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Title: Azimuthal asymmetries of back-to-back π ± - ( π 0 , η , π ± ) pairs in e + e - annihilation

Abstract

This work reports the first observation of azimuthal asymmetries around the thrust axis in e +e annihilation of pairs of back-to-back charged pions in one hemisphere, and π 0 and η mesons in the opposite hemisphere. These results are complemented by a new analysis of pairs of back-to-back charged pions. The π 0 and η asymmetries rise with the relative momentum z of the detected hadrons as well as with the transverse momentum with respect to the thrust axis. These asymmetries are sensitive to the Collins fragmentation function $H$ $$^{1}_{⊥}$$ and provide complementary information to previous measurements with charged pions and kaons in the final state. In particular, the η final states will provide additional information on the flavor structure of $H$ $$^{1}_{⊥}$$. This is the first measurement of the explicit transverse-momentum dependence of the Collins fragmentation function from Belle data. It uses a dataset of 980.4 fb –1 collected by the Belle experiment at or near a center- of-mass energy of 10.58 GeV.

Authors:
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Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); KEK, High Energy Accelerator Research Organization; Ministry of Education, Culture, Sports, Science and Technology
Contributing Org.:
Belle Collaboration
OSTI Identifier:
1575962
Alternate Identifier(s):
OSTI ID: 1580231
Report Number(s):
BNL-212459-2019-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ
Grant/Contract Number:  
SC0012704; DP180102629; DP170102389; DP170102204; DP150103061; FT130100303; 11435013; 11475187; 11521505; 11575017; 11675166; 11705209; LTT17020
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 100; Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Li, H., Vossen, A., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bračko, M., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Capua, F., Di Carlo, S., Dong, T. V., Eidelman, S., Ferber, T., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Hartbrich, O., Hayasaka, K., Hayashii, H., Huang, K., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Kang, K. H., Karyan, G., Kim, D. Y., Kim, S. H., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kwon, Y. -J., Lee, S. C., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mussa, R., Nakano, T., Nakao, M., Naruki, M., Nath, K. J., Natkaniec, Z., Nishida, S., Ono, H., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M. T., Russo, G., Sahoo, D., Sakai, Y., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seidl, R., Seino, Y., Senyo, K., Shiu, J. -G., Simon, F., Solovieva, E., Starič, M., Stottler, Z. S., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Won, E., Yang, S. B., Ye, H., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V. Azimuthal asymmetries of back-to-back π±-(π0, η, π±) pairs in e+e- annihilation. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.092008.
Li, H., Vossen, A., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bračko, M., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Capua, F., Di Carlo, S., Dong, T. V., Eidelman, S., Ferber, T., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Hartbrich, O., Hayasaka, K., Hayashii, H., Huang, K., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Kang, K. H., Karyan, G., Kim, D. Y., Kim, S. H., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kwon, Y. -J., Lee, S. C., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mussa, R., Nakano, T., Nakao, M., Naruki, M., Nath, K. J., Natkaniec, Z., Nishida, S., Ono, H., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M. T., Russo, G., Sahoo, D., Sakai, Y., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seidl, R., Seino, Y., Senyo, K., Shiu, J. -G., Simon, F., Solovieva, E., Starič, M., Stottler, Z. S., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Won, E., Yang, S. B., Ye, H., Zhang, Z. P., Zhilich, V., Zhukova, V., & Zhulanov, V. Azimuthal asymmetries of back-to-back π±-(π0, η, π±) pairs in e+e- annihilation. United States. doi:10.1103/PhysRevD.100.092008.
Li, H., Vossen, A., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bračko, M., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Capua, F., Di Carlo, S., Dong, T. V., Eidelman, S., Ferber, T., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Hartbrich, O., Hayasaka, K., Hayashii, H., Huang, K., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Kang, K. H., Karyan, G., Kim, D. Y., Kim, S. H., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kwon, Y. -J., Lee, S. C., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mussa, R., Nakano, T., Nakao, M., Naruki, M., Nath, K. J., Natkaniec, Z., Nishida, S., Ono, H., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M. T., Russo, G., Sahoo, D., Sakai, Y., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seidl, R., Seino, Y., Senyo, K., Shiu, J. -G., Simon, F., Solovieva, E., Starič, M., Stottler, Z. S., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Won, E., Yang, S. B., Ye, H., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V. Wed . "Azimuthal asymmetries of back-to-back π±-(π0, η, π±) pairs in e+e- annihilation". United States. doi:10.1103/PhysRevD.100.092008.
@article{osti_1575962,
title = {Azimuthal asymmetries of back-to-back π±-(π0, η, π±) pairs in e+e- annihilation},
author = {Li, H. and Vossen, A. and Aihara, H. and Asner, D. M. and Aulchenko, V. and Aushev, T. and Babu, V. and Badhrees, I. and Bakich, A. M. and Bennett, J. and Bhardwaj, V. and Bilka, T. and Biswal, J. and Bobrov, A. and Bračko, M. and Campajola, M. and Cao, L. and Červenkov, D. and Chekelian, V. and Chen, A. and Cheon, B. G. and Cho, H. E. and Cho, K. and Choi, Y. and Choudhury, S. and Cinabro, D. and Cunliffe, S. and Di Capua, F. and Di Carlo, S. and Dong, T. V. and Eidelman, S. and Ferber, T. and Fulsom, B. G. and Gaur, V. and Garmash, A. and Giri, A. and Goldenzweig, P. and Hartbrich, O. and Hayasaka, K. and Hayashii, H. and Huang, K. and Inami, K. and Ishikawa, A. and Itoh, R. and Iwasaki, M. and Jacobs, W. W. and Jang, E. -J. and Jia, S. and Jin, Y. and Kang, K. H. and Karyan, G. and Kim, D. Y. and Kim, S. H. and Kodyš, P. and Korpar, S. and Kotchetkov, D. and Križan, P. and Kroeger, R. and Krokovny, P. and Kwon, Y. -J. and Lee, S. C. and Li, Y. B. and Li Gioi, L. and Libby, J. and Lieret, K. and Liventsev, D. and Luo, T. and MacQueen, C. and Masuda, M. and Matsuda, T. and Merola, M. and Miyabayashi, K. and Miyata, H. and Mizuk, R. and Mussa, R. and Nakano, T. and Nakao, M. and Naruki, M. and Nath, K. J. and Natkaniec, Z. and Nishida, S. and Ono, H. and Ostrowicz, W. and Pakhlov, P. and Pakhlova, G. and Pal, B. and Pardi, S. and Patra, S. and Paul, S. and Pedlar, T. K. and Pestotnik, R. and Piilonen, L. E. and Popov, V. and Prencipe, E. and Prim, M. T. and Russo, G. and Sahoo, D. and Sakai, Y. and Santelj, L. and Sanuki, T. and Savinov, V. and Schneider, O. and Schnell, G. and Schueler, J. and Schwanda, C. and Seidl, R. and Seino, Y. and Senyo, K. and Shiu, J. -G. and Simon, F. and Solovieva, E. and Starič, M. and Stottler, Z. S. and Takizawa, M. and Tanida, K. and Tenchini, F. and Uchida, M. and Uglov, T. and Uno, S. and Van Tonder, R. and Varner, G. and Wang, B. and Wang, C. H. and Wang, M. -Z. and Wang, P. and Watanabe, M. and Won, E. and Yang, S. B. and Ye, H. and Zhang, Z. P. and Zhilich, V. and Zhukova, V. and Zhulanov, V.},
abstractNote = {This work reports the first observation of azimuthal asymmetries around the thrust axis in e+e– annihilation of pairs of back-to-back charged pions in one hemisphere, and π0 and η mesons in the opposite hemisphere. These results are complemented by a new analysis of pairs of back-to-back charged pions. The π0 and η asymmetries rise with the relative momentum z of the detected hadrons as well as with the transverse momentum with respect to the thrust axis. These asymmetries are sensitive to the Collins fragmentation function $H$ $^{1}_{⊥}$ and provide complementary information to previous measurements with charged pions and kaons in the final state. In particular, the η final states will provide additional information on the flavor structure of $H$ $^{1}_{⊥}$. This is the first measurement of the explicit transverse-momentum dependence of the Collins fragmentation function from Belle data. It uses a dataset of 980.4 fb–1 collected by the Belle experiment at or near a center- of-mass energy of 10.58 GeV.},
doi = {10.1103/PhysRevD.100.092008},
journal = {Physical Review D},
number = 9,
volume = 100,
place = {United States},
year = {2019},
month = {11}
}

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DOI: 10.1103/PhysRevD.100.092008

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