Buchumschlag

Observation and differential cross section measurement of neutral current DIS events with an empty hemisphere in the Breit frame

Fuente: arXiv

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	The H1 collaboration, Andreev, V., Arratia, M., Baghdasaryan, A., Baty, A., Begzsuren, K., Bolz, A., Boudry, V., Brandt, G., Britzger, D., Buniatyan, A., Bystritskaya, L., Campbell, A. J., Avila, K. B. Cantun, Cerny, K., Chekelian, V., Chen, Z., Contreras, J. G., Cvach, J., Dainton, J. B., Daum, K., Deshpande, A., Diaconu, C., Drees, A., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Hessler, J., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacobs, P. M., Jacquet, M., Janssen, T., Jung, A. W., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Klest, H. T., Kluth, S., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Levonian, S., Li, W., Lin, J., Lipka, K., List, B., List, J., Lobodzinski, B., Long, O. R., Malinovski, E., Martyn, H. -U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mikuni, V. M., Mondal, M. M., Müller, K., Nachman, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Preins, S., Radescu, V., Raicevic, N., Ravdandorj, T., Reichelt, D., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schnell, G., Schoeffel, L., Schöning, A., Schumann, S., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Specka, A., Steder, M., Stella, B., Stöcker, L., Straumann, U., Sun, C., Sykora, T., Thompson, P. D., Acosta, F. Torales, Traynor, D., Tseepeldorj, B., Tu, Z., Tustin, G., Valkárová, A., Vallée, C., Van Mechelen, P., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., Zomer, F.
Format:	Preprint
Veröffentlicht:	2024
Schlagworte:	High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment
Online-Zugang:	Acceder al recurso
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

_version_	1866909275739127808
author	The H1 collaboration Andreev, V. Arratia, M. Baghdasaryan, A. Baty, A. Begzsuren, K. Bolz, A. Boudry, V. Brandt, G. Britzger, D. Buniatyan, A. Bystritskaya, L. Campbell, A. J. Avila, K. B. Cantun Cerny, K. Chekelian, V. Chen, Z. Contreras, J. G. Cvach, J. Dainton, J. B. Daum, K. Deshpande, A. Diaconu, C. Drees, A. Eckerlin, G. Egli, S. Elsen, E. Favart, L. Fedotov, A. Feltesse, J. Fleischer, M. Fomenko, A. Gal, C. Gayler, J. Goerlich, L. Gogitidze, N. Gouzevitch, M. Grab, C. Greenshaw, T. Grindhammer, G. Haidt, D. Henderson, R. C. W. Hessler, J. Hladký, J. Hoffmann, D. Horisberger, R. Hreus, T. Huber, F. Jacobs, P. M. Jacquet, M. Janssen, T. Jung, A. W. Katzy, J. Kiesling, C. Klein, M. Kleinwort, C. Klest, H. T. Kluth, S. Kogler, R. Kostka, P. Kretzschmar, J. Krücker, D. Krüger, K. Landon, M. P. J. Lange, W. Laycock, P. Lee, S. H. Levonian, S. Li, W. Lin, J. Lipka, K. List, B. List, J. Lobodzinski, B. Long, O. R. Malinovski, E. Martyn, H. -U. Maxfield, S. J. Mehta, A. Meyer, A. B. Meyer, J. Mikocki, S. Mikuni, V. M. Mondal, M. M. Müller, K. Nachman, B. Naumann, Th. Newman, P. R. Niebuhr, C. Nowak, G. Olsson, J. E. Ozerov, D. Park, S. Pascaud, C. Patel, G. D. Perez, E. Petrukhin, A. Picuric, I. Pitzl, D. Polifka, R. Preins, S. Radescu, V. Raicevic, N. Ravdandorj, T. Reichelt, D. Reimer, P. Rizvi, E. Robmann, P. Roosen, R. Rostovtsev, A. Rotaru, M. Sankey, D. P. C. Sauter, M. Sauvan, E. Schmitt, S. Schmookler, B. A. Schnell, G. Schoeffel, L. Schöning, A. Schumann, S. Sefkow, F. Shushkevich, S. Soloviev, Y. Sopicki, P. South, D. Specka, A. Steder, M. Stella, B. Stöcker, L. Straumann, U. Sun, C. Sykora, T. Thompson, P. D. Acosta, F. Torales Traynor, D. Tseepeldorj, B. Tu, Z. Tustin, G. Valkárová, A. Vallée, C. Van Mechelen, P. Wegener, D. Wünsch, E. Žáček, J. Zhang, J. Zhang, Z. Žlebčík, R. Zohrabyan, H. Zomer, F.
author_facet	The H1 collaboration Andreev, V. Arratia, M. Baghdasaryan, A. Baty, A. Begzsuren, K. Bolz, A. Boudry, V. Brandt, G. Britzger, D. Buniatyan, A. Bystritskaya, L. Campbell, A. J. Avila, K. B. Cantun Cerny, K. Chekelian, V. Chen, Z. Contreras, J. G. Cvach, J. Dainton, J. B. Daum, K. Deshpande, A. Diaconu, C. Drees, A. Eckerlin, G. Egli, S. Elsen, E. Favart, L. Fedotov, A. Feltesse, J. Fleischer, M. Fomenko, A. Gal, C. Gayler, J. Goerlich, L. Gogitidze, N. Gouzevitch, M. Grab, C. Greenshaw, T. Grindhammer, G. Haidt, D. Henderson, R. C. W. Hessler, J. Hladký, J. Hoffmann, D. Horisberger, R. Hreus, T. Huber, F. Jacobs, P. M. Jacquet, M. Janssen, T. Jung, A. W. Katzy, J. Kiesling, C. Klein, M. Kleinwort, C. Klest, H. T. Kluth, S. Kogler, R. Kostka, P. Kretzschmar, J. Krücker, D. Krüger, K. Landon, M. P. J. Lange, W. Laycock, P. Lee, S. H. Levonian, S. Li, W. Lin, J. Lipka, K. List, B. List, J. Lobodzinski, B. Long, O. R. Malinovski, E. Martyn, H. -U. Maxfield, S. J. Mehta, A. Meyer, A. B. Meyer, J. Mikocki, S. Mikuni, V. M. Mondal, M. M. Müller, K. Nachman, B. Naumann, Th. Newman, P. R. Niebuhr, C. Nowak, G. Olsson, J. E. Ozerov, D. Park, S. Pascaud, C. Patel, G. D. Perez, E. Petrukhin, A. Picuric, I. Pitzl, D. Polifka, R. Preins, S. Radescu, V. Raicevic, N. Ravdandorj, T. Reichelt, D. Reimer, P. Rizvi, E. Robmann, P. Roosen, R. Rostovtsev, A. Rotaru, M. Sankey, D. P. C. Sauter, M. Sauvan, E. Schmitt, S. Schmookler, B. A. Schnell, G. Schoeffel, L. Schöning, A. Schumann, S. Sefkow, F. Shushkevich, S. Soloviev, Y. Sopicki, P. South, D. Specka, A. Steder, M. Stella, B. Stöcker, L. Straumann, U. Sun, C. Sykora, T. Thompson, P. D. Acosta, F. Torales Traynor, D. Tseepeldorj, B. Tu, Z. Tustin, G. Valkárová, A. Vallée, C. Van Mechelen, P. Wegener, D. Wünsch, E. Žáček, J. Zhang, J. Zhang, Z. Žlebčík, R. Zohrabyan, H. Zomer, F.
contents	The Breit frame provides a natural frame to analyze lepton-proton scattering events. In this reference frame, the parton model hard interactions between a quark and an exchanged boson defines the coordinate system such that the struck quark is back-scattered along the virtual photon momentum direction. In Quantum Chromodynamics (QCD), higher order perturbative or non-perturbative effects can change this picture drastically. As Bjorken-$x$ decreases below one half, a rather peculiar event signature is predicted with increasing probability, where no radiation is present in one of the two Breit-frame hemispheres and all emissions are to be found in the other hemisphere. At higher orders in $α_s$ or in the presence of soft QCD effects, predictions of the rate of these events are far from trivial, and that motivates measurements with real data. We report on the first observation of the empty current hemisphere events in electron-proton collisions at the HERA collider using data recorded with the H1 detector at a center-of-mass energy of 319 GeV. The fraction of inclusive neutral-current DIS events with an empty hemisphere is found to be $0.0112 \pm 3.9\,\%_\text{stat} \pm 4.5\,\%_\text{syst} \pm 1.6\,\%_\text{mod}$ in the selected kinematic region of $150< Q^2<1500$ GeV$^2$ and inelasticity $0.14< y<0.7$. The data sample corresponds to an integrated luminosity of 351.1 pb$^{-1}$, sufficient to enable differential cross section measurements of these events. The results show an enhanced discriminating power at lower Bjorken-$x$ among different Monte Carlo event generator predictions.
format	Preprint
id	arxiv_https___arxiv_org_abs_2403_08982
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Observation and differential cross section measurement of neutral current DIS events with an empty hemisphere in the Breit frame The H1 collaboration Andreev, V. Arratia, M. Baghdasaryan, A. Baty, A. Begzsuren, K. Bolz, A. Boudry, V. Brandt, G. Britzger, D. Buniatyan, A. Bystritskaya, L. Campbell, A. J. Avila, K. B. Cantun Cerny, K. Chekelian, V. Chen, Z. Contreras, J. G. Cvach, J. Dainton, J. B. Daum, K. Deshpande, A. Diaconu, C. Drees, A. Eckerlin, G. Egli, S. Elsen, E. Favart, L. Fedotov, A. Feltesse, J. Fleischer, M. Fomenko, A. Gal, C. Gayler, J. Goerlich, L. Gogitidze, N. Gouzevitch, M. Grab, C. Greenshaw, T. Grindhammer, G. Haidt, D. Henderson, R. C. W. Hessler, J. Hladký, J. Hoffmann, D. Horisberger, R. Hreus, T. Huber, F. Jacobs, P. M. Jacquet, M. Janssen, T. Jung, A. W. Katzy, J. Kiesling, C. Klein, M. Kleinwort, C. Klest, H. T. Kluth, S. Kogler, R. Kostka, P. Kretzschmar, J. Krücker, D. Krüger, K. Landon, M. P. J. Lange, W. Laycock, P. Lee, S. H. Levonian, S. Li, W. Lin, J. Lipka, K. List, B. List, J. Lobodzinski, B. Long, O. R. Malinovski, E. Martyn, H. -U. Maxfield, S. J. Mehta, A. Meyer, A. B. Meyer, J. Mikocki, S. Mikuni, V. M. Mondal, M. M. Müller, K. Nachman, B. Naumann, Th. Newman, P. R. Niebuhr, C. Nowak, G. Olsson, J. E. Ozerov, D. Park, S. Pascaud, C. Patel, G. D. Perez, E. Petrukhin, A. Picuric, I. Pitzl, D. Polifka, R. Preins, S. Radescu, V. Raicevic, N. Ravdandorj, T. Reichelt, D. Reimer, P. Rizvi, E. Robmann, P. Roosen, R. Rostovtsev, A. Rotaru, M. Sankey, D. P. C. Sauter, M. Sauvan, E. Schmitt, S. Schmookler, B. A. Schnell, G. Schoeffel, L. Schöning, A. Schumann, S. Sefkow, F. Shushkevich, S. Soloviev, Y. Sopicki, P. South, D. Specka, A. Steder, M. Stella, B. Stöcker, L. Straumann, U. Sun, C. Sykora, T. Thompson, P. D. Acosta, F. Torales Traynor, D. Tseepeldorj, B. Tu, Z. Tustin, G. Valkárová, A. Vallée, C. Van Mechelen, P. Wegener, D. Wünsch, E. Žáček, J. Zhang, J. Zhang, Z. Žlebčík, R. Zohrabyan, H. Zomer, F. High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment The Breit frame provides a natural frame to analyze lepton-proton scattering events. In this reference frame, the parton model hard interactions between a quark and an exchanged boson defines the coordinate system such that the struck quark is back-scattered along the virtual photon momentum direction. In Quantum Chromodynamics (QCD), higher order perturbative or non-perturbative effects can change this picture drastically. As Bjorken-$x$ decreases below one half, a rather peculiar event signature is predicted with increasing probability, where no radiation is present in one of the two Breit-frame hemispheres and all emissions are to be found in the other hemisphere. At higher orders in $α_s$ or in the presence of soft QCD effects, predictions of the rate of these events are far from trivial, and that motivates measurements with real data. We report on the first observation of the empty current hemisphere events in electron-proton collisions at the HERA collider using data recorded with the H1 detector at a center-of-mass energy of 319 GeV. The fraction of inclusive neutral-current DIS events with an empty hemisphere is found to be $0.0112 \pm 3.9\,\%_\text{stat} \pm 4.5\,\%_\text{syst} \pm 1.6\,\%_\text{mod}$ in the selected kinematic region of $150< Q^2<1500$ GeV$^2$ and inelasticity $0.14< y<0.7$. The data sample corresponds to an integrated luminosity of 351.1 pb$^{-1}$, sufficient to enable differential cross section measurements of these events. The results show an enhanced discriminating power at lower Bjorken-$x$ among different Monte Carlo event generator predictions.
title	Observation and differential cross section measurement of neutral current DIS events with an empty hemisphere in the Breit frame
topic	High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment
url	https://arxiv.org/abs/2403.08982