHYSICAL REVIEW D, 1998, 58 (01)

[37] Study of extra space dimensions in vector boson pair production at LEP -: art. no. 117901 [J].

Mele, S ;

Sánchez, E .

PHYSICAL REVIEW D, 2000, 61 (11)

[38] WLAN steganography revisited - art. no. 681903 [J].

Kraetzer, Christian ;

Dittmann, Jana ;

Merkel, Ronny .

SECURITY, FORENSICS, STEGANOGRAPHY, AND WATERMARKING OF MULTIMEDIA CONTENTS X, 2008, 6819 :81903-81903

[39] A search for vector diquarks at the CERN LHC -: art. no. 024 [J].

Arik, E ;

Çetin, SA ;

Çakir, O ;

Sultansoy, S .

JOURNAL OF HIGH ENERGY PHYSICS, 2002, (09)

[40] W production at large transverse momentum at the CERN large hadron collider -: art. no. 222001 [J].

Gonsalves, RJ ;

Kidonakis, N ;

Vera, AS .

PHYSICAL REVIEW LETTERS, 2005, 95 (22)

← 1 2 3 4 5 →