Abstract
We present a study of J/{psi} meson production in collisions of 26.7 GeV electrons with 820 GeV protons, performed with the H1-detector at the HERA collider at DESY. The J/{psi} mesons are detected via their leptonic decays both to electrons and muons. Requiring exactly two particles in the detector, a cross section of {sigma}(ep{yields}J/{psi}X)=(8.8{+-}2.0{+-}2.2) nb is determined for 30 GeV{<=}W{sub {gamma}p}{<=}180 GeV and Q{sup 2}< or {approx}4 GeV{sup 2}. Using the flux of quasi-real photons with Q{sup 2}< or {approx}4 GeV{sup 2}, a total photoproduction cross section of {sigma}({gamma}p{yields}J/{psi}X)=(56{+-}13{+-}14) nb is derived at an average W{sub {gamma}p}=90 GeV. The distribution of the squared momentum transfer t from the proton to the J/{psi} can be fitted using an exponential exp(-bvertical stroke tvertical stroke ) below avertical stroke tvertical stroke of 0.75 GeV{sup 2} yielding a slope parameter of b=(4.7{+-}1.9) GeV{sup -2}. (orig.)
Ahmed, T;
Aid, S;
Andreev, V;
Andrieu, B;
Appuhn, R D;
Arpagaus, M;
Babaev, A;
Baehr, J;
Ban, J;
Baranov, P;
Barrelet, E;
Bartel, W;
Barth, M;
Bassler, U;
Beck, H P;
Behrend, H J;
Belousov, A;
Berger, C;
Bergstein, H;
Bernardi, G;
Bernet, R;
Bertrand-Coremans, G;
Besancon, M;
Beyer, R;
Biddulph, P;
Bizot, J C;
Blobel, V;
Borras, K;
Botterweck, F;
Boudry, V;
Braemer, A;
Brasse, F;
Braunschweig, W;
Brisson, V;
Bruncko, D;
Brune, C;
Buchholz, R;
Buengener, L;
Buerger, J;
Buesser, F W;
Buniatian, A;
Burke, S;
Buschhorn, G;
Campbell, A J;
Carli, T;
Charles, F;
Clarke, D;
Clegg, A B;
Colombo, M;
Contreras, J G;
Coughlan, J A;
Courau, A;
Coutures, C;
Cozzika, G;
Criegee, L;
Cussans, D G;
Cvach, J;
Dagoret, S;
Dainton, J B;
Danilov, M;
Dau, W D;
Daum, K;
David, M;
Deffur, E;
Delcourt, B;
Del Buono, L;
De Roeck, A;
De Wolf, E A;
Di Nezza, P;
Dollfus, C;
Dowell, J D;
Dreis, H B;
Duboc, J;
Duellmann, D;
Duenger, O;
Duhm, H;
Ebert, J;
Ebert, T R;
Eckerlin, G;
Efremenko, V;
Egli, S;
Ehrlichmann, H;
Eichenberger, S;
Eichler, R;
Eisele, F;
Eisenhandler, E;
Ellison, R J;
Elsen, E;
Erdmann, M;
Erdmann, W;
Evrard, E;
Favart, L;
Fedotov, A;
Feeken, D;
Felst, R;
Feltesse, J;
Ferencei, J;
Ferrarotto, F;
Flamm, K;
Fleischer, M;
Flieser, M;
Fluegge, G;
Fomenko, A;
Fominykh, B;
Forbush, M;
Formanek, J;
Foster, J M;
Franke, G;
Fretwurst, E;
Gabathuler, E;
Gabathuler, K;
Gamerdinger, K;
Garvey, J;
Gayler, J;
Gebauer, M;
Gellrich, A;
Genzel, H;
Gerhards, R;
Goerlach, U;
Goerlich, L;
Gogitidze, N;
Goldberg, M;
Goldner, D;
Gonzalez-Pineiro, B;
Goodall, A M;
Gorelov, I;
Goritchev, P;
Grab, C;
Graessler, H;
Graessler, R;
Greenshaw, T;
Grindhammer, G;
Gruber, A;
Gruber, C;
Haack, J;
Haidt, D;
Hajduk, L;
Hamon, O;
Hampel, M;
Hanlon, E M;
Hapke, M;
Haynes, W J;
Heatherington, J;
Hedberg, V;
Heinzelmann, G;
Henderson, R C.W.;
Henschel, H;
H1 Collaboration
Citation Formats
Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Beyer, R, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J G, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, De Roeck, A, De Wolf, E A, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Erdmann, W, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, A, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, and H1 Collaboration.
Photoproduction of J/{psi}mesons at HERA.
Germany: N. p.,
1994.
Web.
Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Beyer, R, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J G, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, De Roeck, A, De Wolf, E A, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Erdmann, W, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, A, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, & H1 Collaboration.
Photoproduction of J/{psi}mesons at HERA.
Germany.
Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Beyer, R, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J G, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, De Roeck, A, De Wolf, E A, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Erdmann, W, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, A, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, and H1 Collaboration.
1994.
"Photoproduction of J/{psi}mesons at HERA."
Germany.
@misc{etde_10108162,
title = {Photoproduction of J/{psi}mesons at HERA}
author = {Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Beyer, R, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J G, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, De Roeck, A, De Wolf, E A, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Erdmann, W, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, A, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, and H1 Collaboration}
abstractNote = {We present a study of J/{psi} meson production in collisions of 26.7 GeV electrons with 820 GeV protons, performed with the H1-detector at the HERA collider at DESY. The J/{psi} mesons are detected via their leptonic decays both to electrons and muons. Requiring exactly two particles in the detector, a cross section of {sigma}(ep{yields}J/{psi}X)=(8.8{+-}2.0{+-}2.2) nb is determined for 30 GeV{<=}W{sub {gamma}p}{<=}180 GeV and Q{sup 2}< or {approx}4 GeV{sup 2}. Using the flux of quasi-real photons with Q{sup 2}< or {approx}4 GeV{sup 2}, a total photoproduction cross section of {sigma}({gamma}p{yields}J/{psi}X)=(56{+-}13{+-}14) nb is derived at an average W{sub {gamma}p}=90 GeV. The distribution of the squared momentum transfer t from the proton to the J/{psi} can be fitted using an exponential exp(-bvertical stroke tvertical stroke ) below avertical stroke tvertical stroke of 0.75 GeV{sup 2} yielding a slope parameter of b=(4.7{+-}1.9) GeV{sup -2}. (orig.)}
place = {Germany}
year = {1994}
month = {Aug}
}
title = {Photoproduction of J/{psi}mesons at HERA}
author = {Ahmed, T, Aid, S, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Babaev, A, Baehr, J, Ban, J, Baranov, P, Barrelet, E, Bartel, W, Barth, M, Bassler, U, Beck, H P, Behrend, H J, Belousov, A, Berger, C, Bergstein, H, Bernardi, G, Bernet, R, Bertrand-Coremans, G, Besancon, M, Beyer, R, Biddulph, P, Bizot, J C, Blobel, V, Borras, K, Botterweck, F, Boudry, V, Braemer, A, Brasse, F, Braunschweig, W, Brisson, V, Bruncko, D, Brune, C, Buchholz, R, Buengener, L, Buerger, J, Buesser, F W, Buniatian, A, Burke, S, Buschhorn, G, Campbell, A J, Carli, T, Charles, F, Clarke, D, Clegg, A B, Colombo, M, Contreras, J G, Coughlan, J A, Courau, A, Coutures, C, Cozzika, G, Criegee, L, Cussans, D G, Cvach, J, Dagoret, S, Dainton, J B, Danilov, M, Dau, W D, Daum, K, David, M, Deffur, E, Delcourt, B, Del Buono, L, De Roeck, A, De Wolf, E A, Di Nezza, P, Dollfus, C, Dowell, J D, Dreis, H B, Duboc, J, Duellmann, D, Duenger, O, Duhm, H, Ebert, J, Ebert, T R, Eckerlin, G, Efremenko, V, Egli, S, Ehrlichmann, H, Eichenberger, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellison, R J, Elsen, E, Erdmann, M, Erdmann, W, Evrard, E, Favart, L, Fedotov, A, Feeken, D, Felst, R, Feltesse, J, Ferencei, J, Ferrarotto, F, Flamm, K, Fleischer, M, Flieser, M, Fluegge, G, Fomenko, A, Fominykh, B, Forbush, M, Formanek, J, Foster, J M, Franke, G, Fretwurst, E, Gabathuler, E, Gabathuler, K, Gamerdinger, K, Garvey, J, Gayler, J, Gebauer, M, Gellrich, A, Genzel, H, Gerhards, R, Goerlach, U, Goerlich, L, Gogitidze, N, Goldberg, M, Goldner, D, Gonzalez-Pineiro, B, Goodall, A M, Gorelov, I, Goritchev, P, Grab, C, Graessler, H, Graessler, R, Greenshaw, T, Grindhammer, G, Gruber, A, Gruber, C, Haack, J, Haidt, D, Hajduk, L, Hamon, O, Hampel, M, Hanlon, E M, Hapke, M, Haynes, W J, Heatherington, J, Hedberg, V, Heinzelmann, G, Henderson, R C.W., Henschel, H, and H1 Collaboration}
abstractNote = {We present a study of J/{psi} meson production in collisions of 26.7 GeV electrons with 820 GeV protons, performed with the H1-detector at the HERA collider at DESY. The J/{psi} mesons are detected via their leptonic decays both to electrons and muons. Requiring exactly two particles in the detector, a cross section of {sigma}(ep{yields}J/{psi}X)=(8.8{+-}2.0{+-}2.2) nb is determined for 30 GeV{<=}W{sub {gamma}p}{<=}180 GeV and Q{sup 2}< or {approx}4 GeV{sup 2}. Using the flux of quasi-real photons with Q{sup 2}< or {approx}4 GeV{sup 2}, a total photoproduction cross section of {sigma}({gamma}p{yields}J/{psi}X)=(56{+-}13{+-}14) nb is derived at an average W{sub {gamma}p}=90 GeV. The distribution of the squared momentum transfer t from the proton to the J/{psi} can be fitted using an exponential exp(-bvertical stroke tvertical stroke ) below avertical stroke tvertical stroke of 0.75 GeV{sup 2} yielding a slope parameter of b=(4.7{+-}1.9) GeV{sup -2}. (orig.)}
place = {Germany}
year = {1994}
month = {Aug}
}