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Affolder T, Akimoto H, Akopian A, et al. Observation of diffractive J/psi production at the Fermilab Tevatron. Phys Rev Lett. 2001;87(24):241802doi: 10.1103/PhysRevLett.87.241802.
Affolder, T., Akimoto, H., Akopian, A., Albrow, M. G., Amaral, P., Amidei, D., Anikeev, K., Antos, J., Apollinari, G., Arisawa, T., Artikov, A., Asakawa, T., Ashmanskas, W., Azfar, F., Azzi-Bacchetta, P., Bacchetta, N., Bachacou, H., Bailey, S., de Barbaro, P., Barbaro-Galtieri, A., Barnes, V. E., Barnett, B. A., Baroiant, S., Barone, M., Bauer, G., Bedeschi, F., Belforte, S., Bell, W. H., Bellettini, G., Bellinger, J., Benjamin, D., Bensinger, J., Beretvas, A., Berge, J. P., Berryhill, J., Bhatti, A., Binkley, M., Bisello, D., Bishai, M., Blair, R. E., Blocker, C., Bloom, K., Blumenfeld, B., Blusk, S. R., Bocci, A., Bodek, A., Bokhari, W., Bolla, G., Bonushkin, Y., Borras, K., Bortoletto, D., Boudreau, J., Brandl, A., van den Brink, S., Bromberg, C., Brozovic, M., Brubaker, E., Bruner, N., Buckley-Geer, E., Budagov, J., Budd, H. S., Burkett, K., Busetto, G., Byon-Wagner, A., Byrum, K. L., Cabrera, S., Calafiura, P., Campbell, M., Carithers, W., Carlson, J., Carlsmith, D., Caskey, W., Castro, A., Cauz, D., Cerri, A., Chan, A. W., Chang, P. S., Chang, P. T., Chapman, J., Chen, C., Chen, Y. C., Cheng, M. T., Chertok, M., Chiarelli, G., Chirikov-Zorin, I., Chlachidze, G., Chlebana, F., Christofek, L., Chu, M. L., Chung, Y. S., Ciobanu, C. I., Clark, A. G., Connolly, A., Convery, M. E., Conway, J., Cordelli, M., Cranshaw, J., Cropp, R., Culbertson, R., Dagenhart, D., D'Auria, S., DeJongh, F., Dell'Agnello, S., Dell'Orso, M., Demortier, L., Deninno, M., Derwent, P. F., Devlin, T., Dittmann, J. R., Dominguez, A., Donati, S., Done, J., D'Onofrio, M., Dorigo, T., Eddy, N., Einsweiler, K., Elias, J. E., Engels, E., Erbacher, R., Errede, D., Errede, S., Fan, Q., Feild, R. G., Fernandez, J. P., Ferretti, C., Field, R. D., Fiori, I., Flaugher, B., Foster, G. W., Franklin, M., Freeman, J., Friedman, J., Fukui, Y., Furic, I., Galeotti, S., Gallas, A., Gallinaro, M., Gao, T., Garcia-Sciveres, M., Garfinkel, A. F., Gatti, P., Gay, C., Gerdes, D. W., Giannetti, P., Glagolev, V., Glenzinski, D., Gold, M., Goldstein, J., Gorelov, I., Goshaw, A. T., Gotra, Y., Goulianos, K., Green, C., Grim, G., Gris, P., Groer, L., Grosso-Pilcher, C., Guenther, M., Guillian, G., Guimaraes da Costa, J., Haas, R. M., Haber, C., Hahn, S. R., Hall, C., Handa, T., Handler, R., Hao, W., Happacher, F., Hara, K., Hardman, A. D., Harris, R. M., Hartmann, F., Hatakeyama, K., Hauser, J., Heinrich, J., Heiss, A., Herndon, M., Hill, C., Hoffman, K. D., Holck, C., Hollebeek, R., Holloway, L., Hughes, R., Huston, J., Huth, J., Ikeda, H., Incandela, J., Introzzi, G., Iwai, J., Iwata, Y., James, E., Jones, M., Joshi, U., Kambara, H., Kamon, T., Kaneko, T., Karr, K., Kasha, H., Kato, Y., Keaffaber, T. A., Kelley, K., Kelly, M., Kennedy, R. D., Kephart, R., Khazins, D., Kikuchi, T., Kilminster, B., Kim, B. J., Kim, D. H., Kim, H. S., Kim, M. J., Kim, S. B., Kim, S. H., Kim, Y. K., Kirby, M., Kirk, M., Kirsch, L., Klimenko, S., Koehn, P., Kondo, K., Konigsberg, J., Korn, A., Korytov, A., Kovacs, E., Kroll, J., Kruse, M., Kuhlmann, S. E., Kurino, K., Kuwabara, T., Laasanen, A. T., Lai, N., Lami, S., Lammel, S., Lancaster, J., Lancaster, M., Lander, R., Lath, A., Latino, G., LeCompte, T., Lee, A. M., Lee, K., Leone, S., Lewis, J. D., Lindgren, M., Liss, T. M., Liu, J. B., Liu, Y. C., Litvintsev, D. O., Lobban, O., Lockyer, N., Loken, J., Loreti, M., Lucchesi, D., Lukens, P., Lusin, S., Lyons, L., Lys, J., Madrak, R., Maeshima, K., Maksimovic, P., Malferrari, L., Mangano, M., Mariotti, M., Martignon, G., Martin, A., Matthews, J. A., Mayer, J., Mazzanti, P., McFarland, K. S., McIntyre, P., McKigney, E., Menguzzato, M., Menzione, A., Mesropian, C., Meyer, A., Miao, T., Miller, R., Miller, J. S., Minato, H., Miscetti, S., Mishina, M., Mitselmakher, G., Moggi, N., Moore, E., Moore, R., Morita, Y., Moulik, T., Mulhearn, M., Mukherjee, A., Muller, T., Munar, A., Murat, P., Murgia, S., Nachtman, J., Nagaslaev, V., Nahn, S., Nakada, H., Nakano, I., Nelson, C., Nelson, T., Neu, C., Neuberger, D., Newman-Holmes, C., Ngan, C. Y., Niu, H., Nodulman, L., Nomerotski, A., Oh, S. H., Oh, Y. D., Ohmoto, T., Ohsugi, T., Oishi, R., Okusawa, T., Olsen, J., Orejudos, W., Pagliarone, C., Palmonari, F., Paoletti, R., Papadimitriou, V., Partos, D., Patrick, J., Pauletta, G., Paulini, M., Paus, C., Pellett, D., Pescara, L., Phillips, T. J., Piacentino, G., Pitts, K. T., Pompos, A., Pondrom, L., Pope, G., Popovic, M., Prokoshin, F., Proudfoot, J., Ptohos, F., Pukhov, O., Punzi, G., Rakitine, A., Ratnikov, F., Reher, D., Reichold, A., Ribon, A., Riegler, W., Rimondi, F., Ristori, L., Riveline, M., Robertson, W. J., Robinson, A., Rodrigo, T., Rolli, S., Rosenson, L., Roser, R., Rossin, R., Roy, A., Ruiz, A., Safonov, A., Denis, R. S., Sakumoto, W. K., Saltzberg, D., Sanchez, C., Sansoni, A., Santi, L., Sato, H., Savard, P., Schlabach, P., Schmidt, E. E., Schmidt, M. P., Schmitt, M., Scodellaro, L., Scott, A., Scribano, A., Segler, S., Seidel, S., Seiya, Y., Semenov, A., Semeria, F., Shah, T., Shapiro, M. D., Shepard, P. F., Shibayama, T., Shimojima, M., Shochet, M., Sidoti, A., Siegrist, J., Sill, A., Sinervo, P., Singh, P., Slaughter, A. J., Sliwa, K., Smith, C., Snider, F. D., Solodsky, A., Spalding, J., Speer, T., Sphicas, P., Spinella, F., Spiropulu, M., Spiegel, L., Steele, J., Stefanini, A., Strologas, J., Strumia, F., Stuart, D., Sumorok, K., Suzuki, T., Takano, T., Takashima, R., Takikawa, K., Tamburello, P., Tanaka, M., Tannenbaum, B., Tecchio, M., Tesarek, R., Teng, P. K., Terashi, K., Tether, S., Thompson, A. S., Thurman-Keup, R., Tipton, P., Tkaczyk, S., Toback, D., Tollefson, K., Tollestrup, A., Tonelli, D., Toyoda, H., Trischuk, W., de Troconiz, J. F., Tseng, J., Turini, N., Ukegawa, F., Vaiciulis, T., Valls, J., Vejcik, S., Velev, G., Veramendi, G., Vidal, R., Vila, I., Vilar, R., Volobouev, I., von der Mey, M., Vucinic, D., Wagner, R. G., Wagner, R. L., Wallace, N. B., Wan, Z., Wang, C., Wang, M. J., Ward, B., Waschke, S., Watanabe, T., Waters, D., Watts, T., Webb, R., Wenzel, H., Wester, W. C., Wicklund, A. B., Wicklund, E., Wilkes, T., Williams, H. H., Wilson, P., Winer, B. L., Winn, D., Wolbers, S., Wolinski, D., Wolinski, J., Wolinski, S., Worm, S., Wu, X., Wyss, J., Yao, W., Yeh, G. P., Yeh, P., Yoh, J., Yosef, C., Yoshida, T., Yu, I., Yu, S., Yu, Z., Zanetti, A., Zetti, F., Zucchelli, S. (2001). Observation of diffractive J/psi production at the Fermilab Tevatron. Physical review letters, 87(24), 241802. https://doi.org/10.1103/PhysRevLett.87.241802
Affolder, T, et al. "Observation of diffractive J/psi production at the Fermilab Tevatron." Physical review letters vol. 87,24 (2001): 241802. doi: https://doi.org/10.1103/PhysRevLett.87.241802
Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Borras K, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Convery ME, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, Denis RS, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Observation of diffractive J/psi production at the Fermilab Tevatron. Phys Rev Lett. 2001 Dec 10;87(24):241802. doi: 10.1103/PhysRevLett.87.241802. Epub 2001 Nov 21. PMID: 11736493.
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Phys Rev Lett. 2001 Dec 10;87(24):241802. doi: 10.1103/PhysRevLett.87.241802. Epub 2001 Nov 21.

Observation of diffractive J/psi production at the Fermilab Tevatron.

Physical review letters

T Affolder, H Akimoto, A Akopian, M G Albrow, P Amaral, D Amidei, K Anikeev, J Antos, G Apollinari, T Arisawa, A Artikov, T Asakawa, W Ashmanskas, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, S Bailey, P de Barbaro, A Barbaro-Galtieri, V E Barnes, B A Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Belforte, W H Bell, G Bellettini, J Bellinger, D Benjamin, J Bensinger, A Beretvas, J P Berge, J Berryhill, A Bhatti, M Binkley, D Bisello, M Bishai, R E Blair, C Blocker, K Bloom, B Blumenfeld, S R Blusk, A Bocci, A Bodek, W Bokhari, G Bolla, Y Bonushkin, K Borras, D Bortoletto, J Boudreau, A Brandl, S van den Brink, C Bromberg, M Brozovic, E Brubaker, N Bruner, E Buckley-Geer, J Budagov, H S Budd, K Burkett, G Busetto, A Byon-Wagner, K L Byrum, S Cabrera, P Calafiura, M Campbell, W Carithers, J Carlson, D Carlsmith, W Caskey, A Castro, D Cauz, A Cerri, A W Chan, P S Chang, P T Chang, J Chapman, C Chen, Y C Chen, M T Cheng, M Chertok, G Chiarelli, I Chirikov-Zorin, G Chlachidze, F Chlebana, L Christofek, M L Chu, Y S Chung, C I Ciobanu, A G Clark, A Connolly, M E Convery, J Conway, M Cordelli, J Cranshaw, R Cropp, R Culbertson, D Dagenhart, S D'Auria, F DeJongh, S Dell'Agnello, M Dell'Orso, L Demortier, M Deninno, P F Derwent, T Devlin, J R Dittmann, A Dominguez, S Donati, J Done, M D'Onofrio, T Dorigo, N Eddy, K Einsweiler, J E Elias, E Engels, R Erbacher, D Errede, S Errede, Q Fan, R G Feild, J P Fernandez, C Ferretti, R D Field, I Fiori, B Flaugher, G W Foster, M Franklin, J Freeman, J Friedman, Y Fukui, I Furic, S Galeotti, A Gallas, M Gallinaro, T Gao, M Garcia-Sciveres, A F Garfinkel, P Gatti, C Gay, D W Gerdes, P Giannetti, V Glagolev, D Glenzinski, M Gold, J Goldstein, I Gorelov, A T Goshaw, Y Gotra, K Goulianos, C Green, G Grim, P Gris, L Groer, C Grosso-Pilcher, M Guenther, G Guillian, J Guimaraes da Costa, R M Haas, C Haber, S R Hahn, C Hall, T Handa, R Handler, W Hao, F Happacher, K Hara, A D Hardman, R M Harris, F Hartmann, K Hatakeyama, J Hauser, J Heinrich, A Heiss, M Herndon, C Hill, K D Hoffman, C Holck, R Hollebeek, L Holloway, R Hughes, J Huston, J Huth, H Ikeda, J Incandela, G Introzzi, J Iwai, Y Iwata, E James, M Jones, U Joshi, H Kambara, T Kamon, T Kaneko, K Karr, H Kasha, Y Kato, T A Keaffaber, K Kelley, M Kelly, R D Kennedy, R Kephart, D Khazins, T Kikuchi, B Kilminster, B J Kim, D H Kim, H S Kim, M J Kim, S B Kim, S H Kim, Y K Kim, M Kirby, M Kirk, L Kirsch, S Klimenko, P Koehn, K Kondo, J Konigsberg, A Korn, A Korytov, E Kovacs, J Kroll, M Kruse, S E Kuhlmann, K Kurino, T Kuwabara, A T Laasanen, N Lai, S Lami, S Lammel, J Lancaster, M Lancaster, R Lander, A Lath, G Latino, T LeCompte, A M Lee, K Lee, S Leone, J D Lewis, M Lindgren, T M Liss, J B Liu, Y C Liu, D O Litvintsev, O Lobban, N Lockyer, J Loken, M Loreti, D Lucchesi, P Lukens, S Lusin, L Lyons, J Lys, R Madrak, K Maeshima, P Maksimovic, L Malferrari, M Mangano, M Mariotti, G Martignon, A Martin, J A Matthews, J Mayer, P Mazzanti, K S McFarland, P McIntyre, E McKigney, M Menguzzato, A Menzione, C Mesropian, A Meyer, T Miao, R Miller, J S Miller, H Minato, S Miscetti, M Mishina, G Mitselmakher, N Moggi, E Moore, R Moore, Y Morita, T Moulik, M Mulhearn, A Mukherjee, T Muller, A Munar, P Murat, S Murgia, J Nachtman, V Nagaslaev, S Nahn, H Nakada, I Nakano, C Nelson, T Nelson, C Neu, D Neuberger, C Newman-Holmes, C Y Ngan, H Niu, L Nodulman, A Nomerotski, S H Oh, Y D Oh, T Ohmoto, T Ohsugi, R Oishi, T Okusawa, J Olsen, W Orejudos, C Pagliarone, F Palmonari, R Paoletti, V Papadimitriou, D Partos, J Patrick, G Pauletta, M Paulini, C Paus, D Pellett, L Pescara, T J Phillips, G Piacentino, K T Pitts, A Pompos, L Pondrom, G Pope, M Popovic, F Prokoshin, J Proudfoot, F Ptohos, O Pukhov, G Punzi, A Rakitine, F Ratnikov, D Reher, A Reichold, A Ribon, W Riegler, F Rimondi, L Ristori, M Riveline, W J Robertson, A Robinson, T Rodrigo, S Rolli, L Rosenson, R Roser, R Rossin, A Roy, A Ruiz, A Safonov, R S Denis, W K Sakumoto, D Saltzberg, C Sanchez, A Sansoni, L Santi, H Sato, P Savard, P Schlabach, E E Schmidt, M P Schmidt, M Schmitt, L Scodellaro, A Scott, A Scribano, S Segler, S Seidel, Y Seiya, A Semenov, F Semeria, T Shah, M D Shapiro, P F Shepard, T Shibayama, M Shimojima, M Shochet, A Sidoti, J Siegrist, A Sill, P Sinervo, P Singh, A J Slaughter, K Sliwa, C Smith, F D Snider, A Solodsky, J Spalding, T Speer, P Sphicas, F Spinella, M Spiropulu, L Spiegel, J Steele, A Stefanini, J Strologas, F Strumia, D Stuart, K Sumorok, T Suzuki, T Takano, R Takashima, K Takikawa, P Tamburello, M Tanaka, B Tannenbaum, M Tecchio, R Tesarek, P K Teng, K Terashi, S Tether, A S Thompson, R Thurman-Keup, P Tipton, S Tkaczyk, D Toback, K Tollefson, A Tollestrup, D Tonelli, H Toyoda, W Trischuk, J F de Troconiz, J Tseng, N Turini, F Ukegawa, T Vaiciulis, J Valls, S Vejcik, G Velev, G Veramendi, R Vidal, I Vila, R Vilar, I Volobouev, M von der Mey, D Vucinic, R G Wagner, R L Wagner, N B Wallace, Z Wan, C Wang, M J Wang, B Ward, S Waschke, T Watanabe, D Waters, T Watts, R Webb, H Wenzel, W C Wester, A B Wicklund, E Wicklund, T Wilkes, H H Williams, P Wilson, B L Winer, D Winn, S Wolbers, D Wolinski, J Wolinski, S Wolinski, S Worm, X Wu, J Wyss, W Yao, G P Yeh, P Yeh, J Yoh, C Yosef, T Yoshida, I Yu, S Yu, Z Yu, A Zanetti, F Zetti, S Zucchelli,

Affiliations

  1. Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

PMID: 11736493 DOI: 10.1103/PhysRevLett.87.241802

Abstract

We report the first observation of diffractive J/psi(--> mu+mu-) production in pp collisions at root square[s] = 1.8 TeV. Diffractive events are identified by their rapidity gap signature. In a sample of events with two muons of transverse momentum p(mu)T>2 GeV/c within the pseudorapidity region /eta/ < 1.0, the ratio of diffractive to total J/psi production rates is found to be R(J/psi) = [1.45 +/- 0.25]%. The ratio R(J/psi)(x) is presented as a function of x-Bjorken. By combining it with our previously measured corresponding ratio R(jj)(x) for diffractive dijet production, we extract a value of 0.59 +/- 0.15 for the gluon fraction of the diffractive structure function of the proton.

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