Measurement of the proton structure function F-L(x, Q(2)) at low x

F. D. Aaron; C. Alexa; V. Andreev; B. Antunovic; S. Aplin; A. Asmone; A. Astvatsatourov; A. Bacchetta; S. Backovic; A. Baghdasaryan; P. Baranov; E. Barrelet; W. Bartel; M. Beckingharn; K. Begzsuren; O. Behnke; A. Belousov; N. Berger; J. C. Bizot; M. -O. Boenig; V. Boudry; I. Bozovic-Jelisavcic; J. Bracinik; G. Brandt; M. Brinkmann; V. Brisson; D. Bruncko; A. Bunyatyan; G. Buschhorn; L. Bystritskaya; A. J. Campbell; K. B. Cantun Avila; F. Cassol-Brunner; K. Cerny; V. Cerny; V. Chekelian; A. Cholewa; J. G. Contreras; J. A. Coughlan; G. Cozzika; J. Cvach; J. B. Dainton; K. Daum; M. Deak; Y. de Boer; B. Delcourt; M. Del Degan; J. Delvax; A. De Roeck; E. A. De Wolf; C. Diaconu; V. Dodonov; A. Dossanov; A. Dubak; G. Eckerlin; V. Efremenko; S. Egli; A. Eliseev; E. Elsen; S. Essenov; A. Falkiewicz; P. J. W. Faulkner; L. Favart; A. Fedotov; R. Felst; J. Feltesse; J. Ferencei; L. Finke; M. Fleischer; A. Fomenko; E. Gabathuler; J. Gayler; S. Ghazaryan; A. Glazov; I. Glushkov; L. Goerlich; M. Goettlich; N. Gogitidze; M. Gouzevitch; C. Grab; T. Greenshaw; B. R. Grell; G. Grindhammer; S. Habib; D. Haidt; Magnus Hansson; C. Helebrant; R. C. W. Henderson; H. Henschel; G. Herrera; M. Hildebrandt; K. H. Hiller; D. Hoffmann; R. Horisberger; A. Hovhannisyan; T. Hreus; M. Jacquet; M. E. Janssen; X. Janssen; V. Jemanov; Leif Jönsson; D. P. Johnson; A. W. Jung; H. Jung; M. Kapichine; J. Katzy; I. R. Kenyon; C. Kiesling; M. Klein; C. Kleinwort; T. Klimkovich; T. Kluge; A. Knutsson; R. Kogler; V. Korbel; P. Kostka; M. Kraemer; K. Krastev; J. Kretzschmar; A. Kropivnitskaya; K. Krueger; K. Kutak; M. P. J. Landon; W. Lange; G. Lastovicka-Medin; P. Laycock; A. Lebedev; G. Leibenguth; V. Lendermann; S. Levonian; G. Li; K. Lipka; A. Liptaj; B. List; J. List; N. Loktionova; R. Lopez-Fernandez; V. Lubimov; A. -I. Lucaci-Timoce; L. Lytkin; A. Makankine; E. Malinovski; P. Marage; Ll. Marti; H. -U. Martyn; S. J. Maxfield; A. Mehta; K. Meier; A. B. Meyer; H. Meyer; H. Meyer; J. Meyer; V. Michels; S. Mikocki; I. Milcewicz-Mika; F. Moreau; A. Morozov; J. V. Morris; M. U. Mozer; M. Mudrinic; K. Mueller; P. Murin; K. Nankov; B. Naroska; Th. Naumann; P. R. Newman; C. Niebuhr; A. Nikiforov; G. Nowak; K. Nowak; M. Nozicka; B. Olivier; J. E. Olsson; Sakar Osman; D. Ozerov; V. Palichik; I. Panagoulias; M. Pandurovic; Th. Papadopoulou; C. Pascaud; G. D. Patel; O. Pejchal; H. Peng; E. Perez; A. Petrukhin; I. Picuric; S. Piec; D. Pitzl; R. Placakyte; R. Polifka; B. Povh; T. Preda; V. Radescu; A. J. Rahmat; N. Raicevic; A. Raspiareza; T. Ravdandorj; P. Reimer; E. Rizvi; P. Robmann; B. Roland; R. Roosen; A. Rostovtsev; M. Rotaru; J. E. Ruiz Tabasco; Z. Rurikova; S. Rusakov; D. Salek; F. Salvaire; D. P. C. Sankey; M. Sauter; E. Sauvan; S. Schmidt; S. Schmitt; C. Schmitz; L. Schoeffel; A. Schoening; H. -C. Schultz-Coulon; F. Sefkow; R. N. Shaw-West; I. Sheviakov; L. N. Shtarkov; S. Shushkevich; T. Sloan; I. Smijanic; P. Smirnov; Y. Soloviev; P. Sopicki; D. South; V. Spaskov; A. Specka; Z. Staykova; M. Steder; B. Stella; U. Straumann; D. Sunar; T. Sykora; V. Tchoulakov; G. Thompson; P. D. Thompson; T. Toll; F. Tomasz; T. H. Tran; D. Traynor; T. N. Trinh; P. Truoel; I. Tsakov; B. Tseepeldorj; I. Tsurin; J. Turnau; E. Tzamariudaki; K. Urban; A. Valkarova; C. Vallee; P. Van Mechelen; A. Vargas Trevino; Y. Vazdik; S. Vinokurova; V. Volchinski; D. Wegener; M. Wessels; Ch. Wissing; E. Wuensch; V. Yeganov; J. Zacek; J. Zalesak; Z. Zhang; A. Zhelezov; A. Zhokin; Y. C. Zhu; T. Zimmermann; H. Zohrabyan; F. Zomer

doi:10.1016/j.physletb.2008.05.070

Measurement of the proton structure function F-L(x, Q(2)) at low x

F. D. Aaron, C. Alexa, V. Andreev, B. Antunovic, S. Aplin, A. Asmone, A. Astvatsatourov, A. Bacchetta, S. Backovic, A. Baghdasaryan, P. Baranov, E. Barrelet, W. Bartel, M. Beckingharn, K. Begzsuren, O. Behnke, A. Belousov, N. Berger, J. C. Bizot, M. -O. BoenigV. Boudry, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, D. Bruncko, A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, K. B. Cantun Avila, F. Cassol-Brunner, K. Cerny, V. Cerny, V. Chekelian, A. Cholewa, J. G. Contreras, J. A. Coughlan, G. Cozzika, J. Cvach, J. B. Dainton, K. Daum, M. Deak, Y. de Boer, B. Delcourt, M. Del Degan, J. Delvax, A. De Roeck, E. A. De Wolf, C. Diaconu, V. Dodonov, A. Dossanov, A. Dubak, G. Eckerlin, V. Efremenko, S. Egli, A. Eliseev, E. Elsen, S. Essenov, A. Falkiewicz, P. J. W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, L. Finke, M. Fleischer, A. Fomenko, E. Gabathuler, J. Gayler, S. Ghazaryan, A. Glazov, I. Glushkov, L. Goerlich, M. Goettlich, N. Gogitidze, M. Gouzevitch, C. Grab, T. Greenshaw, B. R. Grell, G. Grindhammer, S. Habib, D. Haidt, Magnus Hansson, C. Helebrant, R. C. W. Henderson, H. Henschel, G. Herrera, M. Hildebrandt, K. H. Hiller, D. Hoffmann, R. Horisberger, A. Hovhannisyan, T. Hreus, M. Jacquet, M. E. Janssen, X. Janssen, V. Jemanov, Leif Jönsson, D. P. Johnson, A. W. Jung, H. Jung, M. Kapichine, J. Katzy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Klimkovich, T. Kluge, A. Knutsson, R. Kogler, V. Korbel, P. Kostka, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krueger, K. Kutak, M. P. J. Landon, W. Lange, G. Lastovicka-Medin, P. Laycock, A. Lebedev, G. Leibenguth, V. Lendermann, S. Levonian, G. Li, K. Lipka, A. Liptaj, B. List, J. List, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, A. -I. Lucaci-Timoce, L. Lytkin, A. Makankine, E. Malinovski, P. Marage, Ll. Marti, H. -U. Martyn, S. J. Maxfield, A. Mehta, K. Meier, A. B. Meyer, H. Meyer, H. Meyer, J. Meyer, V. Michels, S. Mikocki, I. Milcewicz-Mika, F. Moreau, A. Morozov, J. V. Morris, M. U. Mozer, M. Mudrinic, K. Mueller, P. Murin, K. Nankov, B. Naroska, Th. Naumann, P. R. Newman, C. Niebuhr, A. Nikiforov, G. Nowak, K. Nowak, M. Nozicka, B. Olivier, J. E. Olsson, Sakar Osman, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, C. Pascaud, G. D. Patel, O. Pejchal, H. Peng, E. Perez, A. Petrukhin, I. Picuric, S. Piec, D. Pitzl, R. Placakyte, R. Polifka, B. Povh, T. Preda, V. Radescu, A. J. Rahmat, N. Raicevic, A. Raspiareza, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, M. Rotaru, J. E. Ruiz Tabasco, Z. Rurikova, S. Rusakov, D. Salek, F. Salvaire, D. P. C. Sankey, M. Sauter, E. Sauvan, S. Schmidt, S. Schmitt, C. Schmitz, L. Schoeffel, A. Schoening, H. -C. Schultz-Coulon, F. Sefkow, R. N. Shaw-West, I. Sheviakov, L. N. Shtarkov, S. Shushkevich, T. Sloan, I. Smijanic, P. Smirnov, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, Z. Staykova, M. Steder, B. Stella, U. Straumann, D. Sunar, T. Sykora, V. Tchoulakov, G. Thompson, P. D. Thompson, T. Toll, F. Tomasz, T. H. Tran, D. Traynor, T. N. Trinh, P. Truoel, I. Tsakov, B. Tseepeldorj, I. Tsurin, J. Turnau, E. Tzamariudaki, K. Urban, A. Valkarova, C. Vallee, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, S. Vinokurova, V. Volchinski, D. Wegener, M. Wessels, Ch. Wissing, E. Wuensch, V. Yeganov, J. Zacek, J. Zalesak, Z. Zhang, A. Zhelezov, A. Zhokin, Y. C. Zhu, T. Zimmermann, H. Zohrabyan, F. Zomer

Particle and nuclear physics

Research output: Contribution to journal › Article › peer-review

Abstract

A first measurement is reported of the longitudinal proton structure function FL(X, Q(2)) at the ep collider HERA. It is based on inclusive deep inelastic e(+)p scattering cross section measurements with a positron beam energy of 27.5 GeV and proton beam energies of 920, 575 and 460 GeV. Employing the energy dependence of the cross section, FL is measured in a range of squared four-momentum transfers 12 <= Q2 <=, 90 GeV2 and low Bjorken x 0.00024 <= x <= 0.0036. The F-L values agree with higher order QCD calculations based on parton densities obtained using cross section data previously measured at HERA. (C) 2008 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	139-146
Journal	Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	665
Issue number	4
DOIs	https://doi.org/10.1016/j.physletb.2008.05.070
Publication status	Published - 2008

Subject classification (UKÄ)

Subatomic Physics

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10.1016/j.physletb.2008.05.070

Cite this

Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Bacchetta, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Beckingharn, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., ... Zomer, F. (2008). Measurement of the proton structure function F-L(x, Q(2)) at low x. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 665(4), 139-146. https://doi.org/10.1016/j.physletb.2008.05.070

@article{66f77085d4144f0d858651cf64db921c,

title = "Measurement of the proton structure function F-L(x, Q(2)) at low x",

abstract = "A first measurement is reported of the longitudinal proton structure function FL(X, Q(2)) at the ep collider HERA. It is based on inclusive deep inelastic e(+)p scattering cross section measurements with a positron beam energy of 27.5 GeV and proton beam energies of 920, 575 and 460 GeV. Employing the energy dependence of the cross section, FL is measured in a range of squared four-momentum transfers 12 <= Q2 <=, 90 GeV2 and low Bjorken x 0.00024 <= x <= 0.0036. The F-L values agree with higher order QCD calculations based on parton densities obtained using cross section data previously measured at HERA. (C) 2008 Elsevier B.V. All rights reserved.",

author = "Aaron, {F. D.} and C. Alexa and V. Andreev and B. Antunovic and S. Aplin and A. Asmone and A. Astvatsatourov and A. Bacchetta and S. Backovic and A. Baghdasaryan and P. Baranov and E. Barrelet and W. Bartel and M. Beckingharn and K. Begzsuren and O. Behnke and A. Belousov and N. Berger and Bizot, {J. C.} and Boenig, {M. -O.} and V. Boudry and I. Bozovic-Jelisavcic and J. Bracinik and G. Brandt and M. Brinkmann and V. Brisson and D. Bruncko and A. Bunyatyan and G. Buschhorn and L. Bystritskaya and Campbell, {A. J.} and Avila, {K. B. Cantun} and F. Cassol-Brunner and K. Cerny and V. Cerny and V. Chekelian and A. Cholewa and Contreras, {J. G.} and Coughlan, {J. A.} and G. Cozzika and J. Cvach and Dainton, {J. B.} and K. Daum and M. Deak and {de Boer}, Y. and B. Delcourt and {Del Degan}, M. and J. Delvax and {De Roeck}, A. and {De Wolf}, {E. A.} and C. Diaconu and V. Dodonov and A. Dossanov and A. Dubak and G. Eckerlin and V. Efremenko and S. Egli and A. Eliseev and E. Elsen and S. Essenov and A. Falkiewicz and Faulkner, {P. J. W.} and L. Favart and A. Fedotov and R. Felst and J. Feltesse and J. Ferencei and L. Finke and M. Fleischer and A. Fomenko and E. Gabathuler and J. Gayler and S. Ghazaryan and A. Glazov and I. Glushkov and L. Goerlich and M. Goettlich and N. Gogitidze and M. Gouzevitch and C. Grab and T. Greenshaw and Grell, {B. R.} and G. Grindhammer and S. Habib and D. Haidt and Magnus Hansson and C. Helebrant and Henderson, {R. C. W.} and H. Henschel and G. Herrera and M. Hildebrandt and Hiller, {K. H.} and D. Hoffmann and R. Horisberger and A. Hovhannisyan and T. Hreus and M. Jacquet and Janssen, {M. E.} and X. Janssen and V. Jemanov and Leif J{\"o}nsson and Johnson, {D. P.} and Jung, {A. W.} and H. Jung and M. Kapichine and J. Katzy and Kenyon, {I. R.} and C. Kiesling and M. Klein and C. Kleinwort and T. Klimkovich and T. Kluge and A. Knutsson and R. Kogler and V. Korbel and P. Kostka and M. Kraemer and K. Krastev and J. Kretzschmar and A. Kropivnitskaya and K. Krueger and K. Kutak and Landon, {M. P. J.} and W. Lange and G. Lastovicka-Medin and P. Laycock and A. Lebedev and G. Leibenguth and V. Lendermann and S. Levonian and G. Li and K. Lipka and A. Liptaj and B. List and J. List and N. Loktionova and R. Lopez-Fernandez and V. Lubimov and Lucaci-Timoce, {A. -I.} and L. Lytkin and A. Makankine and E. Malinovski and P. Marage and Ll. Marti and Martyn, {H. -U.} and Maxfield, {S. J.} and A. Mehta and K. Meier and Meyer, {A. B.} and H. Meyer and H. Meyer and J. Meyer and V. Michels and S. Mikocki and I. Milcewicz-Mika and F. Moreau and A. Morozov and Morris, {J. V.} and Mozer, {M. U.} and M. Mudrinic and K. Mueller and P. Murin and K. Nankov and B. Naroska and Th. Naumann and Newman, {P. R.} and C. Niebuhr and A. Nikiforov and G. Nowak and K. Nowak and M. Nozicka and B. Olivier and Olsson, {J. E.} and Sakar Osman and D. Ozerov and V. Palichik and I. Panagoulias and M. Pandurovic and Th. Papadopoulou and C. Pascaud and Patel, {G. D.} and O. Pejchal and H. Peng and E. Perez and A. Petrukhin and I. Picuric and S. Piec and D. Pitzl and R. Placakyte and R. Polifka and B. Povh and T. Preda and V. Radescu and Rahmat, {A. J.} and N. Raicevic and A. Raspiareza and T. Ravdandorj and P. Reimer and E. Rizvi and P. Robmann and B. Roland and R. Roosen and A. Rostovtsev and M. Rotaru and Tabasco, {J. E. Ruiz} and Z. Rurikova and S. Rusakov and D. Salek and F. Salvaire and Sankey, {D. P. C.} and M. Sauter and E. Sauvan and S. Schmidt and S. Schmitt and C. Schmitz and L. Schoeffel and A. Schoening and Schultz-Coulon, {H. -C.} and F. Sefkow and Shaw-West, {R. N.} and I. Sheviakov and Shtarkov, {L. N.} and S. Shushkevich and T. Sloan and I. Smijanic and P. Smirnov and Y. Soloviev and P. Sopicki and D. South and V. Spaskov and A. Specka and Z. Staykova and M. Steder and B. Stella and U. Straumann and D. Sunar and T. Sykora and V. Tchoulakov and G. Thompson and Thompson, {P. D.} and T. Toll and F. Tomasz and Tran, {T. H.} and D. Traynor and Trinh, {T. N.} and P. Truoel and I. Tsakov and B. Tseepeldorj and I. Tsurin and J. Turnau and E. Tzamariudaki and K. Urban and A. Valkarova and C. Vallee and {Van Mechelen}, P. and Trevino, {A. Vargas} and Y. Vazdik and S. Vinokurova and V. Volchinski and D. Wegener and M. Wessels and Ch. Wissing and E. Wuensch and V. Yeganov and J. Zacek and J. Zalesak and Z. Zhang and A. Zhelezov and A. Zhokin and Zhu, {Y. C.} and T. Zimmermann and H. Zohrabyan and F. Zomer",

year = "2008",

doi = "10.1016/j.physletb.2008.05.070",

language = "English",

volume = "665",

pages = "139--146",

journal = "Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "4",

}

Aaron, FD, Alexa, C, Andreev, V, Antunovic, B, Aplin, S, Asmone, A, Astvatsatourov, A, Bacchetta, A, Backovic, S, Baghdasaryan, A, Baranov, P, Barrelet, E, Bartel, W, Beckingharn, M, Begzsuren, K, Behnke, O, Belousov, A, Berger, N, Bizot, JC, Boenig, M-O, Boudry, V, Bozovic-Jelisavcic, I, Bracinik, J, Brandt, G, Brinkmann, M, Brisson, V, Bruncko, D, Bunyatyan, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Avila, KBC, Cassol-Brunner, F, Cerny, K, Cerny, V, Chekelian, V, Cholewa, A, Contreras, JG, Coughlan, JA, Cozzika, G, Cvach, J, Dainton, JB, Daum, K, Deak, M, de Boer, Y, Delcourt, B, Del Degan, M, Delvax, J, De Roeck, A, De Wolf, EA, Diaconu, C, Dodonov, V, Dossanov, A, Dubak, A, Eckerlin, G, Efremenko, V, Egli, S, Eliseev, A, Elsen, E, Essenov, S, Falkiewicz, A, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Feltesse, J, Ferencei, J, Finke, L, Fleischer, M, Fomenko, A, Gabathuler, E, Gayler, J, Ghazaryan, S, Glazov, A, Glushkov, I, Goerlich, L, Goettlich, M, Gogitidze, N, Gouzevitch, M, Grab, C, Greenshaw, T, Grell, BR, Grindhammer, G, Habib, S, Haidt, D, Hansson, M, Helebrant, C, Henderson, RCW, Henschel, H, Herrera, G, Hildebrandt, M, Hiller, KH, Hoffmann, D, Horisberger, R, Hovhannisyan, A, Hreus, T, Jacquet, M, Janssen, ME, Janssen, X, Jemanov, V, Jönsson, L, Johnson, DP, Jung, AW, Jung, H, Kapichine, M, Katzy, J, Kenyon, IR, Kiesling, C, Klein, M, Kleinwort, C, Klimkovich, T, Kluge, T, Knutsson, A, Kogler, R, Korbel, V, Kostka, P, Kraemer, M, Krastev, K, Kretzschmar, J, Kropivnitskaya, A, Krueger, K, Kutak, K, Landon, MPJ, Lange, W, Lastovicka-Medin, G, Laycock, P, Lebedev, A, Leibenguth, G, Lendermann, V, Levonian, S, Li, G, Lipka, K, Liptaj, A, List, B, List, J, Loktionova, N, Lopez-Fernandez, R, Lubimov, V, Lucaci-Timoce, A-I, Lytkin, L, Makankine, A, Malinovski, E, Marage, P, Marti, L, Martyn, H-U, Maxfield, SJ, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, H, Meyer, J, Michels, V, Mikocki, S, Milcewicz-Mika, I, Moreau, F, Morozov, A, Morris, JV, Mozer, MU, Mudrinic, M, Mueller, K, Murin, P, Nankov, K, Naroska, B, Naumann, T, Newman, PR, Niebuhr, C, Nikiforov, A, Nowak, G, Nowak, K, Nozicka, M, Olivier, B, Olsson, JE, Osman, S, Ozerov, D, Palichik, V, Panagoulias, I, Pandurovic, M, Papadopoulou, T, Pascaud, C, Patel, GD, Pejchal, O, Peng, H, Perez, E, Petrukhin, A, Picuric, I, Piec, S, Pitzl, D, Placakyte, R, Polifka, R, Povh, B, Preda, T, Radescu, V, Rahmat, AJ, Raicevic, N, Raspiareza, A, Ravdandorj, T, Reimer, P, Rizvi, E, Robmann, P, Roland, B, Roosen, R, Rostovtsev, A, Rotaru, M, Tabasco, JER, Rurikova, Z, Rusakov, S, Salek, D, Salvaire, F, Sankey, DPC, Sauter, M, Sauvan, E, Schmidt, S, Schmitt, S, Schmitz, C, Schoeffel, L, Schoening, A, Schultz-Coulon, H-C, Sefkow, F, Shaw-West, RN, Sheviakov, I, Shtarkov, LN, Shushkevich, S, Sloan, T, Smijanic, I, Smirnov, P, Soloviev, Y, Sopicki, P, South, D, Spaskov, V, Specka, A, Staykova, Z, Steder, M, Stella, B, Straumann, U, Sunar, D, Sykora, T, Tchoulakov, V, Thompson, G, Thompson, PD, Toll, T, Tomasz, F, Tran, TH, Traynor, D, Trinh, TN, Truoel, P, Tsakov, I, Tseepeldorj, B, Tsurin, I, Turnau, J, Tzamariudaki, E, Urban, K, Valkarova, A, Vallee, C, Van Mechelen, P, Trevino, AV, Vazdik, Y, Vinokurova, S, Volchinski, V, Wegener, D, Wessels, M, Wissing, C, Wuensch, E, Yeganov, V, Zacek, J, Zalesak, J, Zhang, Z, Zhelezov, A, Zhokin, A, Zhu, YC, Zimmermann, T, Zohrabyan, H & Zomer, F 2008, 'Measurement of the proton structure function F-L(x, Q(2)) at low x', Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 665, no. 4, pp. 139-146. https://doi.org/10.1016/j.physletb.2008.05.070

TY - JOUR

T1 - Measurement of the proton structure function F-L(x, Q(2)) at low x

AU - Aaron, F. D.

AU - Alexa, C.

AU - Andreev, V.

AU - Antunovic, B.

AU - Aplin, S.

AU - Asmone, A.

AU - Astvatsatourov, A.

AU - Bacchetta, A.

AU - Backovic, S.

AU - Baghdasaryan, A.

AU - Baranov, P.

AU - Barrelet, E.

AU - Bartel, W.

AU - Beckingharn, M.

AU - Begzsuren, K.

AU - Behnke, O.

AU - Belousov, A.

AU - Berger, N.

AU - Bizot, J. C.

AU - Boenig, M. -O.

AU - Boudry, V.

AU - Bozovic-Jelisavcic, I.

AU - Bracinik, J.

AU - Brandt, G.

AU - Brinkmann, M.

AU - Brisson, V.

AU - Bruncko, D.

AU - Bunyatyan, A.

AU - Buschhorn, G.

AU - Bystritskaya, L.

AU - Campbell, A. J.

AU - Avila, K. B. Cantun

AU - Cassol-Brunner, F.

AU - Cerny, K.

AU - Cerny, V.

AU - Chekelian, V.

AU - Cholewa, A.

AU - Contreras, J. G.

AU - Coughlan, J. A.

AU - Cozzika, G.

AU - Cvach, J.

AU - Dainton, J. B.

AU - Daum, K.

AU - Deak, M.

AU - de Boer, Y.

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PY - 2008

Y1 - 2008

N2 - A first measurement is reported of the longitudinal proton structure function FL(X, Q(2)) at the ep collider HERA. It is based on inclusive deep inelastic e(+)p scattering cross section measurements with a positron beam energy of 27.5 GeV and proton beam energies of 920, 575 and 460 GeV. Employing the energy dependence of the cross section, FL is measured in a range of squared four-momentum transfers 12 <= Q2 <=, 90 GeV2 and low Bjorken x 0.00024 <= x <= 0.0036. The F-L values agree with higher order QCD calculations based on parton densities obtained using cross section data previously measured at HERA. (C) 2008 Elsevier B.V. All rights reserved.

AB - A first measurement is reported of the longitudinal proton structure function FL(X, Q(2)) at the ep collider HERA. It is based on inclusive deep inelastic e(+)p scattering cross section measurements with a positron beam energy of 27.5 GeV and proton beam energies of 920, 575 and 460 GeV. Employing the energy dependence of the cross section, FL is measured in a range of squared four-momentum transfers 12 <= Q2 <=, 90 GeV2 and low Bjorken x 0.00024 <= x <= 0.0036. The F-L values agree with higher order QCD calculations based on parton densities obtained using cross section data previously measured at HERA. (C) 2008 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.physletb.2008.05.070

DO - 10.1016/j.physletb.2008.05.070

M3 - Article

SN - 0370-2693

VL - 665

SP - 139

EP - 146

JO - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 4

ER -

Measurement of the proton structure function F-L(x, Q(2)) at low x

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