Search for light gravitinos in events with photons and missing transverse momentum at HERA

A. Aktas; V. Andreev; T. Anthonis; A. Asmone; A. Babaev; S. Backovic; J. Bähr; P. Baranov; E. Barrelet; W. Bartel; S. Baumgartner; J. Becker; M. Beckingham; O. Behnke; O. Behrendt; A. Belousov; Ch Berger; N. Berger; T. Berndt; J. C. Bizot; J. Böhme; M. O. Boenig; V. Boudry; J. Bracinik; V. Brisson; H. B. Bröker; D. P. Brown; D. Bruncko; F. W. Büsser; A. Bunyatyan; G. Buschhorn; L. Bystritskaya; A. J. Campbell; S. Caron; F. Cassol-Brunner; K. Cerny; V. Chekelian; J. G. Contreras; Y. R. Coppens; J. A. Coughlan; B. E. Cox; G. Cozzika; J. Cvach; J. B. Dainton; W. D. Dau; K. Daum; B. Delcourt; R. Demirchyan; A. De Roeck; K. Desch; E. A. De Wolf; C. Diaconu; J. Dingfelder; V. Dodonov; A. Dubak; C. Duprel; G. Eckerlin; V. Efremenko; S. Egli; R. Eichler; F. Eisele; M. Ellerbrock; E. Elsen; W. Erdmann; P. J.W. Faulkner; L. Favart; A. Fedotov; R. Felst; J. Ferencei; M. Fleischer; P. Fleischmann; Y. H. Fleming; G. Flucke; G. Flügge; A. Fomenko; I. Foresti; J. Formánek; G. Franke; G. Frising; E. Gabathuler; K. Gabathuler; E. Garutti; J. Garvey; J. Gayler; R. Gerhards; C. Gerlich; S. Ghazaryan; S. Ginzburgskaya; L. Goerlich; N. Gogitidze; S. Gorbounov; C. Grab; H. Grässler; T. Greenshaw; M. Gregori; G. Grindhammer; C. Gwilliam; D. Haidt; L. Hajduk; J. Haller; M. Hansson; G. Heinzelmann; R. C.W. Henderson; H. Henschel; O. Henshaw; G. Herrera; I. Herynek; R. D. Heuer; M. Hildebrandt; K. H. Hiller; P. Höting; D. Hoffmann; R. Horisberger; A. Hovhannisyan; M. Ibbotson; M. Ismail; M. Jacquet; L. Janauschek; X. Janssen; V. Jemanov; L. Jönsson; D. P. Johnson; H. Jung; D. Kant; M. Kapichine; M. Karlsson; J. Katzy; N. Keller; I. R. Kenyon; C. Kiesling; M. Klein; C. Kleinwort; T. Klimkovich; T. Kluge; G. Knies; A. Knutsson; B. Koblitz; V. Korbel; P. Kostka; R. Koutouev; A. Kropivnitskaya; J. Kroseberg; K. Krüger; J. Kückens; M. P.J. Landon; W. Lange; T. Laštovička; P. Laycock; A. Lebedev; B. Leißner; R. Lemrani; V. Lendermann; S. Levonian; L. Lindfeld; K. Lipka; B. List; E. Lobodzinska; N. Loktionova; R. Lopez-Fernandez; V. Lubimov; H. Lueders; D. Lüke; T. Lux; L. Lytkin; A. Makankine; N. Malden; E. Malinovski; S. Mangano; P. Marage; J. Marks; R. Marshall; M. Martisikova; H. U. Martyn; S. J. Maxfield; D. Meer; A. Mehta; K. Meier; A. B. Meyer; H. Meyer; J. Meyer; S. Mikocki; I. Milcewicz-Mika; D. Milstead; A. Mohamed; F. Moreau; A. Morozov; J. V. Morris; M. U. Mozer; K. Müller; P. Murín; V. Nagovizin; K. Nankov; B. Naroska; J. Naumann; Th Naumann; P. R. Newman; C. Niebuhr; A. Nikiforov; D. Nikitin; G. Nowak; M. Nozicka; R. Oganezov; B. Olivier; J. E. Olsson; D. Ozerov; A. Paramonov; C. Pascaud; G. D. Patel; M. Peez; E. Perez; A. Perieanu; A. Petrukhin; D. Pitzl; R. Plačakyte; R. Pöschl; B. Portheault; B. Povh; N. Raicevic; P. Reimer; B. Reisert; A. Rimmer; C. Risler; E. Rizvi; P. Robmann; B. Roland; R. Roosen; A. Rostovtsev; Z. Rurikova; S. Rusakov; K. Rybicki; D. P.C. Sankey; E. Sauvan; S. Schätzel; J. Scheins; F. P. Schilling; P. Schleper; S. Schmidt; S. Schmitt; M. Schneider; L. Schoeffel; A. Schöning; V. Schröder; H. C. Schultz-Coulon; C. Schwanenberger; K. Sedlák; F. Sefkow; I. Sheviakov; L. N. Shtarkov; Y. Sirois; T. Sloan; P. Smirnov; Y. Soloviev; D. South; V. Spaskov; A. Specka; H. Spitzer; R. Stamen; B. Stella; J. Stiewe; I. Strauch; U. Straumann; V. Tchoulakov; G. Thompson; P. D. Thompson; F. Tomasz; D. Traynor; P. Truöl; G. Tsipolitis; I. Tsurin; J. Turnau; E. Tzamariudaki; A. Uraev; M. Urban; A. Usik; D. Utkin; S. Valkár; A. Valkárová; C. Vallée; P. Van Mechelen; N. Van Remortel; A. Vargas Trevino; Y. Vazdik; C. Veelken; A. Vest; S. Vinokurova; V. Volchinski; K. Wacker; J. Wagner; G. Weber; R. Weber; D. Wegener; C. Werner; N. Werner; M. Wessels; B. Wessling; G. G. Winter; Ch Wissing; E. E. Woehrling; R. Wolf; E. Wünsch; S. Xella; W. Yan; V. Yeganov; J. Žáček; J. Zálešák; Z. Zhang; A. Zhelezov; A. Zhokin; H. Zohrabyan; F. Zomer

doi:10.1016/j.physletb.2005.04.038

Search for light gravitinos in events with photons and missing transverse momentum at HERA

A. Aktas^*, V. Andreev, T. Anthonis, A. Asmone, A. Babaev, S. Backovic, J. Bähr, P. Baranov, E. Barrelet, W. Bartel, S. Baumgartner, J. Becker, M. Beckingham, O. Behnke, O. Behrendt, A. Belousov, Ch Berger, N. Berger, T. Berndt, J. C. BizotJ. Böhme, M. O. Boenig, V. Boudry, J. Bracinik, V. Brisson, H. B. Bröker, D. P. Brown, D. Bruncko, F. W. Büsser, A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, S. Caron, F. Cassol-Brunner, K. Cerny, V. Chekelian, J. G. Contreras, Y. R. Coppens, J. A. Coughlan, B. E. Cox, G. Cozzika, J. Cvach, J. B. Dainton, W. D. Dau, K. Daum, B. Delcourt, R. Demirchyan, A. De Roeck, K. Desch, E. A. De Wolf, C. Diaconu, J. Dingfelder, V. Dodonov, A. Dubak, C. Duprel, G. Eckerlin, V. Efremenko, S. Egli, R. Eichler, F. Eisele, M. Ellerbrock, E. Elsen, W. Erdmann, P. J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Ferencei, M. Fleischer, P. Fleischmann, Y. H. Fleming, G. Flucke, G. Flügge, A. Fomenko, I. Foresti, J. Formánek, G. Franke, G. Frising, E. Gabathuler, K. Gabathuler, E. Garutti, J. Garvey, J. Gayler, R. Gerhards, C. Gerlich, S. Ghazaryan, S. Ginzburgskaya, L. Goerlich, N. Gogitidze, S. Gorbounov, C. Grab, H. Grässler, T. Greenshaw, M. Gregori, G. Grindhammer, C. Gwilliam, D. Haidt, L. Hajduk, J. Haller, M. Hansson, G. Heinzelmann, R. C.W. Henderson, H. Henschel, O. Henshaw, G. Herrera, I. Herynek, R. D. Heuer, M. Hildebrandt, K. H. Hiller, P. Höting, D. Hoffmann, R. Horisberger, A. Hovhannisyan, M. Ibbotson, M. Ismail, M. Jacquet, L. Janauschek, X. Janssen, V. Jemanov, L. Jönsson, D. P. Johnson, H. Jung, D. Kant, M. Kapichine, M. Karlsson, J. Katzy, N. Keller, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Klimkovich, T. Kluge, G. Knies, A. Knutsson, B. Koblitz, V. Korbel, P. Kostka, R. Koutouev, A. Kropivnitskaya, J. Kroseberg, K. Krüger, J. Kückens, M. P.J. Landon, W. Lange, T. Laštovička, P. Laycock, A. Lebedev, B. Leißner, R. Lemrani, V. Lendermann, S. Levonian, L. Lindfeld, K. Lipka, B. List, E. Lobodzinska, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, H. Lueders, D. Lüke, T. Lux, L. Lytkin, A. Makankine, N. Malden, E. Malinovski, S. Mangano, P. Marage, J. Marks, R. Marshall, M. Martisikova, H. U. Martyn, S. J. Maxfield, D. Meer, A. Mehta, K. Meier, A. B. Meyer, H. Meyer, J. Meyer, S. Mikocki, I. Milcewicz-Mika, D. Milstead, A. Mohamed, F. Moreau, A. Morozov, J. V. Morris, M. U. Mozer, K. Müller, P. Murín, V. Nagovizin, K. Nankov, B. Naroska, J. Naumann, Th Naumann, P. R. Newman, C. Niebuhr, A. Nikiforov, D. Nikitin, G. Nowak, M. Nozicka, R. Oganezov, B. Olivier, J. E. Olsson, D. Ozerov, A. Paramonov, C. Pascaud, G. D. Patel, M. Peez, E. Perez, A. Perieanu, A. Petrukhin, D. Pitzl, R. Plačakyte, R. Pöschl, B. Portheault, B. Povh, N. Raicevic, P. Reimer, B. Reisert, A. Rimmer, C. Risler, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, Z. Rurikova, S. Rusakov, K. Rybicki, D. P.C. Sankey, E. Sauvan, S. Schätzel, J. Scheins, F. P. Schilling, P. Schleper, S. Schmidt, S. Schmitt, M. Schneider, L. Schoeffel, A. Schöning, V. Schröder, H. C. Schultz-Coulon, C. Schwanenberger, K. Sedlák, F. Sefkow, I. Sheviakov, L. N. Shtarkov, Y. Sirois, T. Sloan, P. Smirnov, Y. Soloviev, D. South, V. Spaskov, A. Specka, H. Spitzer, R. Stamen, B. Stella, J. Stiewe, I. Strauch, U. Straumann, V. Tchoulakov, G. Thompson, P. D. Thompson, F. Tomasz, D. Traynor, P. Truöl, G. Tsipolitis, I. Tsurin, J. Turnau, E. Tzamariudaki, A. Uraev, M. Urban, A. Usik, D. Utkin, S. Valkár, A. Valkárová, C. Vallée, P. Van Mechelen, N. Van Remortel, A. Vargas Trevino, Y. Vazdik, C. Veelken, A. Vest, S. Vinokurova, V. Volchinski, K. Wacker, J. Wagner, G. Weber, R. Weber, D. Wegener, C. Werner, N. Werner, M. Wessels, B. Wessling, G. G. Winter, Ch Wissing, E. E. Woehrling, R. Wolf, E. Wünsch, S. Xella, W. Yan, V. Yeganov, J. Žáček, J. Zálešák, Z. Zhang, A. Zhelezov, A. Zhokin, H. Zohrabyan, F. Zomer

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

A search for gravitinos produced in e^±p collisions is performed using the H1 detector at HERA. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb ^-1 for e⁺p collisions and 13.5 pb^-1 for e ^-p collisions. If R-parity is not conserved, the t-channel exchange of a selectron can produce a neutralino, which, in models where the gravitino is the lightest supersymmetric particle, subsequently decays into a photon and a light gravitino. The resulting event signature, which involves an isolated photon, a jet and missing transverse energy, is analysed for the first time at HERA. No deviation from the Standard Model is found. Exclusion limits on the cross section and on R-parity-violating Yukawa couplings are derived in a Gauge Mediated Supersymmetry Breaking scenario. The results are independent of the squark sector. Neutralinos and supersymmetric partners of the left-handed electron with masses up to 112 GeV and 164 GeV, respectively, can be ruled out at the 95% confidence level for R-parity-violating couplings λ′ equal to 1, in some parts of the parameter space of the considered model.

Original language	English
Pages (from-to)	31-42
Number of pages	12
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	616
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2005.04.038
Publication status	Published - Jun 9 2005
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2005.04.038

Cite this

Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bähr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, C., Berger, N., Berndt, T., ... Zomer, F. (2005). Search for light gravitinos in events with photons and missing transverse momentum at HERA. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 616(1-2), 31-42. https://doi.org/10.1016/j.physletb.2005.04.038

Aktas, A, Andreev, V, Anthonis, T, Asmone, A, Babaev, A, Backovic, S, Bähr, J, Baranov, P, Barrelet, E, Bartel, W, Baumgartner, S, Becker, J, Beckingham, M, Behnke, O, Behrendt, O, Belousov, A, Berger, C, Berger, N, Berndt, T, Bizot, JC, Böhme, J, Boenig, MO, Boudry, V, Bracinik, J, Brisson, V, Bröker, HB, Brown, DP, Bruncko, D, Büsser, FW, Bunyatyan, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Caron, S, Cassol-Brunner, F, Cerny, K, Chekelian, V, Contreras, JG, Coppens, YR, Coughlan, JA, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Delcourt, B, Demirchyan, R, De Roeck, A, Desch, K, De Wolf, EA, Diaconu, C, Dingfelder, J, Dodonov, V, Dubak, A, Duprel, C, Eckerlin, G, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Ellerbrock, M, Elsen, E, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Fleischer, M, Fleischmann, P, Fleming, YH, Flucke, G, Flügge, G, Fomenko, A, Foresti, I, Formánek, J, Franke, G, Frising, G, Gabathuler, E, Gabathuler, K, Garutti, E, Garvey, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Ginzburgskaya, S, Goerlich, L, Gogitidze, N, Gorbounov, S, Grab, C, Grässler, H, Greenshaw, T, Gregori, M, Grindhammer, G, Gwilliam, C, Haidt, D, Hajduk, L, Haller, J, Hansson, M, Heinzelmann, G, Henderson, RCW, Henschel, H, Henshaw, O, Herrera, G, Herynek, I, Heuer, RD, Hildebrandt, M, Hiller, KH, Höting, P, Hoffmann, D, Horisberger, R, Hovhannisyan, A, Ibbotson, M, Ismail, M, Jacquet, M, Janauschek, L, Janssen, X, Jemanov, V, Jönsson, L, Johnson, DP, Jung, H, Kant, D, Kapichine, M, Karlsson, M, Katzy, J, Keller, N, Kenyon, IR, Kiesling, C, Klein, M, Kleinwort, C, Klimkovich, T, Kluge, T, Knies, G, Knutsson, A, Koblitz, B, Korbel, V, Kostka, P, Koutouev, R, Kropivnitskaya, A, Kroseberg, J, Krüger, K, Kückens, J, Landon, MPJ, Lange, W, Laštovička, T, Laycock, P, Lebedev, A, Leißner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindfeld, L, Lipka, K, List, B, Lobodzinska, E, Loktionova, N, Lopez-Fernandez, R, Lubimov, V, Lueders, H, Lüke, D, Lux, T, Lytkin, L, Makankine, A, Malden, N, Malinovski, E, Mangano, S, Marage, P, Marks, J, Marshall, R, Martisikova, M, Martyn, HU, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Mikocki, S, Milcewicz-Mika, I, Milstead, D, Mohamed, A, Moreau, F, Morozov, A, Morris, JV, Mozer, MU, Müller, K, Murín, P, Nagovizin, V, Nankov, K, Naroska, B, Naumann, J, Naumann, T, Newman, PR, Niebuhr, C, Nikiforov, A, Nikitin, D, Nowak, G, Nozicka, M, Oganezov, R, Olivier, B, Olsson, JE, Ozerov, D, Paramonov, A, Pascaud, C, Patel, GD, Peez, M, Perez, E, Perieanu, A, Petrukhin, A, Pitzl, D, Plačakyte, R, Pöschl, R, Portheault, B, Povh, B, Raicevic, N, Reimer, P, Reisert, B, Rimmer, A, Risler, C, Rizvi, E, Robmann, P, Roland, B, Roosen, R, Rostovtsev, A, Rurikova, Z, Rusakov, S, Rybicki, K, Sankey, DPC, Sauvan, E, Schätzel, S, Scheins, J, Schilling, FP, Schleper, P, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schöning, A, Schröder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlák, K, Sefkow, F, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Strauch, I, Straumann, U, Tchoulakov, V, Thompson, G, Thompson, PD, Tomasz, F, Traynor, D, Truöl, P, Tsipolitis, G, Tsurin, I, Turnau, J, Tzamariudaki, E, Uraev, A, Urban, M, Usik, A, Utkin, D, Valkár, S, Valkárová, A, Vallée, C, Van Mechelen, P, Van Remortel, N, Vargas Trevino, A, Vazdik, Y, Veelken, C, Vest, A, Vinokurova, S, Volchinski, V, Wacker, K, Wagner, J, Weber, G, Weber, R, Wegener, D, Werner, C, Werner, N, Wessels, M, Wessling, B, Winter, GG, Wissing, C, Woehrling, EE, Wolf, R, Wünsch, E, Xella, S, Yan, W, Yeganov, V, Žáček, J, Zálešák, J, Zhang, Z, Zhelezov, A, Zhokin, A, Zohrabyan, H & Zomer, F 2005, 'Search for light gravitinos in events with photons and missing transverse momentum at HERA', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 616, no. 1-2, pp. 31-42. https://doi.org/10.1016/j.physletb.2005.04.038

@article{d60fedf1a7c14c6ba3b2929546622aee,

title = "Search for light gravitinos in events with photons and missing transverse momentum at HERA",

abstract = "A search for gravitinos produced in e±p collisions is performed using the H1 detector at HERA. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb -1 for e+p collisions and 13.5 pb-1 for e -p collisions. If R-parity is not conserved, the t-channel exchange of a selectron can produce a neutralino, which, in models where the gravitino is the lightest supersymmetric particle, subsequently decays into a photon and a light gravitino. The resulting event signature, which involves an isolated photon, a jet and missing transverse energy, is analysed for the first time at HERA. No deviation from the Standard Model is found. Exclusion limits on the cross section and on R-parity-violating Yukawa couplings are derived in a Gauge Mediated Supersymmetry Breaking scenario. The results are independent of the squark sector. Neutralinos and supersymmetric partners of the left-handed electron with masses up to 112 GeV and 164 GeV, respectively, can be ruled out at the 95% confidence level for R-parity-violating couplings λ′ equal to 1, in some parts of the parameter space of the considered model.",

author = "A. Aktas and V. Andreev and T. Anthonis and A. Asmone and A. Babaev and S. Backovic and J. B{\"a}hr and P. Baranov and E. Barrelet and W. Bartel and S. Baumgartner and J. Becker and M. Beckingham and O. Behnke and O. Behrendt and A. Belousov and Ch Berger and N. Berger and T. Berndt and Bizot, {J. C.} and J. B{\"o}hme and Boenig, {M. O.} and V. Boudry and J. Bracinik and V. Brisson and Br{\"o}ker, {H. B.} and Brown, {D. P.} and D. Bruncko and B{\"u}sser, {F. W.} and A. Bunyatyan and G. Buschhorn and L. Bystritskaya and Campbell, {A. J.} and S. Caron and F. Cassol-Brunner and K. Cerny and V. Chekelian and Contreras, {J. G.} and Coppens, {Y. R.} and Coughlan, {J. A.} and Cox, {B. E.} and G. Cozzika and J. Cvach and Dainton, {J. B.} and Dau, {W. D.} and K. Daum and B. Delcourt and R. Demirchyan and {De Roeck}, A. and K. Desch and {De Wolf}, {E. A.} and C. Diaconu and J. Dingfelder and V. Dodonov and A. Dubak and C. Duprel and G. Eckerlin and V. Efremenko and S. Egli and R. Eichler and F. Eisele and M. Ellerbrock and E. Elsen and W. Erdmann and Faulkner, {P. J.W.} and L. Favart and A. Fedotov and R. Felst and J. Ferencei and M. Fleischer and P. Fleischmann and Fleming, {Y. H.} and G. Flucke and G. Fl{\"u}gge and A. Fomenko and I. Foresti and J. Form{\'a}nek and G. Franke and G. Frising and E. Gabathuler and K. Gabathuler and E. Garutti and J. Garvey and J. Gayler and R. Gerhards and C. Gerlich and S. Ghazaryan and S. Ginzburgskaya and L. Goerlich and N. Gogitidze and S. Gorbounov and C. Grab and H. Gr{\"a}ssler and T. Greenshaw and M. Gregori and G. Grindhammer and C. Gwilliam and D. Haidt and L. Hajduk and J. Haller and M. Hansson and G. Heinzelmann and Henderson, {R. C.W.} and H. Henschel and O. Henshaw and G. Herrera and I. Herynek and Heuer, {R. D.} and M. Hildebrandt and Hiller, {K. H.} and P. H{\"o}ting and D. Hoffmann and R. Horisberger and A. Hovhannisyan and M. Ibbotson and M. Ismail and M. Jacquet and L. Janauschek and X. Janssen and V. Jemanov and L. J{\"o}nsson and Johnson, {D. P.} and H. Jung and D. Kant and M. Kapichine and M. Karlsson and J. Katzy and N. Keller and Kenyon, {I. R.} and C. Kiesling and M. Klein and C. Kleinwort and T. Klimkovich and T. Kluge and G. Knies and A. Knutsson and B. Koblitz and V. Korbel and P. Kostka and R. Koutouev and A. Kropivnitskaya and J. Kroseberg and K. Kr{\"u}ger and J. K{\"u}ckens and Landon, {M. P.J.} and W. Lange and T. La{\v s}tovi{\v c}ka and P. Laycock and A. Lebedev and B. Lei{\ss}ner and R. Lemrani and V. Lendermann and S. Levonian and L. Lindfeld and K. Lipka and B. List and E. Lobodzinska and N. Loktionova and R. Lopez-Fernandez and V. Lubimov and H. Lueders and D. L{\"u}ke and T. Lux and L. Lytkin and A. Makankine and N. Malden and E. Malinovski and S. Mangano and P. Marage and J. Marks and R. Marshall and M. Martisikova and Martyn, {H. U.} and Maxfield, {S. J.} and D. Meer and A. Mehta and K. Meier and Meyer, {A. B.} and H. Meyer and J. Meyer and S. Mikocki and I. Milcewicz-Mika and D. Milstead and A. Mohamed and F. Moreau and A. Morozov and Morris, {J. V.} and Mozer, {M. U.} and K. M{\"u}ller and P. Mur{\'i}n and V. Nagovizin and K. Nankov and B. Naroska and J. Naumann and Th Naumann and Newman, {P. R.} and C. Niebuhr and A. Nikiforov and D. Nikitin and G. Nowak and M. Nozicka and R. Oganezov and B. Olivier and Olsson, {J. E.} and D. Ozerov and A. Paramonov and C. Pascaud and Patel, {G. D.} and M. Peez and E. Perez and A. Perieanu and A. Petrukhin and D. Pitzl and R. Pla{\v c}akyte and R. P{\"o}schl and B. Portheault and B. Povh and N. Raicevic and P. Reimer and B. Reisert and A. Rimmer and C. Risler and E. Rizvi and P. Robmann and B. Roland and R. Roosen and A. Rostovtsev and Z. Rurikova and S. Rusakov and K. Rybicki and Sankey, {D. P.C.} and E. Sauvan and S. Sch{\"a}tzel and J. Scheins and Schilling, {F. P.} and P. Schleper and S. Schmidt and S. Schmitt and M. Schneider and L. Schoeffel and A. Sch{\"o}ning and V. Schr{\"o}der and Schultz-Coulon, {H. C.} and C. Schwanenberger and K. Sedl{\'a}k and F. Sefkow and I. Sheviakov and Shtarkov, {L. N.} and Y. Sirois and T. Sloan and P. Smirnov and Y. Soloviev and D. South and V. Spaskov and A. Specka and H. Spitzer and R. Stamen and B. Stella and J. Stiewe and I. Strauch and U. Straumann and V. Tchoulakov and G. Thompson and Thompson, {P. D.} and F. Tomasz and D. Traynor and P. Tru{\"o}l and G. Tsipolitis and I. Tsurin and J. Turnau and E. Tzamariudaki and A. Uraev and M. Urban and A. Usik and D. Utkin and S. Valk{\'a}r and A. Valk{\'a}rov{\'a} and C. Vall{\'e}e and {Van Mechelen}, P. and {Van Remortel}, N. and {Vargas Trevino}, A. and Y. Vazdik and C. Veelken and A. Vest and S. Vinokurova and V. Volchinski and K. Wacker and J. Wagner and G. Weber and R. Weber and D. Wegener and C. Werner and N. Werner and M. Wessels and B. Wessling and Winter, {G. G.} and Ch Wissing and Woehrling, {E. E.} and R. Wolf and E. W{\"u}nsch and S. Xella and W. Yan and V. Yeganov and J. {\v Z}{\'a}{\v c}ek and J. Z{\'a}le{\v s}{\'a}k and Z. Zhang and A. Zhelezov and A. Zhokin and H. Zohrabyan and F. Zomer",

year = "2005",

month = jun,

day = "9",

doi = "10.1016/j.physletb.2005.04.038",

language = "English",

volume = "616",

pages = "31--42",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Search for light gravitinos in events with photons and missing transverse momentum at HERA

AU - Aktas, A.

AU - Andreev, V.

AU - Anthonis, T.

AU - Asmone, A.

AU - Babaev, A.

AU - Backovic, S.

AU - Bähr, J.

AU - Baranov, P.

AU - Barrelet, E.

AU - Bartel, W.

AU - Baumgartner, S.

AU - Becker, J.

AU - Beckingham, M.

AU - Behnke, O.

AU - Behrendt, O.

AU - Belousov, A.

AU - Berger, Ch

AU - Berger, N.

AU - Berndt, T.

AU - Bizot, J. C.

AU - Böhme, J.

AU - Boenig, M. O.

AU - Boudry, V.

AU - Bracinik, J.

AU - Brisson, V.

AU - Bröker, H. B.

AU - Brown, D. P.

AU - Bruncko, D.

AU - Büsser, F. W.

AU - Bunyatyan, A.

AU - Buschhorn, G.

AU - Bystritskaya, L.

AU - Campbell, A. J.

AU - Caron, S.

AU - Cassol-Brunner, F.

AU - Cerny, K.

AU - Chekelian, V.

AU - Contreras, J. G.

AU - Coppens, Y. R.

AU - Coughlan, J. A.

AU - Cox, B. E.

AU - Cozzika, G.

AU - Cvach, J.

AU - Dainton, J. B.

AU - Dau, W. D.

AU - Daum, K.

AU - Delcourt, B.

AU - Demirchyan, R.

AU - De Roeck, A.

AU - Desch, K.

AU - De Wolf, E. A.

AU - Diaconu, C.

AU - Dingfelder, J.

AU - Dodonov, V.

AU - Dubak, A.

AU - Duprel, C.

AU - Eckerlin, G.

AU - Efremenko, V.

AU - Egli, S.

AU - Eichler, R.

AU - Eisele, F.

AU - Ellerbrock, M.

AU - Elsen, E.

AU - Erdmann, W.

AU - Faulkner, P. J.W.

AU - Favart, L.

AU - Fedotov, A.

AU - Felst, R.

AU - Ferencei, J.

AU - Fleischer, M.

AU - Fleischmann, P.

AU - Fleming, Y. H.

AU - Flucke, G.

AU - Flügge, G.

AU - Fomenko, A.

AU - Foresti, I.

AU - Formánek, J.

AU - Franke, G.

AU - Frising, G.

AU - Gabathuler, E.

AU - Gabathuler, K.

AU - Garutti, E.

AU - Garvey, J.

AU - Gayler, J.

AU - Gerhards, R.

AU - Gerlich, C.

AU - Ghazaryan, S.

AU - Ginzburgskaya, S.

AU - Goerlich, L.

AU - Gogitidze, N.

AU - Gorbounov, S.

AU - Grab, C.

AU - Grässler, H.

AU - Greenshaw, T.

AU - Gregori, M.

AU - Grindhammer, G.

AU - Gwilliam, C.

AU - Haidt, D.

AU - Hajduk, L.

AU - Haller, J.

AU - Hansson, M.

AU - Heinzelmann, G.

AU - Henderson, R. C.W.

AU - Henschel, H.

AU - Henshaw, O.

AU - Herrera, G.

AU - Herynek, I.

AU - Heuer, R. D.

AU - Hildebrandt, M.

AU - Hiller, K. H.

AU - Höting, P.

AU - Hoffmann, D.

AU - Horisberger, R.

AU - Hovhannisyan, A.

AU - Ibbotson, M.

AU - Ismail, M.

AU - Jacquet, M.

AU - Janauschek, L.

AU - Janssen, X.

AU - Jemanov, V.

AU - Jönsson, L.

AU - Johnson, D. P.

AU - Jung, H.

AU - Kant, D.

AU - Kapichine, M.

AU - Karlsson, M.

AU - Katzy, J.

AU - Keller, N.

AU - Kenyon, I. R.

AU - Kiesling, C.

AU - Klein, M.

AU - Kleinwort, C.

AU - Klimkovich, T.

AU - Kluge, T.

AU - Knies, G.

AU - Knutsson, A.

AU - Koblitz, B.

AU - Korbel, V.

AU - Kostka, P.

AU - Koutouev, R.

AU - Kropivnitskaya, A.

AU - Kroseberg, J.

AU - Krüger, K.

AU - Kückens, J.

AU - Landon, M. P.J.

AU - Lange, W.

AU - Laštovička, T.

AU - Laycock, P.

AU - Lebedev, A.

AU - Leißner, B.

AU - Lemrani, R.

AU - Lendermann, V.

AU - Levonian, S.

AU - Lindfeld, L.

AU - Lipka, K.

AU - List, B.

AU - Lobodzinska, E.

AU - Loktionova, N.

AU - Lopez-Fernandez, R.

AU - Lubimov, V.

AU - Lueders, H.

AU - Lüke, D.

AU - Lux, T.

AU - Lytkin, L.

AU - Makankine, A.

AU - Malden, N.

AU - Malinovski, E.

AU - Mangano, S.

AU - Marage, P.

AU - Marks, J.

AU - Marshall, R.

AU - Martisikova, M.

AU - Martyn, H. U.

AU - Maxfield, S. J.

AU - Meer, D.

AU - Mehta, A.

AU - Meier, K.

AU - Meyer, A. B.

AU - Meyer, H.

AU - Meyer, J.

AU - Mikocki, S.

AU - Milcewicz-Mika, I.

AU - Milstead, D.

AU - Mohamed, A.

AU - Moreau, F.

AU - Morozov, A.

AU - Morris, J. V.

AU - Mozer, M. U.

AU - Müller, K.

AU - Murín, P.

AU - Nagovizin, V.

AU - Nankov, K.

AU - Naroska, B.

AU - Naumann, J.

AU - Naumann, Th

AU - Newman, P. R.

AU - Niebuhr, C.

AU - Nikiforov, A.

AU - Nikitin, D.

AU - Nowak, G.

AU - Nozicka, M.

AU - Oganezov, R.

AU - Olivier, B.

AU - Olsson, J. E.

AU - Ozerov, D.

AU - Paramonov, A.

AU - Pascaud, C.

AU - Patel, G. D.

AU - Peez, M.

AU - Perez, E.

AU - Perieanu, A.

AU - Petrukhin, A.

AU - Pitzl, D.

AU - Plačakyte, R.

AU - Pöschl, R.

AU - Portheault, B.

AU - Povh, B.

AU - Raicevic, N.

AU - Reimer, P.

AU - Reisert, B.

AU - Rimmer, A.

AU - Risler, C.

AU - Rizvi, E.

AU - Robmann, P.

AU - Roland, B.

AU - Roosen, R.

AU - Rostovtsev, A.

AU - Rurikova, Z.

AU - Rusakov, S.

AU - Rybicki, K.

AU - Sankey, D. P.C.

AU - Sauvan, E.

AU - Schätzel, S.

AU - Scheins, J.

AU - Schilling, F. P.

AU - Schleper, P.

AU - Schmidt, S.

AU - Schmitt, S.

AU - Schneider, M.

AU - Schoeffel, L.

AU - Schöning, A.

AU - Schröder, V.

AU - Schultz-Coulon, H. C.

AU - Schwanenberger, C.

AU - Sedlák, K.

AU - Sefkow, F.

AU - Sheviakov, I.

AU - Shtarkov, L. N.

AU - Sirois, Y.

AU - Sloan, T.

AU - Smirnov, P.

AU - Soloviev, Y.

AU - South, D.

AU - Spaskov, V.

AU - Specka, A.

AU - Spitzer, H.

AU - Stamen, R.

AU - Stella, B.

AU - Stiewe, J.

AU - Strauch, I.

AU - Straumann, U.

AU - Tchoulakov, V.

AU - Thompson, G.

AU - Thompson, P. D.

AU - Tomasz, F.

AU - Traynor, D.

AU - Truöl, P.

AU - Tsipolitis, G.

AU - Tsurin, I.

AU - Turnau, J.

AU - Tzamariudaki, E.

AU - Uraev, A.

AU - Urban, M.

AU - Usik, A.

AU - Utkin, D.

AU - Valkár, S.

AU - Valkárová, A.

AU - Vallée, C.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Vargas Trevino, A.

AU - Vazdik, Y.

AU - Veelken, C.

AU - Vest, A.

AU - Vinokurova, S.

AU - Volchinski, V.

AU - Wacker, K.

AU - Wagner, J.

AU - Weber, G.

AU - Weber, R.

AU - Wegener, D.

AU - Werner, C.

AU - Werner, N.

AU - Wessels, M.

AU - Wessling, B.

AU - Winter, G. G.

AU - Wissing, Ch

AU - Woehrling, E. E.

AU - Wolf, R.

AU - Wünsch, E.

AU - Xella, S.

AU - Yan, W.

AU - Yeganov, V.

AU - Žáček, J.

AU - Zálešák, J.

AU - Zhang, Z.

AU - Zhelezov, A.

AU - Zhokin, A.

AU - Zohrabyan, H.

AU - Zomer, F.

PY - 2005/6/9

Y1 - 2005/6/9

N2 - A search for gravitinos produced in e±p collisions is performed using the H1 detector at HERA. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb -1 for e+p collisions and 13.5 pb-1 for e -p collisions. If R-parity is not conserved, the t-channel exchange of a selectron can produce a neutralino, which, in models where the gravitino is the lightest supersymmetric particle, subsequently decays into a photon and a light gravitino. The resulting event signature, which involves an isolated photon, a jet and missing transverse energy, is analysed for the first time at HERA. No deviation from the Standard Model is found. Exclusion limits on the cross section and on R-parity-violating Yukawa couplings are derived in a Gauge Mediated Supersymmetry Breaking scenario. The results are independent of the squark sector. Neutralinos and supersymmetric partners of the left-handed electron with masses up to 112 GeV and 164 GeV, respectively, can be ruled out at the 95% confidence level for R-parity-violating couplings λ′ equal to 1, in some parts of the parameter space of the considered model.

AB - A search for gravitinos produced in e±p collisions is performed using the H1 detector at HERA. The data were taken at a centre-of-mass energy of 319 GeV and correspond to an integrated luminosity of 64.3 pb -1 for e+p collisions and 13.5 pb-1 for e -p collisions. If R-parity is not conserved, the t-channel exchange of a selectron can produce a neutralino, which, in models where the gravitino is the lightest supersymmetric particle, subsequently decays into a photon and a light gravitino. The resulting event signature, which involves an isolated photon, a jet and missing transverse energy, is analysed for the first time at HERA. No deviation from the Standard Model is found. Exclusion limits on the cross section and on R-parity-violating Yukawa couplings are derived in a Gauge Mediated Supersymmetry Breaking scenario. The results are independent of the squark sector. Neutralinos and supersymmetric partners of the left-handed electron with masses up to 112 GeV and 164 GeV, respectively, can be ruled out at the 95% confidence level for R-parity-violating couplings λ′ equal to 1, in some parts of the parameter space of the considered model.

UR - http://www.scopus.com/inward/record.url?scp=21144432523&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=21144432523&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2005.04.038

DO - 10.1016/j.physletb.2005.04.038

M3 - Article

AN - SCOPUS:21144432523

SN - 0370-2693

VL - 616

SP - 31

EP - 42

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 - 1-2

ER -

Search for light gravitinos in events with photons and missing transverse momentum at HERA

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