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Title: First observation of γγ-> p$$\bar{p}$$K +K - and search for exotic baryons in pK systems

Abstract

The process γγ→p$$\bar{p}$$K +K - and its intermediate processes are measured for the first time using a 980 fb -1 data sample collected with the Belle detector at the KEKB asymmetric-energy e +e - collider. The production of p$$\bar{p}$$K +K - and a Λ(1520) 0 ($$\bar{Λ}$$(1520) 0) signal in the pK - ($$\bar{p}$$K +) invariant mass spectrum are clearly observed. However, no evidence for an exotic baryon near 1540 MeV/c 2, denoted as Θ(1540) 0 ($$\bar{Θ}$$(1540) 0) or Θ(1540) ++ (Θ(1540) --), is seen in the pK - ($$\bar{p}$$K+) or pK+ ($$\bar{p}$$K -) invariant mass spectra. Cross sections for γγ→p$$\bar{p}$$K +K -, Λ(1520) 0$$\bar{p}$$K ++c.c. and the products σ(γγ→Θ(1540)0$$\bar{p}$$K ++c.c.)B(Θ(1540) 0→pK -) and σ(γγ→Θ(1540) ++$$\bar{p}$$K -+c.c.)B(Θ(1540) ++→pK +) are measured. We also determine upper limits on the products of the χ c0 and χ c2 two-photon decay widths and their branching fractions to p$$\bar{p}$$K +K - at the 90% credibility level.

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1298390
Report Number(s):
PNNL-SA-120220
Journal ID: ISSN 2470-0010; 45392; KA2201020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Belle II; Belle Collaboration; Environmental Molecular Sciences Laboratory

Citation Formats

Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Asner, David M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Barberio, E., Behera, P., Bhardwaj, V., Bhuyan, B., Biswal, J., Bobrov, A., Bonvicini, Giovanni, Bozek, A., Bracko, Marko, Browder, Thomas E., Cervenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S-K., Choi, Y., Cinabro, David A., Dalseno, J., Danilov, M., Dash, N., Dolezal, Z., Drasal, Z., Dutta, D., Eidelman, S., Fang, Wenzheng, Fast, James E., Ferber, T., Fulsom, Bryan G., Gaur, Vipin, Gabyshev, N., Garmash, A., Gillard, R., Glattauer, R., Goldenzweig, P., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., Hou, W. S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, Igal, Jeon, H. B., Joo, K. K., Julius, T., Kang, K. H., Kato, E., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kim, Y. J., Kodys, P., Korpar, S., Kotchetkov, Dmitri V., Krizan, P., Krokovny, Pavel, Kuzmin, A., Kwon, Y. J., Lange, J. S., Li, C. H., Li, H., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, Subhashree, Moll, A., Moon, H K., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K., Natkaniec, Z., Nishida, S., Ogawa, S., Olsen, Stephen L., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, Bilas K., Park, C. S., Park, H., Pesantez, L., Pestotnik, R., Petric, M., Piilonen, Leo E., Pulvermacher, C., Rauch, J., Ritter, M., Sakai, Y., Sandilya, Saurabh, Santelj, L., Sanuki, T., Savinov, Vladimir, Schluter, T., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Semmler, D., Senyo, K., Seong, Ilsoo, Sevior, ME, Shibata, T. A., Shiu, Jing-Ge, Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Stanic, S., Staric, M., Strube, Jan F., Stypula, J., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, Umberto, Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Hulse, C., Varner, G., Wang, C. H., Wang, M. Z., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yamaoka, Jared AK, Yelton, John, Yook, Youngmin, Yusa, Y., Zhang, C. C., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A. First observation of γγ-> p$\bar{p}$K+K- and search for exotic baryons in pK systems. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.112017.
Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Asner, David M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Barberio, E., Behera, P., Bhardwaj, V., Bhuyan, B., Biswal, J., Bobrov, A., Bonvicini, Giovanni, Bozek, A., Bracko, Marko, Browder, Thomas E., Cervenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S-K., Choi, Y., Cinabro, David A., Dalseno, J., Danilov, M., Dash, N., Dolezal, Z., Drasal, Z., Dutta, D., Eidelman, S., Fang, Wenzheng, Fast, James E., Ferber, T., Fulsom, Bryan G., Gaur, Vipin, Gabyshev, N., Garmash, A., Gillard, R., Glattauer, R., Goldenzweig, P., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., Hou, W. S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, Igal, Jeon, H. B., Joo, K. K., Julius, T., Kang, K. H., Kato, E., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kim, Y. J., Kodys, P., Korpar, S., Kotchetkov, Dmitri V., Krizan, P., Krokovny, Pavel, Kuzmin, A., Kwon, Y. J., Lange, J. S., Li, C. H., Li, H., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, Subhashree, Moll, A., Moon, H K., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K., Natkaniec, Z., Nishida, S., Ogawa, S., Olsen, Stephen L., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, Bilas K., Park, C. S., Park, H., Pesantez, L., Pestotnik, R., Petric, M., Piilonen, Leo E., Pulvermacher, C., Rauch, J., Ritter, M., Sakai, Y., Sandilya, Saurabh, Santelj, L., Sanuki, T., Savinov, Vladimir, Schluter, T., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Semmler, D., Senyo, K., Seong, Ilsoo, Sevior, ME, Shibata, T. A., Shiu, Jing-Ge, Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Stanic, S., Staric, M., Strube, Jan F., Stypula, J., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, Umberto, Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Hulse, C., Varner, G., Wang, C. H., Wang, M. Z., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yamaoka, Jared AK, Yelton, John, Yook, Youngmin, Yusa, Y., Zhang, C. C., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., & Zupanc, A. First observation of γγ-> p$\bar{p}$K+K- and search for exotic baryons in pK systems. United States. doi:10.1103/PhysRevD.93.112017.
Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Asner, David M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Barberio, E., Behera, P., Bhardwaj, V., Bhuyan, B., Biswal, J., Bobrov, A., Bonvicini, Giovanni, Bozek, A., Bracko, Marko, Browder, Thomas E., Cervenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S-K., Choi, Y., Cinabro, David A., Dalseno, J., Danilov, M., Dash, N., Dolezal, Z., Drasal, Z., Dutta, D., Eidelman, S., Fang, Wenzheng, Fast, James E., Ferber, T., Fulsom, Bryan G., Gaur, Vipin, Gabyshev, N., Garmash, A., Gillard, R., Glattauer, R., Goldenzweig, P., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., Hou, W. S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, Igal, Jeon, H. B., Joo, K. K., Julius, T., Kang, K. H., Kato, E., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kim, Y. J., Kodys, P., Korpar, S., Kotchetkov, Dmitri V., Krizan, P., Krokovny, Pavel, Kuzmin, A., Kwon, Y. J., Lange, J. S., Li, C. H., Li, H., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, Subhashree, Moll, A., Moon, H K., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K., Natkaniec, Z., Nishida, S., Ogawa, S., Olsen, Stephen L., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, Bilas K., Park, C. S., Park, H., Pesantez, L., Pestotnik, R., Petric, M., Piilonen, Leo E., Pulvermacher, C., Rauch, J., Ritter, M., Sakai, Y., Sandilya, Saurabh, Santelj, L., Sanuki, T., Savinov, Vladimir, Schluter, T., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Semmler, D., Senyo, K., Seong, Ilsoo, Sevior, ME, Shibata, T. A., Shiu, Jing-Ge, Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Stanic, S., Staric, M., Strube, Jan F., Stypula, J., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, Umberto, Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Hulse, C., Varner, G., Wang, C. H., Wang, M. Z., Wang, P., Watanabe, M., Watanabe, Y., Williams, K. M., Won, E., Yamaoka, Jared AK, Yelton, John, Yook, Youngmin, Yusa, Y., Zhang, C. C., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A. Thu . "First observation of γγ-> p$\bar{p}$K+K- and search for exotic baryons in pK systems". United States. doi:10.1103/PhysRevD.93.112017.
@article{osti_1298390,
title = {First observation of γγ-> p$\bar{p}$K+K- and search for exotic baryons in pK systems},
author = {Shen, C. P. and Yuan, C. Z. and Adachi, I. and Aihara, H. and Asner, David M. and Aulchenko, V. and Aushev, T. and Ayad, R. and Babu, V. and Badhrees, I. and Bakich, A. M. and Barberio, E. and Behera, P. and Bhardwaj, V. and Bhuyan, B. and Biswal, J. and Bobrov, A. and Bonvicini, Giovanni and Bozek, A. and Bracko, Marko and Browder, Thomas E. and Cervenkov, D. and Chang, P. and Chekelian, V. and Chen, A. and Cheon, B. G. and Chilikin, K. and Chistov, R. and Cho, K. and Chobanova, V. and Choi, S-K. and Choi, Y. and Cinabro, David A. and Dalseno, J. and Danilov, M. and Dash, N. and Dolezal, Z. and Drasal, Z. and Dutta, D. and Eidelman, S. and Fang, Wenzheng and Fast, James E. and Ferber, T. and Fulsom, Bryan G. and Gaur, Vipin and Gabyshev, N. and Garmash, A. and Gillard, R. and Glattauer, R. and Goldenzweig, P. and Grzymkowska, O. and Haba, J. and Hayasaka, K. and Hayashii, H. and Hou, W. S. and Iijima, T. and Inami, K. and Inguglia, G. and Ishikawa, A. and Itoh, R. and Iwasaki, Y. and Jaegle, Igal and Jeon, H. B. and Joo, K. K. and Julius, T. and Kang, K. H. and Kato, E. and Kiesling, C. and Kim, D. Y. and Kim, J. B. and Kim, K. T. and Kim, S. H. and Kim, Y. J. and Kodys, P. and Korpar, S. and Kotchetkov, Dmitri V. and Krizan, P. and Krokovny, Pavel and Kuzmin, A. and Kwon, Y. J. and Lange, J. S. and Li, C. H. and Li, H. and Li, Y. and Li Gioi, L. and Libby, J. and Liventsev, D. and Lubej, M. and Luo, T. and Masuda, M. and Matsuda, T. and Matvienko, D. and Miyabayashi, K. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Mohanty, Subhashree and Moll, A. and Moon, H K. and Mussa, R. and Nakano, E. and Nakao, M. and Nanut, T. and Nath, K. and Natkaniec, Z. and Nishida, S. and Ogawa, S. and Olsen, Stephen L. and Ostrowicz, W. and Pakhlov, P. and Pakhlova, G. and Pal, Bilas K. and Park, C. S. and Park, H. and Pesantez, L. and Pestotnik, R. and Petric, M. and Piilonen, Leo E. and Pulvermacher, C. and Rauch, J. and Ritter, M. and Sakai, Y. and Sandilya, Saurabh and Santelj, L. and Sanuki, T. and Savinov, Vladimir and Schluter, T. and Schneider, O. and Schnell, G. and Schwanda, C. and Seino, Y. and Semmler, D. and Senyo, K. and Seong, Ilsoo and Sevior, ME and Shibata, T. A. and Shiu, Jing-Ge and Shwartz, B. and Simon, F. and Sokolov, A. and Solovieva, E. and Stanic, S. and Staric, M. and Strube, Jan F. and Stypula, J. and Sumihama, M. and Sumiyoshi, T. and Takizawa, M. and Tamponi, Umberto and Tanida, K. and Tenchini, F. and Trabelsi, K. and Uchida, M. and Uehara, S. and Uglov, T. and Unno, Y. and Uno, S. and Urquijo, P. and Usov, Y. and Van Hulse, C. and Varner, G. and Wang, C. H. and Wang, M. Z. and Wang, P. and Watanabe, M. and Watanabe, Y. and Williams, K. M. and Won, E. and Yamaoka, Jared AK and Yelton, John and Yook, Youngmin and Yusa, Y. and Zhang, C. C. and Zhang, Z. P. and Zhilich, V. and Zhukova, V. and Zhulanov, V. and Zupanc, A.},
abstractNote = {The process γγ→p$\bar{p}$K+K- and its intermediate processes are measured for the first time using a 980 fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The production of p$\bar{p}$K+K- and a Λ(1520)0 ($\bar{Λ}$(1520)0) signal in the pK- ($\bar{p}$K+) invariant mass spectrum are clearly observed. However, no evidence for an exotic baryon near 1540 MeV/c2, denoted as Θ(1540)0 ($\bar{Θ}$(1540)0) or Θ(1540)++ (Θ(1540)--), is seen in the pK- ($\bar{p}$K+) or pK+ ($\bar{p}$K-) invariant mass spectra. Cross sections for γγ→p$\bar{p}$K+K-, Λ(1520)0$\bar{p}$K++c.c. and the products σ(γγ→Θ(1540)0$\bar{p}$K++c.c.)B(Θ(1540)0→pK-) and σ(γγ→Θ(1540)++$\bar{p}$K-+c.c.)B(Θ(1540)++→pK+) are measured. We also determine upper limits on the products of the χc0 and χc2 two-photon decay widths and their branching fractions to p$\bar{p}$K+K- at the 90% credibility level.},
doi = {10.1103/PhysRevD.93.112017},
journal = {Physical Review D},
issn = {2470-0010},
number = 11,
volume = 93,
place = {United States},
year = {2016},
month = {6}
}

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