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Measurement of jet shapes in photoproduction at HERA

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Title:	Measurement of jet shapes in photoproduction at HERA
Authors:	Breitweg J, Derrick M, Krakauer D, Magill S, Mikunas D, Musgrave B, Repond J, Stanek R, Talaga RL, Yoshida R, Zhang H, Mattingly MCK, Anselmo F, Antonioli P, Bari G, Basile M, Bellagamba L, Boscherini D, Bruni A, Bruni G, Romeo GC, Castellini G, Cifarelli L, Cindolo F, Contin A, Corradi M, De Pasquale S, Gialas I, Giusti P, Iacobucci G, Laurenti G, Levi G, Margotti A, Massam T, Nania R, Palmonari F, Pesci A, Polini A, Ricci F, Sartorelli G, Garcia YZ, Zichichi A, Amelung C, Bornheim A, Brock I, Coboken K, Crittenden J, Deffner R, Eckert M, Grothe M, Hartmann H, Heinloth K, Heinz L, Hilger E, Jakob HP, Katz UF, Kerger R, Paul E, Pfeiffer M, Rembser C, Stamm J, Wedemeyer R, Wieber H, Bailey DS, Campbell Robson S, Cottingham WN, Foster B, Hall Wilton R, Hayes ME, Heath GP, Heath HF, McFall JD, Piccioni D, Roff DG, Tapper RJ, Arneodo M, Ayad R, CAPUA, Marcella, Garfagnini A, Iannotti L, Schioppa M, Susinno G, Kim JY, Lee JH, Lim IT, Pac MY, Caldwell A, Cartiglia H, Jing Z, Liu W, Mellado B, Parsons JA, Ritz S, Sampson S, Sciulli F, Straub PB, Zhu Q, Borzemski P, Chwastowski J, Eskreys A, Figiel J, Klimek K, Przybycien MB, Zawiejski L, Adamczyk L, Bednarek B, Bukowy M, Jelen K, Kisielewska D, Kowalski T, Przybycien M, Rulikowska Zarebska ER, Suszycki L, Zajac J, Dulinski Z, Kotanski A, Abbiendi G, Bauerdick LAT, Behrens U, Beier H, Bienlein JK, Cases G, Deppe O, Desler K, Drews G, Fricke U, Gilkinson DJ, Glasman C, Gottlicher P, Haas T, Hain W, Hasell D, Johnson KF, Kasemann M, Koch W, Kotz U, Kowalski H, Labs J, Lindemann L, Lohr B, Lowe M, Manczak O, Milewski J, Monteiro T, Ng JST, Notz D, Ohrenberg K, Park IH, Pellegrino A, Pelucchi F, Piotrzkowski K, Roco M, Rohde M, Roldan J, Ryan JJ, Savin AA, Schneekloth U, Selonke F, Surrow B, TASSI, Enrico, Voss T, Westphal D, Wolf G, Wollmer U, Youngman C, Zarnecki AF, Zeuner W, Burow BD, Grabosch HJ, Meyer A, Schlenstedt S, Barbagli G, Gallo E, Pelfer P, Maccarrone G, Votano L, Bamberger A, Eisenhardt S, Markun P, Trefzger T, Wolfle S, Bromley JT, Brook NH, Bussey PJ, Doyle AT, Macdonald N, Saxon DH, Sinclair LE, Strickland E, Waugh R, Bohnet I, Gendner N, Holm U, Meyer Larsen A, Salehi H, Wick K, Gladilin LK, Horstmann D, Kcira D, Klanner R, Lohrmann E, Poelz G, Schott W, Zetsche F, Bacon TC, Butterworth I, Cole JE, Howell G, Hung BHY, Lamberti L, Long KR, Miller DB, Pavel N, Prinias A, Sedgbeer JK, Sideris D, Mallik U, Wang SM, Wu JT, Cloth P, Filges D, Fleck JI, Ishii T, Kuze M, Suzuki I, Tokushuku K, Yamada S, Yamauchi K, Yamazaki Y, Hong SJ, Lee SB, Nam SW, Park SK, Barreiro F, Fernandez JP, Garcia G, Graciani R, Hernandez JM, Hervas L, Labarga L, Martinez M, del Peso J, Puga J, Terron J, de Troconiz JF, Corriveau F, Hanna DS, Hartmann J, Hung LW, Murray WN, Ochs A, Riveline M, Stairs DG, St Laurent M, Ullmann R, Tsurugai T, Bashkirov V, Dolgoshein BA, Stifutkin A, Bashindzhagyan GL, Ermolov PF, Golubkov YA, Khein LA, Korotkova NA, Korzhavina IA, Kuzmin VA, Lukina OY, Proskuryakov AS, Shcheglova LM, Solomin AN, Zotkin SA, Bokel C, Botje M, Brummer N, Chlebana F, Engelen J, Koffeman E, Kooijman P, van Sighem A, Tiecke H, Tuning N, Verkerke W, Vossebeld J, Vreeswijk M, Wiggers L, de Wolf E, Acosta D, Bylsma B, Durkin LS, Gilmore J, Ginsburg CM, Kim CL, Ling TY, Nylander P, Romanowski TA, Blaikley HE, Cashmore RJ, Cooper Sarkar AM, Devenish RCE, Edmonds JK, Grosse Knetter J, Harnew N, Nath C, Noyes VA, Quadt A, Ruske O, Tickner JR, Uijterwaal H, Walczak R, Waters DS, Bertolin A, Brugnera R, Carlin R, Dal Corso F, Dosselli U, Limentani S, Morandin M, Posocco M, Stanco L, Stroili R, Voci C, Bulmahn J, Oh BY, Okrasinski JR, Toothacker WS, Whitmore JJ, Iga Y, D'Agostini G, Marini G, Nigro A, Raso M, Hart JC, McCubbin NA, Shah TP, Epperson D, Heusch C, Rahn JT, Sadrozinski HFW, Seiden A, Wichmann R, Williams DC, Schwarzer O, Walenta AH, Abramowicz H, Briskin G, Dagan S, Kananov S, Levy A, Abe T, Fusayasu T, Inuzuka H, Nagano K, Umemori K, Yamashita T, Hamatsu R, Hirose T, Homma K, Kitamura S, Matsushita T, Cirio R, Costa M, Ferrero MI, Maselli S, Monaco V, Peroni C, Petrucci MC, Ruspa M, Sacchi R, Solano A, Staiano A, Dardo M, Bailey DC, Fagerstroem CP, Galea R, Hartner GF, Joo KK, Levman GM, Martin JF, Orr RS, Polenz S, Sabetfakhri A, Simmons D, Teuscher RJ, Butterworth JH, Catterall CD, Jones TW, Lane JB, Saunders RL, Sutton MR, Wing M, Ciborowski J, Grzelak G, Kasprzak M, Muchorowski K, Nowak RJ, Pawlak JM, Pawlak R, Tymieniecka T, Wroblewski AK, Zakrzewski JA, Adamus H, Coldewey C, Eisenberg Y, Hochman D, Karshon U, Badgett WF, Chapin D, Cross R, Dasu S, Foudas C, Loveless RJ, Mattingly S, Reeder DD, Smith WH, Vaiciulis A, Wodarczyk H, Bhadra S, Frisken WR, Khakzad M, Schmidke WB, Capua M, SCHIOPPA, Marco, Tassi E
Source:	The European physical journal / C 2(1), 61-(1998). doi:10.1007/s100520050124 Bailey, D, Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, R L, Yoshida, R, Zhang, H, Mattingly, M C K, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Cara Romeo, G, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, de Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Zamora Garcia, Y, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coböken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, H P, Katz, U F, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, D S, Campbell-Robson, S, Cottingham, W N, Foster, B, Hall-Wilton, R, Hayes, M E, Heath, G P, Heath, H F, McFall, J D, Piccioni, D, Roff, D G, Tapper, R J, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, J Y, Lee, J H, Lim, I T, Pac, M Y, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, J A, Ritz, S, Sampson, S, Sciulli, F, Straub, P B, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Jeleń, K, Kisielewska, D, Kowalski, T, Przybycień, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinński, Z, Kotanński, A, Abbiendi, G, Bauerdick, L A T, Behrens, U, Beier, H, Bienlein, J K, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, D J, Glasman, C, Göttlicher, P, Haas, T, Hain, W, Hasell, D, Johnson, K F, Kasemann, M, Koch, W, Kötz, U, Kowalski, H, Labs, J, Lindemann, L, Löhr, B, Löwe, M, Mańczak, O, Milewski, J, Monteiro, T, Ng, J S T, Notz, D, Ohrenberg, K, Park, I H, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldán, J, Ryan, J J, Savin, A A, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voß, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, A F, Zeuner, W, Burow, B D, Grabosch, H J, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wölfle, S, Bromley, J T, Brook, N H, Bussey, P J, Doyle, A T, Macdonald, N, Saxon, D H, Sinclair, L E, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, L K, Horstmann, D, Kçira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, T C, Butterworth, I, Cole, J E, Howell, G, Hung, B H Y, Lamberti, L, Long, K R, Miller, D B, Pavel, N, Prinias, A, Sedgbeer, J K, Sideris, D, Mallik, U, Wang, S M, Wu, J T, Cloth, P, Filges, D, Fleck, J I, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, S J, Lee, S B, Nam, S W, Park, S K, Barreiro, F, Fernández, J P, Garcia, G, Graciani, R, Hernández, J M, Hervás, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terrán, J, de Trocóniz, J F, Corriveau, F, Hanna, D S, Hartmann, J, Hung, L W, Murray, W N, Ochs, A, Riveline, M, Stairs, D G, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, B A, Stifutkin, A, Bashindzhagyan, G L, Ermolov, P F, Golubkov, Y A, Khein, L A, Korotkova, N A, Korzhavina, I A, Kuzmin, V A, Lukina, O Y, Proskuryakov, A S, Shcheglova, L M, Solomin, A N, Zotkin, S A, Bokel, C, Botje, M, Brümmer, N, Chlebana, F, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, L S, Gilmore, J, Ginsburg, C M, Kim, C L, Ling, T Y, Nylander, P, Romanowski, T A, Blaikley, H E, Cashmore, R J, Cooper-Sarkar, A M, Devenish, R C E, Edmonds, J K, Große-Knetter, J, Harnew, N, Nath, C, Noyes, V A, Quadt, A, Ruske, O, Tickner, J R, Uijterwaal, H, Walczak, R, Waters, D S, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, B Y, Okrasiński, J R, Toothacker, W S, Whitmore, J J, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, J C, McCubbin, N A, Shah, T P, Epperson, D, Heusch, C, Rahn, J T, Sadrozinski, H F W, Seiden, A, Wichmann, R, Williams, D C, Schwarzer, O, Walenta, A H, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Cirio, R, Costa, M, Ferrero, M I, Maselli, S, Monaco, V, Peroni, C, Petrucci, M C, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, D C, Fagerstroem, C P, Galea, R, Hartner, G F, Joo, K K, Levman, G M, Martin, J F, Orr, R S, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, R J, Butterworth, J M, Catterall, C D, Jones, T W, Lane, J B, Saunders, R L, Sutton, M R, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, R J, Pawlak, J M, Pawlak, R, Tymieniecka, T, Wráoblewski, A K, Zakrzewski, J A, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, W F, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, R J, Mattingly, S, Reeder, D D, Smith, W H, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Frisken, W R, Khakzad, M & Schmidke, W B 1998, 'Measurement of jet shapes in photoproduction at HERA', European Physical Journal C, vol. 2, no. 1, pp. 61-75.
Publisher Information:	Springer Nature, 1998.
Publication Year:	1998
Subject Terms:	jet: photoproduction, approx. 300 GeV-cms, multiple scattering: parton, transverse energy: dependence, ZEUS, event shape analysis, positron p: colliding beams, rapidity dependence, final state: (2jet), DESY HERA Stor, energy flow: hadronic, gluon: jet, showers: parton, LUND MONTE-CARLO, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, CROSS-SECTIONS, PARTON DISTRIBUTIONS, HADRON COLLIDERS, HARD SCATTERING, 3-JET EVENTS, COLLISIONS, photon: resolved, quark: jet, quantum chromodynamics: perturbation theory, photon p: inclusive reaction, experimental results
Description:	The shape of jets produced in quasi-real photon-proton collisions at centre-of-mass energies in the range 134-277 GeV has been measured using the hadronic energy flow. The measurement was done with the ZEUS detector at HERA. Jets are identified using a cone algorithm in the eta - phi plane with a cone radius of one unit. Measured jet shapes both in inclusive jet and dijet production with transverse energies E(T)(jet) > 14 GeV are presented. The jet shape broadens as the jet pseudorapidity (eta(jet)) increases and narrows as E(T)(jet) increases. In dijet photoproduction, the jet shapes have been measured separately for samples dominated by resolved and by direct processes, Leading-logarithm parton-shower Monte Carlo calculations of resolved and direct processes describe well the measured jet shapes except for the inclusive production of jets with high eta(jet) and low E(T)(jet). The observed broadening of the jet shape as eta(jet) increases is consistent with the predicted increase in the fraction of final state gluon jets. RI De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; Bashkirov, Vladimir/A-4818-2008; Doyle, Anthony/C-5889-2009; Gladilin, Leonid/B-5226-2011; Golubkov, Yury/E-1643-2012 The shape of jets produced in quasi-real photon-proton collisions at centre-of-mass energies in the range 134-277 GeV has been measured using the hadronic energy flow. The measurement was done with the ZEUS detector at HERA. Jets are identified using a cone algorithm in the eta - phi plane with a cone radius of one unit. Measured jet shapes both in inclusive jet and dijet production with transverse energies E(T)(jet) > 14 GeV are presented. The jet shape broadens as the jet pseudorapidity (eta(jet)) increases and narrows as E(T)(jet) increases. In dijet photoproduction, the jet shapes have been measured separately for samples dominated by resolved and by direct processes, Leading-logarithm parton-shower Monte Carlo calculations of resolved and direct processes describe well the measured jet shapes except for the inclusive production of jets with high eta(jet) and low E(T)(jet). The observed broadening of the jet shape as eta(jet) increases is consistent with the predicted increase in the fraction of final state gluon jets.
Document Type:	Article
File Description:	application/pdf
Language:	English
ISSN:	1434-6052 1434-6044
DOI:	10.1007/s100500050091
Access URL:	https://research.manchester.ac.uk/en/publications/f655ecce-a802-43db-8360-ab1dbd555ae4 https://bib-pubdb1.desy.de/record/330930 https://hdl.handle.net/20.500.11770/145200 https://doi.org/10.1007/s100500050091 https://hdl.handle.net/11573/496890 https://doi.org/10.1007/s100500050091
Accession Number:	edsair.dedup.wf.002..89c7a80a66ac868ceb972ae052a1eee6
Database:	OpenAIRE

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Abstract:	The shape of jets produced in quasi-real photon-proton collisions at centre-of-mass energies in the range 134-277 GeV has been measured using the hadronic energy flow. The measurement was done with the ZEUS detector at HERA. Jets are identified using a cone algorithm in the eta - phi plane with a cone radius of one unit. Measured jet shapes both in inclusive jet and dijet production with transverse energies E(T)(jet) > 14 GeV are presented. The jet shape broadens as the jet pseudorapidity (eta(jet)) increases and narrows as E(T)(jet) increases. In dijet photoproduction, the jet shapes have been measured separately for samples dominated by resolved and by direct processes, Leading-logarithm parton-shower Monte Carlo calculations of resolved and direct processes describe well the measured jet shapes except for the inclusive production of jets with high eta(jet) and low E(T)(jet). The observed broadening of the jet shape as eta(jet) increases is consistent with the predicted increase in the fraction of final state gluon jets. RI De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; Bashkirov, Vladimir/A-4818-2008; Doyle, Anthony/C-5889-2009; Gladilin, Leonid/B-5226-2011; Golubkov, Yury/E-1643-2012<br />The shape of jets produced in quasi-real photon-proton collisions at centre-of-mass energies in the range 134-277 GeV has been measured using the hadronic energy flow. The measurement was done with the ZEUS detector at HERA. Jets are identified using a cone algorithm in the eta - phi plane with a cone radius of one unit. Measured jet shapes both in inclusive jet and dijet production with transverse energies E(T)(jet) > 14 GeV are presented. The jet shape broadens as the jet pseudorapidity (eta(jet)) increases and narrows as E(T)(jet) increases. In dijet photoproduction, the jet shapes have been measured separately for samples dominated by resolved and by direct processes, Leading-logarithm parton-shower Monte Carlo calculations of resolved and direct processes describe well the measured jet shapes except for the inclusive production of jets with high eta(jet) and low E(T)(jet). The observed broadening of the jet shape as eta(jet) increases is consistent with the predicted increase in the fraction of final state gluon jets.
ISSN:	14346052 14346044
DOI:	10.1007/s100500050091