Measurement of the charm production cross section in γγ collisions at LEP

M. Acciarri,P. Achard,O. Adriani,M. Aguilar-Benitez,J. Alcaraz,G. Alemanni,J. Allaby,A. Aloisio,M. G. Alviggi,G. Ambrosi,H. Anderhub,V.P. Andreev,T. Angelescu,F. Anselmo,A. Arefiev,T. Azemoon,T. Aziz,P. Bagnaia,A. Bajo,L. Baksay,A. Balandras,S.V. Baldew,S Banerjee,Sw. Banerjee,A. Barczyk,R. Barillère,P Bartalini,M. Basile,N. Batalova,R. Battiston,A. Bay,F. Becattini,U. Becker,F. Behner,L. Bellucci,R. Berbeco,J. Berdugo,P. Berges,B. Bertucci,B.L. Betev,S. Bhattacharya,M. Biasini,A. Biland,J.J. Blaising,S.C. Blyth,Gerjan Bobbink,A. Böhm,L. Boldizsar,B. Borgia,D. Bourilkov,M. Bourquin,S. Braccini,J. G. Branson,F. Brochu,A. Buffini,A. Buijs,J.D. Burger,W.J. Burger,X. D. Cai,M. Capell,G. Cara Romeo,G. Carlino,A.M. Cartacci,J. Casaus,G. Castellini,F. Cavallari,N. Cavallo,C. Cecchi,M. Cerrada,F. Cesaroni,M. Chamizo,Y. H. Chang,U.K. Chaturvedi,M. Chemarin,A. Chen,G. M. Chen,G. Chen,H.F. Chen,H. S. Chen,G. Chiefari,L. Cifarelli,F. Cindolo,Carlo Civinini,I. Clare,R. Clare,G. Coignet,N. Colino,S Costantini,F. Cotorobai,B. De La Cruz,A. Csilling,S. Cucciarelli,T. S. Dai,J.A. van Dalen,R. D’Alessandro,R. de Asmundis,P. Déglon,A. Degré,K. Deiters,D. della Volpe,E. Delmeire,P. Denes,F. DeNotaristefani,A. De Salvo,M. Diemoz,M. Dierckxsens,D. van Dierendonck,C. Dionisi,M. Dittmar,A. Dominguez,A. Doria,M. T. Dova,D. Duchesneau,D. Dufournaud,P. Duinker,H. El Mamouni,A. Engler,F.J. Eppling,F.C. Erné,A. Ewers,P. Extermann,M. Fabre,M.A. Falagan,S. Falciano,A. Favara,J. Fay,O. L. Fedin,Marta Felcini,T. Ferguson,H. Fesefeldt,E. Fiandrini,J.H. Field,F. Filthaut,P. H. Fisher,I. Fisk,G. Forconi,K. Freudenreich,C. Furetta,Yu. Galaktionov,S.N. Ganguli,P. Garcia Abia,M. Gataullin,S.S. Gau,S. Gentile,N. Gheordanescu,S. Giagu,Z.F. Gong,Gérald Grenier,O. Grimm,M.W. Gruenewald,M. Guida,R. van Gulik,V.K. Gupta,A. Gurtu,L. Gutay,D. Haas,A. Hasan,D Hatzifotiadou,T. Hebbeker,A. Hervé,P. Hidas,J. Hirschfelder,H. Hofer,G. Holzner,H Hoorani,S. Hou,Y. Hu,I. Iashvili,B.N. Jin,L. W. Jones,P. de Jong,I. Josa-Mutuberria,R.A. Khan,D. Käfer,M. Kaur,M.N. Kienzle-Focacci,D. Kim,Je Kim,J. Kirkby,D. Kiss,W. Kittel,A. Klimentov,A. C. König,M. Kopal,A. K. Kopp,V. Koutsenko,M. Kräber,R.W. Kraemer,W. Krenz,A. Krüger,A. Kunin,P. Ladron de Guevara,Imad Baptiste Laktineh,G. Landi,M. Lebeau,A. Lebedev,P. Lebrun,P. Lecomte,P. Lecoq,P. Le Coultre,H.J. Lee,J.M. Le Goff,R. Leiste,P. Levtchenko,C Li,S. Likhoded,C. H. Lin,W. Lin,F. Linde,L Lista,Z.A. Liu,W. Lohmann,E. Longo,Y.S. Lu,K. Lübelsmeyer,C. Luci,D. Luckey,L. Lugnier,L. Luminari,W. Lustermann,W.G. Ma,M. Maity,L. Malgeri,A Malinin,C. Maña,D. Mangeol,J. Mans,G. Marian,J.-P. Martin,F. Marzano,K. Mazumdar,R.R. McNeil,S. Mele,L. Merola,M. Meschini,W.J. Metzger,M. von der Mey,A Mihul,H. Milcent,G. Mirabelli,J. Mnich,G. B. Mohanty,T. Moulik,G.S. Muanza,A.J.M. Muijs,B. Musicar,M. Musy,M. Napolitano,F. Nessi-Tedaldi,H. B. Newman,T. Niessen,A. Nisati,H. Nowak,R. Ofierzynski,Giovanni Organtini,A. Oulianov,C. Palomares,D. Pandoulas,S. Paoletti,P. Paolucci,Riccardo Paramatti,H.K. Park,I.H Park,G. Passaleva,S. Patricelli,T. Paul,M. Pauluzzi,Christoph Paus,F. Pauss,M. Pedace,S. Pensotti,D. Perret-Gallix,B. Petersen,D. Piccolo,F. Pierella,M. Pieri,P. Piroué,E. Pistolesi,V. Plyaskin,M. Pohl,V. Pojidaev,H. Postema,J. Pothier,D.O. Prokofiev,D. Prokofiev,J. Quartieri,G. Rahal-Callot,M.A. Rahaman,P. Raics,N. Raja,R. Ramelli,P.G. Rancoita,R. Ranieri,A. Raspereza,G. Raven,P. A. Razis,D. Ren,M. Rescigno,S. Reucroft,S. Riemann,K. Riles,J. Rodin,B.P. Roe,L. Romero,A. Rosca,S. Rosier-Lees,S. Roth,C. Rosenbleck,B. Roux,J.A. Rubio,G. Ruggiero,H. Rykaczewski,S. Saremi,S. Sarkar,J. Salicio,E. Sanchez,M. P. Sanders,C. Schäfer,V. A. Schegelsky,S. Schmidt-Kaerst,D. Schmitz,H. Schopper,D.J. Schotanus,G. Schwering,C. Sciacca,A. Seganti,L. Servoli,S. Shevchenko,N. Shivarov,V. Shoutko,E. Shumilov,A. Shvorob,T. Siedenburg,D. C. Son,B. Smith,P. Spillantini,M. Steuer,David Stickland,A. Stone,B. Stoyanov,A. Straessner,K. Sudhakar,G. Sultanov,L.Z. Sun,S. Sushkov,H. Suter,J.D. Swain,Z. Szillasi,T. Sztaricskai,X.W. Tang,L. Tauscher,L. Taylor,B. Tellili,D. Teyssier,C. Timmermans,Samuel C.C. Ting,S. M. Ting,S.C. Tonwar,J. Tóth,C. Tully,K.L. Tung,Y. Uchida,J. Ulbricht,E. Valente,G. Vesztergombi,I. Vetlitsky,D. Vicinanza,G. Viertel,S. Villa,M. Vivargent,S. Vlachos,I. Vodopianov,H. Vogel,H. Vogt,I. Vorobiev,A. A. Vorobyov,A. Vorvolakos,M. Wadhwa,W. Wallraff,Meng Wang,X.L. Wang,Z.M. Wang,A. Weber,Martin Weber,P. Wienemann,H. Wilkens,S.X. Wu,S. Wynhoff,L. Xia,Z.Z. Xu,J. Yamamoto,B.Z. Yang,C.G. Yang,H. Yang,M. Yang,J.B. Ye,S.C. Yeh,An. Zalite,Yu. Zalite,Zhiqing Zhang,G.Y. Zhu,R. Y. Zhu,A. Zichichi,G. Zilizi,B. Zimmermann,M. Zöller

Measurement of the charm production cross section in γγ collisions at LEP

2001

M. Acciarri
P. Achard
O. Adriani
M. Aguilar-Benitez
J. Alcaraz
G. Alemanni
J. Allaby
A. Aloisio
M. G. Alviggi
G. Ambrosi
H. Anderhub
V.P. Andreev
T. Angelescu
F. Anselmo
A. Arefiev
T. Azemoon
T. Aziz
P. Bagnaia
A. Bajo
L. Baksay
A. Balandras
S.V. Baldew
S Banerjee
Sw. Banerjee
A. Barczyk
R. Barillère
P Bartalini
M. Basile
N. Batalova
R. Battiston
A. Bay
F. Becattini
U. Becker
F. Behner
L. Bellucci
R. Berbeco
J. Berdugo
P. Berges
B. Bertucci
B.L. Betev
S. Bhattacharya
M. Biasini
A. Biland
J.J. Blaising
S.C. Blyth
Gerjan Bobbink
A. Böhm
L. Boldizsar
B. Borgia
D. Bourilkov
M. Bourquin
S. Braccini
J. G. Branson
F. Brochu
A. Buffini
A. Buijs
J.D. Burger
W.J. Burger
X. D. Cai
M. Capell
G. Cara Romeo
G. Carlino
A.M. Cartacci
J. Casaus
G. Castellini
F. Cavallari
N. Cavallo
C. Cecchi
M. Cerrada
F. Cesaroni
M. Chamizo
Y. H. Chang
U.K. Chaturvedi
M. Chemarin
A. Chen
G. M. Chen
G. Chen
H.F. Chen
H. S. Chen
G. Chiefari
L. Cifarelli
F. Cindolo
Carlo Civinini
I. Clare
R. Clare
G. Coignet
N. Colino
S Costantini
F. Cotorobai
B. De La Cruz
A. Csilling
S. Cucciarelli
T. S. Dai
J.A. van Dalen
R. D’Alessandro
R. de Asmundis
P. Déglon
A. Degré
K. Deiters
D. della Volpe
E. Delmeire
P. Denes
F. DeNotaristefani
A. De Salvo
M. Diemoz
M. Dierckxsens
D. van Dierendonck
C. Dionisi
M. Dittmar
A. Dominguez
A. Doria
M. T. Dova
D. Duchesneau
D. Dufournaud
P. Duinker
H. El Mamouni
A. Engler
F.J. Eppling
F.C. Erné
A. Ewers
P. Extermann
M. Fabre
M.A. Falagan
S. Falciano
A. Favara
J. Fay
O. L. Fedin
Marta Felcini
T. Ferguson
H. Fesefeldt
E. Fiandrini
J.H. Field
F. Filthaut
P. H. Fisher
I. Fisk
G. Forconi
K. Freudenreich
C. Furetta
Yu. Galaktionov
S.N. Ganguli
P. Garcia Abia
M. Gataullin
S.S. Gau
S. Gentile
N. Gheordanescu
S. Giagu
Z.F. Gong
Gérald Grenier
O. Grimm
M.W. Gruenewald
M. Guida
R. van Gulik
V.K. Gupta
A. Gurtu
L. Gutay
D. Haas
A. Hasan
D Hatzifotiadou
T. Hebbeker
A. Hervé
P. Hidas
J. Hirschfelder
H. Hofer
G. Holzner
H Hoorani
S. Hou
Y. Hu
I. Iashvili
B.N. Jin
L. W. Jones
P. de Jong
I. Josa-Mutuberria
R.A. Khan
D. Käfer
M. Kaur
M.N. Kienzle-Focacci
D. Kim
Je Kim
J. Kirkby
D. Kiss
W. Kittel
A. Klimentov
A. C. König
M. Kopal
A. K. Kopp
V. Koutsenko
M. Kräber
R.W. Kraemer
W. Krenz
A. Krüger
A. Kunin
P. Ladron de Guevara
Imad Baptiste Laktineh
G. Landi
M. Lebeau
A. Lebedev
P. Lebrun
P. Lecomte
P. Lecoq
P. Le Coultre
H.J. Lee
J.M. Le Goff
R. Leiste
P. Levtchenko
C Li
S. Likhoded
C. H. Lin
W. Lin
F. Linde
L Lista
Z.A. Liu
W. Lohmann
E. Longo
Y.S. Lu
K. Lübelsmeyer
C. Luci
D. Luckey
L. Lugnier
L. Luminari
W. Lustermann
W.G. Ma
M. Maity
L. Malgeri
A Malinin
C. Maña
D. Mangeol
J. Mans
G. Marian
J.-P. Martin
F. Marzano
K. Mazumdar
R.R. McNeil
S. Mele
L. Merola
M. Meschini
W.J. Metzger
M. von der Mey
A Mihul
H. Milcent
G. Mirabelli
J. Mnich
G. B. Mohanty
T. Moulik
G.S. Muanza
A.J.M. Muijs
B. Musicar
M. Musy
M. Napolitano
F. Nessi-Tedaldi
H. B. Newman
T. Niessen
A. Nisati
H. Nowak
R. Ofierzynski
Giovanni Organtini
A. Oulianov
C. Palomares
D. Pandoulas
S. Paoletti
P. Paolucci
Riccardo Paramatti
H.K. Park
I.H Park
G. Passaleva
S. Patricelli
T. Paul
M. Pauluzzi
Christoph Paus
F. Pauss
M. Pedace
S. Pensotti
D. Perret-Gallix
B. Petersen
D. Piccolo
F. Pierella
M. Pieri
P. Piroué
E. Pistolesi
V. Plyaskin
M. Pohl
V. Pojidaev
H. Postema
J. Pothier
D.O. Prokofiev
D. Prokofiev
J. Quartieri
G. Rahal-Callot
M.A. Rahaman
P. Raics
N. Raja
R. Ramelli
P.G. Rancoita
R. Ranieri
A. Raspereza
G. Raven
P. A. Razis
D. Ren
M. Rescigno
S. Reucroft
S. Riemann
K. Riles
J. Rodin
B.P. Roe
L. Romero
A. Rosca
S. Rosier-Lees
S. Roth
C. Rosenbleck
B. Roux
J.A. Rubio
G. Ruggiero
H. Rykaczewski
S. Saremi
S. Sarkar
J. Salicio
E. Sanchez
M. P. Sanders
C. Schäfer
V. A. Schegelsky
S. Schmidt-Kaerst
D. Schmitz
H. Schopper
D.J. Schotanus
G. Schwering
C. Sciacca
A. Seganti
L. Servoli
S. Shevchenko
N. Shivarov
V. Shoutko
E. Shumilov
A. Shvorob
T. Siedenburg
D. C. Son
B. Smith
P. Spillantini
M. Steuer
David Stickland
A. Stone
B. Stoyanov
A. Straessner
K. Sudhakar
G. Sultanov
L.Z. Sun
S. Sushkov
H. Suter
J.D. Swain
Z. Szillasi
T. Sztaricskai
X.W. Tang
L. Tauscher
L. Taylor
B. Tellili
D. Teyssier
C. Timmermans
Samuel C.C. Ting
S. M. Ting
S.C. Tonwar
J. Tóth
C. Tully
K.L. Tung
Y. Uchida
J. Ulbricht
E. Valente
G. Vesztergombi
I. Vetlitsky
D. Vicinanza
G. Viertel
S. Villa
M. Vivargent
S. Vlachos
I. Vodopianov
H. Vogel
H. Vogt
I. Vorobiev
A. A. Vorobyov
A. Vorvolakos
M. Wadhwa
W. Wallraff
Meng Wang
X.L. Wang
Z.M. Wang
A. Weber
Martin Weber
P. Wienemann
H. Wilkens
S.X. Wu
S. Wynhoff
L. Xia
Z.Z. Xu
J. Yamamoto
B.Z. Yang
C.G. Yang
H. Yang
M. Yang
J.B. Ye
S.C. Yeh
An. Zalite
Yu. Zalite
Zhiqing Zhang
G.Y. Zhu
R. Y. Zhu
A. Zichichi
G. Zilizi
B. Zimmermann
M. Zöller

Abstract Open charm production in γγ collisions is studied with data collected at e + e − centre-of-mass energies from 189 GeV to 202 GeV corresponding to a total integrated luminosity of 410 pb −1 . The charm cross section σ(γγ→ c c X ) is measured for the first time as a function of the two-photon centre-of-mass energy in the interval from 5 GeV to 70 GeV and is compared to NLO QCD calculations.

Keywords:

Quantum chromodynamics
Nuclear physics
Physics
Particle physics
Luminosity
open charm
Photon

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