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Title: Transverse single-spin asymmetry and cross section for π⁰ and η mesons at large Feynman x in p+p collisions at √s=200 GeV

Abstract

Measurements of the differential cross section and the transverse single-spin asymmetry, AN, vs xF for π⁰ and η mesons are reported for 0.4F<0.75 at an average pseudorapidity of 3.68. A data sample of approximately 6.3 pb⁻¹ was analyzed, which was recorded during p+p collisions at √s=200 GeV by the STAR experiment at RHIC. The average transverse beam polarization was 56%. The cross section for π⁰, including the previously unmeasured region of xF>0.55, is consistent with a perturbative QCD prediction, and the η/π⁰ cross-section ratio agrees with existing midrapidity measurements. For 0.55F<0.75, the average AN for η is 0.210±0.056, and that for π⁰ is 0.081±0.016. The probability that these two asymmetries are equal is ~3%.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1103256
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Volume: 86 Journal Issue: 5; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Adamczyk, L., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., Alford, J., Anderson, B. D., Anson, C. D., Arkhipkin, D., Aschenauer, E., Averichev, G. S., Balewski, J., Bannerjee, A., Barnovska, Z., Beavis, D. R., Bellwied, R., Betancourt, M. J., Betts, R. R., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bordyuzhin, I. G., Borowski, W., Bouchet, J., Brandin, A. V., Brovko, S. G., Bruna, E., Bueltmann, S., Bunzarov, I., Burton, T. P., Butterworth, J., Cai, X. Z., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Cendejas, R., Cervantes, M. C., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Chen, L., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Chung, P., Chwastowski, J., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Cui, X., Davila Leyva, A., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derradi de Souza, R., Dhamija, S., Didenko, L., Ding, F., Dion, A., Djawotho, P., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Elnimr, M., Engelage, J., Eppley, G., Eun, L., Evdokimov, O., Fatemi, R., Fazio, S., Fedorisin, J., Fersch, R. G., Filip, P., Finch, E., Fisyak, Y., Gagliardi, C. A., Gangadharan, D. R., Geurts, F., Gliske, S., Gorbunov, Y. N., Grebenyuk, O. G., Grosnick, D., Gupta, S., Guryn, W., Haag, B., Hajkova, O., Hamed, A., Han, L-X., Harris, J. W., Hays-Wehle, J. P., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, H. Z., Huck, P., Humanic, T. J., Huo, L., Igo, G., Jacobs, W. W., Jena, C., Joseph, J., Judd, E. G., Kabana, S., Kang, K., Kapitan, J., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kesich, A., Kettler, D., Kikola, D. P., Kiryluk, J., Kisiel, A., Kizka, V., Klein, S. R., Koetke, D. D., Kollegger, T., Konzer, J., Koralt, I., Koroleva, L., Korsch, W., Kotchenda, L., Kravtsov, P., Krueger, K., Kumar, L., Lamont, M. A. C., Landgraf, J. M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leight, W., LeVine, M. J., Li, C., Li, L., Li, W., Li, X., Li, X., Li, Y., Li, Z. M., Lima, L. M., Lisa, M. A., Liu, F., Ljubicic, T., Llope, W. J., Longacre, R. S., Lu, Y., Luo, X., Luszczak, A., Ma, G. L., Ma, Y. G., Madagodagettige Don, D. M. M. D., Mahapatra, D. P., Majka, R., Mall, O. I., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., McShane, T. S., Mioduszewski, S., Mitrovski, M. K., Mohammed, Y., Mohanty, B., Morozov, B., Munhoz, M. G., Mustafa, M. K., Naglis, M., Nandi, B. K., Nasim, Md., Nayak, T. K., Nogach, L. V., Novak, J., Odyniec, G., Ogawa, A., Oh, K., Ohlson, A., Okorokov, V., Oldag, E. W., Oliveira, R. A. N., Olson, D., Ostrowski, P., Pachr, M., Page, B. S., Pal, S. K., Pan, Y. X., Pandit, Y., Panebratsev, Y., Pawlak, T., Pawlik, B., Pei, H., Perkins, C., Peryt, W., Pile, P., Planinic, M., Pluta, J., Plyku, D., Poljak, N., Porter, J., Poskanzer, A. M., Powell, C. B., Prindle, D., Pruneau, C., Pruthi, N. K., Przybycien, M., Pujahari, P. R., Putschke, J., Qiu, H., Raniwala, R., Raniwala, S., Ray, R. L., Redwine, R., Reed, R., Riley, C. K., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ross, J. F., Ruan, L., Rusnak, J., Sahoo, N. R., Sakrejda, I., Salur, S., Sandacz, A., Sandweiss, J., Sangaline, E., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, B., Schmitz, N., Schuster, T. R., Seele, J., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shao, M., Sharma, B., Sharma, M., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Singaraju, R. N., Skoby, M. J., Smirnov, D., Smirnov, N., Solanki, D., Sorensen, P., deSouza, U. G., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Steadman, S. G., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Sumbera, M., Sun, X. M., Sun, Y., Sun, Z., Surrow, B., Svirida, D. N., Symons, T. J. M., Szanto de Toledo, A., Takahashi, J., Tang, A. H., Tang, Z., Tarini, L. H., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Tlusty, D., Tokarev, M., Trainor, T. A., Trentalange, S., Tribble, R. E., Tribedy, P., Trzeciak, B. A., Tsai, O. D., Turnau, J., Ullrich, T., Underwood, D. G., Van Buren, G., van Nieuwenhuizen, G., Vanfossen, J. A., Varma, R., Vasconcelos, G. M. S., Videbæk, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Vossen, A., Wada, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, Q., Wang, X. L., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Whitten, C., Wieman, H., Wissink, S. W., Witt, R., Witzke, W., Wu, Y. F., Xiao, Z., Xie, W., Xin, K., Xu, H., Xu, N., Xu, Q. H., Xu, W., Xu, Y., Xu, Z., Xue, L., Yang, Y., Yang, Y., Yepes, P., Yi, Y., Yip, K., Yoo, I-K., Zawisza, M., Zbroszczyk, H., Zhang, J. B., Zhang, S., Zhang, W. M., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, F., Zhao, J., Zhong, C., Zhu, X., Zhu, Y. H., and Zoulkarneeva, Y. Transverse single-spin asymmetry and cross section for π⁰ and η mesons at large Feynman x in p↑+p collisions at √s=200 GeV. United States: N. p., 2012. Web. doi:10.1103/PhysRevD.86.051101.
Adamczyk, L., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., Alford, J., Anderson, B. D., Anson, C. D., Arkhipkin, D., Aschenauer, E., Averichev, G. S., Balewski, J., Bannerjee, A., Barnovska, Z., Beavis, D. R., Bellwied, R., Betancourt, M. J., Betts, R. R., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bordyuzhin, I. G., Borowski, W., Bouchet, J., Brandin, A. V., Brovko, S. G., Bruna, E., Bueltmann, S., Bunzarov, I., Burton, T. P., Butterworth, J., Cai, X. Z., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Cendejas, R., Cervantes, M. C., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Chen, L., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Chung, P., Chwastowski, J., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Cui, X., Davila Leyva, A., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derradi de Souza, R., Dhamija, S., Didenko, L., Ding, F., Dion, A., Djawotho, P., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Elnimr, M., Engelage, J., Eppley, G., Eun, L., Evdokimov, O., Fatemi, R., Fazio, S., Fedorisin, J., Fersch, R. G., Filip, P., Finch, E., Fisyak, Y., Gagliardi, C. A., Gangadharan, D. R., Geurts, F., Gliske, S., Gorbunov, Y. N., Grebenyuk, O. G., Grosnick, D., Gupta, S., Guryn, W., Haag, B., Hajkova, O., Hamed, A., Han, L-X., Harris, J. W., Hays-Wehle, J. P., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, H. Z., Huck, P., Humanic, T. J., Huo, L., Igo, G., Jacobs, W. W., Jena, C., Joseph, J., Judd, E. G., Kabana, S., Kang, K., Kapitan, J., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kesich, A., Kettler, D., Kikola, D. P., Kiryluk, J., Kisiel, A., Kizka, V., Klein, S. R., Koetke, D. D., Kollegger, T., Konzer, J., Koralt, I., Koroleva, L., Korsch, W., Kotchenda, L., Kravtsov, P., Krueger, K., Kumar, L., Lamont, M. A. C., Landgraf, J. M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leight, W., LeVine, M. J., Li, C., Li, L., Li, W., Li, X., Li, X., Li, Y., Li, Z. M., Lima, L. M., Lisa, M. A., Liu, F., Ljubicic, T., Llope, W. J., Longacre, R. S., Lu, Y., Luo, X., Luszczak, A., Ma, G. L., Ma, Y. G., Madagodagettige Don, D. M. M. D., Mahapatra, D. P., Majka, R., Mall, O. I., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., McShane, T. S., Mioduszewski, S., Mitrovski, M. K., Mohammed, Y., Mohanty, B., Morozov, B., Munhoz, M. G., Mustafa, M. K., Naglis, M., Nandi, B. K., Nasim, Md., Nayak, T. K., Nogach, L. V., Novak, J., Odyniec, G., Ogawa, A., Oh, K., Ohlson, A., Okorokov, V., Oldag, E. W., Oliveira, R. A. N., Olson, D., Ostrowski, P., Pachr, M., Page, B. S., Pal, S. K., Pan, Y. X., Pandit, Y., Panebratsev, Y., Pawlak, T., Pawlik, B., Pei, H., Perkins, C., Peryt, W., Pile, P., Planinic, M., Pluta, J., Plyku, D., Poljak, N., Porter, J., Poskanzer, A. M., Powell, C. B., Prindle, D., Pruneau, C., Pruthi, N. K., Przybycien, M., Pujahari, P. R., Putschke, J., Qiu, H., Raniwala, R., Raniwala, S., Ray, R. L., Redwine, R., Reed, R., Riley, C. K., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ross, J. F., Ruan, L., Rusnak, J., Sahoo, N. R., Sakrejda, I., Salur, S., Sandacz, A., Sandweiss, J., Sangaline, E., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, B., Schmitz, N., Schuster, T. R., Seele, J., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shao, M., Sharma, B., Sharma, M., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Singaraju, R. N., Skoby, M. J., Smirnov, D., Smirnov, N., Solanki, D., Sorensen, P., deSouza, U. G., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Steadman, S. G., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Sumbera, M., Sun, X. M., Sun, Y., Sun, Z., Surrow, B., Svirida, D. N., Symons, T. J. M., Szanto de Toledo, A., Takahashi, J., Tang, A. H., Tang, Z., Tarini, L. H., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Tlusty, D., Tokarev, M., Trainor, T. A., Trentalange, S., Tribble, R. E., Tribedy, P., Trzeciak, B. A., Tsai, O. D., Turnau, J., Ullrich, T., Underwood, D. G., Van Buren, G., van Nieuwenhuizen, G., Vanfossen, J. A., Varma, R., Vasconcelos, G. M. S., Videbæk, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Vossen, A., Wada, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, Q., Wang, X. L., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Whitten, C., Wieman, H., Wissink, S. W., Witt, R., Witzke, W., Wu, Y. F., Xiao, Z., Xie, W., Xin, K., Xu, H., Xu, N., Xu, Q. H., Xu, W., Xu, Y., Xu, Z., Xue, L., Yang, Y., Yang, Y., Yepes, P., Yi, Y., Yip, K., Yoo, I-K., Zawisza, M., Zbroszczyk, H., Zhang, J. B., Zhang, S., Zhang, W. M., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, F., Zhao, J., Zhong, C., Zhu, X., Zhu, Y. H., & Zoulkarneeva, Y. Transverse single-spin asymmetry and cross section for π⁰ and η mesons at large Feynman x in p↑+p collisions at √s=200 GeV. United States. https://doi.org/10.1103/PhysRevD.86.051101
Adamczyk, L., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., Alford, J., Anderson, B. D., Anson, C. D., Arkhipkin, D., Aschenauer, E., Averichev, G. S., Balewski, J., Bannerjee, A., Barnovska, Z., Beavis, D. R., Bellwied, R., Betancourt, M. J., Betts, R. R., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bordyuzhin, I. G., Borowski, W., Bouchet, J., Brandin, A. V., Brovko, S. G., Bruna, E., Bueltmann, S., Bunzarov, I., Burton, T. P., Butterworth, J., Cai, X. Z., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Cendejas, R., Cervantes, M. C., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Chen, L., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Chung, P., Chwastowski, J., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Cui, X., Davila Leyva, A., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derradi de Souza, R., Dhamija, S., Didenko, L., Ding, F., Dion, A., Djawotho, P., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Elnimr, M., Engelage, J., Eppley, G., Eun, L., Evdokimov, O., Fatemi, R., Fazio, S., Fedorisin, J., Fersch, R. G., Filip, P., Finch, E., Fisyak, Y., Gagliardi, C. A., Gangadharan, D. R., Geurts, F., Gliske, S., Gorbunov, Y. N., Grebenyuk, O. G., Grosnick, D., Gupta, S., Guryn, W., Haag, B., Hajkova, O., Hamed, A., Han, L-X., Harris, J. W., Hays-Wehle, J. P., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, H. Z., Huck, P., Humanic, T. J., Huo, L., Igo, G., Jacobs, W. W., Jena, C., Joseph, J., Judd, E. G., Kabana, S., Kang, K., Kapitan, J., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kesich, A., Kettler, D., Kikola, D. P., Kiryluk, J., Kisiel, A., Kizka, V., Klein, S. R., Koetke, D. D., Kollegger, T., Konzer, J., Koralt, I., Koroleva, L., Korsch, W., Kotchenda, L., Kravtsov, P., Krueger, K., Kumar, L., Lamont, M. A. C., Landgraf, J. M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leight, W., LeVine, M. J., Li, C., Li, L., Li, W., Li, X., Li, X., Li, Y., Li, Z. M., Lima, L. M., Lisa, M. A., Liu, F., Ljubicic, T., Llope, W. J., Longacre, R. S., Lu, Y., Luo, X., Luszczak, A., Ma, G. L., Ma, Y. G., Madagodagettige Don, D. M. M. D., Mahapatra, D. P., Majka, R., Mall, O. I., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., McShane, T. S., Mioduszewski, S., Mitrovski, M. K., Mohammed, Y., Mohanty, B., Morozov, B., Munhoz, M. G., Mustafa, M. K., Naglis, M., Nandi, B. K., Nasim, Md., Nayak, T. K., Nogach, L. V., Novak, J., Odyniec, G., Ogawa, A., Oh, K., Ohlson, A., Okorokov, V., Oldag, E. W., Oliveira, R. A. N., Olson, D., Ostrowski, P., Pachr, M., Page, B. S., Pal, S. K., Pan, Y. X., Pandit, Y., Panebratsev, Y., Pawlak, T., Pawlik, B., Pei, H., Perkins, C., Peryt, W., Pile, P., Planinic, M., Pluta, J., Plyku, D., Poljak, N., Porter, J., Poskanzer, A. M., Powell, C. B., Prindle, D., Pruneau, C., Pruthi, N. K., Przybycien, M., Pujahari, P. R., Putschke, J., Qiu, H., Raniwala, R., Raniwala, S., Ray, R. L., Redwine, R., Reed, R., Riley, C. K., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ross, J. F., Ruan, L., Rusnak, J., Sahoo, N. R., Sakrejda, I., Salur, S., Sandacz, A., Sandweiss, J., Sangaline, E., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, B., Schmitz, N., Schuster, T. R., Seele, J., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shao, M., Sharma, B., Sharma, M., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Singaraju, R. N., Skoby, M. J., Smirnov, D., Smirnov, N., Solanki, D., Sorensen, P., deSouza, U. G., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Steadman, S. G., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Sumbera, M., Sun, X. M., Sun, Y., Sun, Z., Surrow, B., Svirida, D. N., Symons, T. J. M., Szanto de Toledo, A., Takahashi, J., Tang, A. H., Tang, Z., Tarini, L. H., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Tlusty, D., Tokarev, M., Trainor, T. A., Trentalange, S., Tribble, R. E., Tribedy, P., Trzeciak, B. A., Tsai, O. D., Turnau, J., Ullrich, T., Underwood, D. G., Van Buren, G., van Nieuwenhuizen, G., Vanfossen, J. A., Varma, R., Vasconcelos, G. M. S., Videbæk, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Vossen, A., Wada, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, Q., Wang, X. L., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Whitten, C., Wieman, H., Wissink, S. W., Witt, R., Witzke, W., Wu, Y. F., Xiao, Z., Xie, W., Xin, K., Xu, H., Xu, N., Xu, Q. H., Xu, W., Xu, Y., Xu, Z., Xue, L., Yang, Y., Yang, Y., Yepes, P., Yi, Y., Yip, K., Yoo, I-K., Zawisza, M., Zbroszczyk, H., Zhang, J. B., Zhang, S., Zhang, W. M., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, F., Zhao, J., Zhong, C., Zhu, X., Zhu, Y. H., and Zoulkarneeva, Y. Wed . "Transverse single-spin asymmetry and cross section for π⁰ and η mesons at large Feynman x in p↑+p collisions at √s=200 GeV". United States. https://doi.org/10.1103/PhysRevD.86.051101.
@article{osti_1103256,
title = {Transverse single-spin asymmetry and cross section for π⁰ and η mesons at large Feynman x in p↑+p collisions at √s=200 GeV},
author = {Adamczyk, L. and Agakishiev, G. and Aggarwal, M. M. and Ahammed, Z. and Alakhverdyants, A. V. and Alekseev, I. and Alford, J. and Anderson, B. D. and Anson, C. D. and Arkhipkin, D. and Aschenauer, E. and Averichev, G. S. and Balewski, J. and Bannerjee, A. and Barnovska, Z. and Beavis, D. R. and Bellwied, R. and Betancourt, M. J. and Betts, R. R. and Bhasin, A. and Bhati, A. K. and Bichsel, H. and Bielcik, J. and Bielcikova, J. and Bordyuzhin, I. G. and Borowski, W. and Bouchet, J. and Brandin, A. V. and Brovko, S. G. and Bruna, E. and Bueltmann, S. and Bunzarov, I. and Burton, T. P. and Butterworth, J. and Cai, X. Z. and Caines, H. and Calderón de la Barca Sánchez, M. and Cebra, D. and Cendejas, R. and Cervantes, M. C. and Chaloupka, P. and Chattopadhyay, S. and Chen, H. F. and Chen, J. H. and Chen, J. Y. and Chen, L. and Cheng, J. and Cherney, M. and Chikanian, A. and Christie, W. and Chung, P. and Chwastowski, J. and Codrington, M. J. M. and Corliss, R. and Cramer, J. G. and Crawford, H. J. and Cui, X. and Davila Leyva, A. and De Silva, L. C. and Debbe, R. R. and Dedovich, T. G. and Deng, J. and Derradi de Souza, R. and Dhamija, S. and Didenko, L. and Ding, F. and Dion, A. and Djawotho, P. and Dong, X. and Drachenberg, J. L. and Draper, J. E. and Du, C. M. and Dunkelberger, L. E. and Dunlop, J. C. and Efimov, L. G. and Elnimr, M. and Engelage, J. and Eppley, G. and Eun, L. and Evdokimov, O. and Fatemi, R. and Fazio, S. and Fedorisin, J. and Fersch, R. G. and Filip, P. and Finch, E. and Fisyak, Y. and Gagliardi, C. A. and Gangadharan, D. R. and Geurts, F. and Gliske, S. and Gorbunov, Y. N. and Grebenyuk, O. G. and Grosnick, D. and Gupta, S. and Guryn, W. and Haag, B. and Hajkova, O. and Hamed, A. and Han, L-X. and Harris, J. W. and Hays-Wehle, J. P. and Heppelmann, S. and Hirsch, A. and Hoffmann, G. W. and Hofman, D. J. and Horvat, S. and Huang, B. and Huang, H. Z. and Huck, P. and Humanic, T. J. and Huo, L. and Igo, G. and Jacobs, W. W. and Jena, C. and Joseph, J. and Judd, E. G. and Kabana, S. and Kang, K. and Kapitan, J. and Kauder, K. and Ke, H. W. and Keane, D. and Kechechyan, A. and Kesich, A. and Kettler, D. and Kikola, D. P. and Kiryluk, J. and Kisiel, A. and Kizka, V. and Klein, S. R. and Koetke, D. D. and Kollegger, T. and Konzer, J. and Koralt, I. and Koroleva, L. and Korsch, W. and Kotchenda, L. and Kravtsov, P. and Krueger, K. and Kumar, L. and Lamont, M. A. C. and Landgraf, J. M. and LaPointe, S. and Lauret, J. and Lebedev, A. and Lednicky, R. and Lee, J. H. and Leight, W. and LeVine, M. J. and Li, C. and Li, L. and Li, W. and Li, X. and Li, X. and Li, Y. and Li, Z. M. and Lima, L. M. and Lisa, M. A. and Liu, F. and Ljubicic, T. and Llope, W. J. and Longacre, R. S. and Lu, Y. and Luo, X. and Luszczak, A. and Ma, G. L. and Ma, Y. G. and Madagodagettige Don, D. M. M. D. and Mahapatra, D. P. and Majka, R. and Mall, O. I. and Margetis, S. and Markert, C. and Masui, H. and Matis, H. S. and McDonald, D. and McShane, T. S. and Mioduszewski, S. and Mitrovski, M. K. and Mohammed, Y. and Mohanty, B. and Morozov, B. and Munhoz, M. G. and Mustafa, M. K. and Naglis, M. and Nandi, B. K. and Nasim, Md. and Nayak, T. K. and Nogach, L. V. and Novak, J. and Odyniec, G. and Ogawa, A. and Oh, K. and Ohlson, A. and Okorokov, V. and Oldag, E. W. and Oliveira, R. A. N. and Olson, D. and Ostrowski, P. and Pachr, M. and Page, B. S. and Pal, S. K. and Pan, Y. X. and Pandit, Y. and Panebratsev, Y. and Pawlak, T. and Pawlik, B. and Pei, H. and Perkins, C. and Peryt, W. and Pile, P. and Planinic, M. and Pluta, J. and Plyku, D. and Poljak, N. and Porter, J. and Poskanzer, A. M. and Powell, C. B. and Prindle, D. and Pruneau, C. and Pruthi, N. K. and Przybycien, M. and Pujahari, P. R. and Putschke, J. and Qiu, H. and Raniwala, R. and Raniwala, S. and Ray, R. L. and Redwine, R. and Reed, R. and Riley, C. K. and Ritter, H. G. and Roberts, J. B. and Rogachevskiy, O. V. and Romero, J. L. and Ross, J. F. and Ruan, L. and Rusnak, J. and Sahoo, N. R. and Sakrejda, I. and Salur, S. and Sandacz, A. and Sandweiss, J. and Sangaline, E. and Sarkar, A. and Schambach, J. and Scharenberg, R. P. and Schmah, A. M. and Schmidke, B. and Schmitz, N. and Schuster, T. R. and Seele, J. and Seger, J. and Seyboth, P. and Shah, N. and Shahaliev, E. and Shao, M. and Sharma, B. and Sharma, M. and Shi, S. S. and Shou, Q. Y. and Sichtermann, E. P. and Singaraju, R. N. and Skoby, M. J. and Smirnov, D. and Smirnov, N. and Solanki, D. and Sorensen, P. and deSouza, U. G. and Spinka, H. M. and Srivastava, B. and Stanislaus, T. D. S. and Steadman, S. G. and Stevens, J. R. and Stock, R. and Strikhanov, M. and Stringfellow, B. and Suaide, A. A. P. and Suarez, M. C. and Sumbera, M. and Sun, X. M. and Sun, Y. and Sun, Z. and Surrow, B. and Svirida, D. N. and Symons, T. J. M. and Szanto de Toledo, A. and Takahashi, J. and Tang, A. H. and Tang, Z. and Tarini, L. H. and Tarnowsky, T. and Thein, D. and Thomas, J. H. and Tian, J. and Timmins, A. R. and Tlusty, D. and Tokarev, M. and Trainor, T. A. and Trentalange, S. and Tribble, R. E. and Tribedy, P. and Trzeciak, B. A. and Tsai, O. D. and Turnau, J. and Ullrich, T. and Underwood, D. G. and Van Buren, G. and van Nieuwenhuizen, G. and Vanfossen, J. A. and Varma, R. and Vasconcelos, G. M. S. and Videbæk, F. and Viyogi, Y. P. and Vokal, S. and Voloshin, S. A. and Vossen, A. and Wada, M. and Wang, F. and Wang, G. and Wang, H. and Wang, J. S. and Wang, Q. and Wang, X. L. and Wang, Y. and Webb, G. and Webb, J. C. and Westfall, G. D. and Whitten, C. and Wieman, H. and Wissink, S. W. and Witt, R. and Witzke, W. and Wu, Y. F. and Xiao, Z. and Xie, W. and Xin, K. and Xu, H. and Xu, N. and Xu, Q. H. and Xu, W. and Xu, Y. and Xu, Z. and Xue, L. and Yang, Y. and Yang, Y. and Yepes, P. and Yi, Y. and Yip, K. and Yoo, I-K. and Zawisza, M. and Zbroszczyk, H. and Zhang, J. B. and Zhang, S. and Zhang, W. M. and Zhang, X. P. and Zhang, Y. and Zhang, Z. P. and Zhao, F. and Zhao, J. and Zhong, C. and Zhu, X. and Zhu, Y. H. and Zoulkarneeva, Y.},
abstractNote = {Measurements of the differential cross section and the transverse single-spin asymmetry, AN, vs xF for π⁰ and η mesons are reported for 0.4F<0.75 at an average pseudorapidity of 3.68. A data sample of approximately 6.3 pb⁻¹ was analyzed, which was recorded during p↑+p collisions at √s=200 GeV by the STAR experiment at RHIC. The average transverse beam polarization was 56%. The cross section for π⁰, including the previously unmeasured region of xF>0.55, is consistent with a perturbative QCD prediction, and the η/π⁰ cross-section ratio agrees with existing midrapidity measurements. For 0.55F<0.75, the average AN for η is 0.210±0.056, and that for π⁰ is 0.081±0.016. The probability that these two asymmetries are equal is ~3%.},
doi = {10.1103/PhysRevD.86.051101},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 5,
volume = 86,
place = {United States},
year = {Wed Sep 05 00:00:00 EDT 2012},
month = {Wed Sep 05 00:00:00 EDT 2012}
}

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