Measurement of the Charm Production Cross Section in gamma gamma 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. Andreev,T. Angelescu,F. Anselmo,A. Arefev,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. Boehm,L. Boldizsar,B. Borgia,D. Bourilkov,M. Bourquin,S. Braccini,J. G. Branson,F. M. 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-Llatas,Y. H. Chang,U.K. Chaturvedi,M. Chemarin,A. Chen,G. Chen,G.M. Chen,H. F. Chen,H.S. Chen,G. Chiefari,L. Cifarelli,F. Cindolo,C. 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. Degre,K. Deiters,D. della Volpe,E. Delmeire,P. Denes,F. de Notaristefani,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,M. 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,G. 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. R. Hoorani,S.R. 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,J.K. Kim,J. Kirkby,D. Kiss,W. Kittel,A. Klimentov,Adriaan Koenig,M. Kopal,A. K. Kopp,V. Koutsenko,M. Kräber,R.W. Kraemer,W. Krenz,A. Krueger,A. Kunin,P. Ladron de Guevara,I. B. 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. Levchenko,C. Li,S. Likhoded,Ch Lin,W.T. Lin,F. Linde,L Lista,Z.A. Liu,W. Lohmann,E. Longo,Y.S. Lu,K. Luebelsmeyer,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,C. Paus,F. Pauss,M. Pedace,S. Pensotti,D. Perret-Gallix,B. A. Petersen,D. Piccolo,F. Pierella,M. Pieri,P. Piroué,E. Pistolesi,V. Plyaskin,M. Pohl,V. Pozhidaev,H. Postema,J. Pothier,D.O. Prokofev,D. Prokofev,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,Luciano 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. Schaefer,V. Shchegelskii,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. C. Smith,P. Spillantini,M. Steuer,D. 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. Toth,C. Tully,K.L. Tung,Y. Uchida,J. Ulbricht,E. Valente,G. Vesztergombi,I. Vetlitskii,D. Vicinanza,G. Viertel,S. Villa,M. Vivargent,S. Vlachos,I. Vodopyanov,H. Vogel,H. Vogt,I. Vorobev,A. A. Vorobyov,A. Vorvolakos,M. Wadhwa,W. Wallraff,Meng Wang,X.L. Wang,Z.M. Wang,A. Weber,M. Weber,P. Wienemann,H. G. 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,Z.P. Zhang,G.Y. Zhu,R. Y. Zhu,A. Zichichi,G. Zilizi,B. Zimmermann,M. M. Zoeller

Measurement of the Charm Production Cross Section in gamma gamma 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. Andreev
T. Angelescu
F. Anselmo
A. Arefev
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. Boehm
L. Boldizsar
B. Borgia
D. Bourilkov
M. Bourquin
S. Braccini
J. G. Branson
F. M. 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-Llatas
Y. H. Chang
U.K. Chaturvedi
M. Chemarin
A. Chen
G. Chen
G.M. Chen
H. F. Chen
H.S. Chen
G. Chiefari
L. Cifarelli
F. Cindolo
C. 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. Degre
K. Deiters
D. della Volpe
E. Delmeire
P. Denes
F. de Notaristefani
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
M. 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
G. 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. R. Hoorani
S.R. 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
J.K. Kim
J. Kirkby
D. Kiss
W. Kittel
A. Klimentov
Adriaan Koenig
M. Kopal
A. K. Kopp
V. Koutsenko
M. Kräber
R.W. Kraemer
W. Krenz
A. Krueger
A. Kunin
P. Ladron de Guevara
I. B. 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. Levchenko
C. Li
S. Likhoded
Ch Lin
W.T. Lin
F. Linde
L Lista
Z.A. Liu
W. Lohmann
E. Longo
Y.S. Lu
K. Luebelsmeyer
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
C. Paus
F. Pauss
M. Pedace
S. Pensotti
D. Perret-Gallix
B. A. Petersen
D. Piccolo
F. Pierella
M. Pieri
P. Piroué
E. Pistolesi
V. Plyaskin
M. Pohl
V. Pozhidaev
H. Postema
J. Pothier
D.O. Prokofev
D. Prokofev
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
Luciano 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. Schaefer
V. Shchegelskii
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. C. Smith
P. Spillantini
M. Steuer
D. 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. Toth
C. Tully
K.L. Tung
Y. Uchida
J. Ulbricht
E. Valente
G. Vesztergombi
I. Vetlitskii
D. Vicinanza
G. Viertel
S. Villa
M. Vivargent
S. Vlachos
I. Vodopyanov
H. Vogel
H. Vogt
I. Vorobev
A. A. Vorobyov
A. Vorvolakos
M. Wadhwa
W. Wallraff
Meng Wang
X.L. Wang
Z.M. Wang
A. Weber
M. Weber
P. Wienemann
H. G. 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
Z.P. Zhang
G.Y. Zhu
R. Y. Zhu
A. Zichichi
G. Zilizi
B. Zimmermann
M. M. Zoeller

Open charm production in gamma-gamma 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 sigma(gamma gamma ---> 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
Particle physics
Nuclear physics
Sigma
Physics
Luminosity
gamma gamma
open charm

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