J / ψ polarization in p + p collisions at s = 200 GeV in STAR

Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Alford, J.; Anson, C. D.; Aparin, A.; Arkhipkin, D.; Aschenauer, E. C.; Averichev, G. S.; Balewski, J.; Banerjee, A.; Barnovska, Z.; Beavis, D. R.; Bellwied, R.; Bhasin, A.; Bhati, A. K.; Bhattarai, P.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Bland, L. C.; Bordyuzhin, I. G.; Borowski, W.; Bouchet, J.; Brandin, A. V.; Brovko, S. G.; Bültmann, S.; Bunzarov, I.; Burton, T. P.; Butterworth, J.; Caines, H.; Calderón de la Barca Sánchez, M.; Cebra, D.; Cendejas, R.; Cervantes, M. C.; Chaloupka, P.; Chang, Z.; Chattopadhyay, S.; Chen, H. F.; Chen, J. H.; Chen, L.; Cheng, J.; Cherney, M.; Chikanian, A.; Christie, W.; Chwastowski, J.; Codrington, M. J. M.; Corliss, R.; Cramer, J. G.; Crawford, H. J.; Cui, X.; Das, S.; Davila Leyva, A.; De Silva, L. C.; Debbe, R. R.; Dedovich, T. G.; Deng, J.; Derevschikov, A. A.; Derradi de Souza, R.; Dhamija, S.; di Ruzza, B.; Didenko, L.; Dilks, C.; Ding, F.; Djawotho, P.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Du, C. M.; Dunkelberger, L. E.; Dunlop, J. C.; Efimov, L. G.; Engelage, J.; Engle, K. S.; Eppley, G.; Eun, L.; Evdokimov, O.; Fatemi, R.; Fazio, S.; Fedorisin, J.; Filip, P.; Finch, E.; Fisyak, Y.; Flores, C. E.; Gagliardi, C. A.; Gangadharan, D. R.; Garand, D.; Geurts, F.; Gibson, A.; Girard, M.; Gliske, S.; Grosnick, D.; Guo, Y.; Gupta, A.; Gupta, S.; Guryn, W.; Haag, B.; Hajkova, O.; Hamed, A.; Han, L. -X.; Haque, R.; Harris, J. W.; Hays-Wehle, J. P.; Heppelmann, S.; Hirsch, A.; Hoffmann, G. W.; Hofman, D. J.; Horvat, S.; Huang, B.; Huang, H. Z.; Huang, X.; Huck, P.; Humanic, T. J.; Igo, G.; Jacobs, W. W.; Jang, H.; Judd, E. G.; Kabana, S.; Kalinkin, D.; Kang, K.; Kauder, K.; Ke, H. W.; Keane, D.; Kechechyan, A.; Kesich, A.; Khan, Z. H.; Kikola, D. P.; Kisel, I.; Kisiel, A.; Koetke, D. D.; Kollegger, T.; Konzer, J.; Koralt, I.; Korsch, W.; Kotchenda, L.; Kravtsov, P.; Krueger, K.; Kulakov, I.; Kumar, L.; Kycia, R. A.; Lamont, M. A. C.; Landgraf, J. M.; Landry, K. D.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, J. H.; Leight, W.; LeVine, M. J.; Li, C.; 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.; Luo, X.; Ma, G. L.; Ma, Y. G.; Madagodagettige Don, D. M. M. D.; Mahapatra, D. P.; Majka, R.; Margetis, S.; Markert, C.; Masui, H.; Matis, H. S.; McDonald, D.; McShane, T. S.; Minaev, N. G.; Mioduszewski, S.; Mohanty, B.; Mondal, M. M.; Morozov, D. A.; Munhoz, M. G.; Mustafa, M. K.; Nandi, B. K.; Nasim, Md.; Nayak, T. K.; Nelson, J. M.; Nogach, L. V.; Noh, S. Y.; Novak, J.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Oh, K.; Ohlson, A.; Okorokov, V.; Oldag, E. W.; Oliveira, R. A. N.; 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.; Pruthi, N. K.; Przybycien, M.; Pujahari, P. R.; Qiu, H.; Quintero, A.; Ramachandran, S.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Riley, C. K.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Ross, J. F.; Roy, A.; Ruan, L.; Rusnak, J.; Sahoo, N. R.; Sahu, P. K.; Sakrejda, I.; Salur, S.; Sandacz, A.; Sandweiss, J.; Sangaline, E.; Sarkar, A.; Schambach, J.; Scharenberg, R. P.; Schmah, A. M.; Schmidke, W. B.; Schmitz, N.; Seger, J.; Seyboth, P.; Shah, N.; Shahaliev, E.; Shanmuganathan, P. V.; Shao, M.; Sharma, B.; Shen, W. Q.; 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.; Stevens, J. R.; Stock, R.; Strikhanov, M.; Stringfellow, B.; Suaide, A. A. P.; Sumbera, M.; Sun, X.; 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.; Tarnowsky, T.; Thomas, J. H.; Timmins, A. R.; Tlusty, D.; Tokarev, M.; 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, Jr., J. A.; Varma, R.; Vasconcelos, G. M. S.; Vasiliev, A. N.; Vertesi, R.; Videbæk, F.; Viyogi, Y. P.; Vokal, S.; Vossen, A.; Wada, M.; Walker, M.; Wang, F.; Wang, G.; Wang, H.; Wang, J. S.; Wang, X. L.; Wang, Y.; Wang, Y.; Webb, G.; Webb, J. C.; Westfall, G. D.; Wieman, H.; Wissink, S. W.; Witt, R.; Wu, Y. F.; Xiao, Z.; Xie, W.; Xin, K.; Xu, H.; Xu, N.; Xu, Q. H.; Xu, Y.; Xu, Z.; Yan, W.; Yang, C.; Yang, Y.; Yang, Y.; Ye, Z.; Yepes, P.; Yi, L.; Yip, K.; Yoo, I. -K.; Zawisza, Y.; Zbroszczyk, H.; Zha, W.; Zhang, J. B.; Zhang, J. L.; Zhang, S.; Zhang, X. P.; Zhang, Y.; Zhang, Z. P.; Zhao, F.; Zhao, J.; Zhong, C.; Zhu, X.; Zhu, Y. H.; Zoulkarneeva, Y.; Zyzak, M.

doi:10.1016/j.physletb.2014.10.049

Title: $J / ψ$ polarization in $p + p$ collisions at $\sqrt{s} = 200 GeV$ in STAR

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Abstract

The study report on a polarization measurement of inclusive J/ψ mesons in the di-electron decay channel at mid-rapidity at 2_T<6 GeV/c in p+p collisions at √s = 200 GeV. Data were taken with the STAR detector at RHIC. The J/ψ polarization measurement should help to distinguish between different models of the J/ψ production mechanism since they predict different p_T dependences of the J/ψ polarization. In this analysis, J/ψ polarization is studied in the helicity frame. The polarization parameter λ_θ measured at RHIC becomes smaller towards high p_T, indicating more longitudinal J/ψ polarization as p_T increases. The result is compared with predictions of presently available models.

Authors:: Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Alford, J.; Anson, C. D.; Aparin, A.; Arkhipkin, D.; Aschenauer, E. C.; Averichev, G. S.; Balewski, J.; Banerjee, A.; Barnovska, Z.; Beavis, D. R.; Bellwied, R.; Bhasin, A.; Bhati, A. K.; Bhattarai, P. more »« less

Publication Date:: Mon Dec 01 00:00:00 EST 2014

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1214409

Alternate Identifier(s):: OSTI ID: 1223123

Grant/Contract Number:: AC02-06CH11357; NRF-2012004024

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 739 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; charmonia; polarization; spin alignment; STAR; RHIC

Citation Formats


                    Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Alford, J., Anson, C. D., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Averichev, G. S., Balewski, J., Banerjee, A., Barnovska, Z., Beavis, D. R., Bellwied, R., Bhasin, A., Bhati, A. K., Bhattarai, P., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Borowski, W., Bouchet, J., Brandin, A. V., Brovko, S. G., Bültmann, S., Bunzarov, I., Burton, T. P., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Cendejas, R., Cervantes, M. C., Chaloupka, P., Chang, Z., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, L., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Chwastowski, J., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Cui, X., Das, S., Davila Leyva, A., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derevschikov, A. A., Derradi de Souza, R., Dhamija, S., di Ruzza, B., Didenko, L., Dilks, C., Ding, F., Djawotho, P., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Engelage, J., Engle, K. S., Eppley, G., Eun, L., Evdokimov, O., Fatemi, R., Fazio, S., Fedorisin, J., Filip, P., Finch, E., Fisyak, Y., Flores, C. E., Gagliardi, C. A., Gangadharan, D. R., Garand, D., Geurts, F., Gibson, A., Girard, M., Gliske, S., Grosnick, D., Guo, Y., Gupta, A., Gupta, S., Guryn, W., Haag, B., Hajkova, O., Hamed, A., Han, L. -X., Haque, R., Harris, J. W., Hays-Wehle, J. P., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, H. Z., Huang, X., Huck, P., Humanic, T. J., Igo, G., Jacobs, W. W., Jang, H., Judd, E. G., Kabana, S., Kalinkin, D., Kang, K., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kesich, A., Khan, Z. H., Kikola, D. P., Kisel, I., Kisiel, A., Koetke, D. D., Kollegger, T., Konzer, J., Koralt, I., Korsch, W., Kotchenda, L., Kravtsov, P., Krueger, K., Kulakov, I., Kumar, L., Kycia, R. A., Lamont, M. A. C., Landgraf, J. M., Landry, K. D., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leight, W., LeVine, M. J., Li, C., 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., Luo, X., Ma, G. L., Ma, Y. G., Madagodagettige Don, D. M. M. D., Mahapatra, D. P., Majka, R., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., McShane, T. S., Minaev, N. G., Mioduszewski, S., Mohanty, B., Mondal, M. M., Morozov, D. A., Munhoz, M. G., Mustafa, M. K., Nandi, B. K., Nasim, Md., Nayak, T. K., Nelson, J. M., Nogach, L. V., Noh, S. Y., Novak, J., Nurushev, S. B., Odyniec, G., Ogawa, A., Oh, K., Ohlson, A., Okorokov, V., Oldag, E. W., Oliveira, R. A. N., 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., Pruthi, N. K., Przybycien, M., Pujahari, P. R., Qiu, H., Quintero, A., Ramachandran, S., Raniwala, R., Raniwala, S., Ray, R. L., Riley, C. K., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ross, J. F., Roy, A., Ruan, L., Rusnak, J., Sahoo, N. R., Sahu, P. K., Sakrejda, I., Salur, S., Sandacz, A., Sandweiss, J., Sangaline, E., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, W. B., Schmitz, N., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Sharma, B., Shen, W. Q., 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., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Sumbera, M., Sun, X., 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., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Tokarev, M., 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, Jr., J. A., Varma, R., Vasconcelos, G. M. S., Vasiliev, A. N., Vertesi, R., Videbæk, F., Viyogi, Y. P., Vokal, S., Vossen, A., Wada, M., Walker, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, X. L., Wang, Y., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y. F., Xiao, Z., Xie, W., Xin, K., Xu, H., Xu, N., Xu, Q. H., Xu, Y., Xu, Z., Yan, W., Yang, C., Yang, Y., Yang, Y., Ye, Z., Yepes, P., Yi, L., Yip, K., Yoo, I. -K., Zawisza, Y., Zbroszczyk, H., Zha, W., Zhang, J. B., Zhang, J. L., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, F., Zhao, J., Zhong, C., Zhu, X., Zhu, Y. H., Zoulkarneeva, Y., and Zyzak, M. J / ψ polarization in p + p collisions at s = 200 GeV in STAR.  Netherlands: N. p., 2014. 
Web.  doi:10.1016/j.physletb.2014.10.049.

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                    Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Alford, J., Anson, C. D., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Averichev, G. S., Balewski, J., Banerjee, A., Barnovska, Z., Beavis, D. R., Bellwied, R., Bhasin, A., Bhati, A. K., Bhattarai, P., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Borowski, W., Bouchet, J., Brandin, A. V., Brovko, S. G., Bültmann, S., Bunzarov, I., Burton, T. P., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Cendejas, R., Cervantes, M. C., Chaloupka, P., Chang, Z., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, L., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Chwastowski, J., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Cui, X., Das, S., Davila Leyva, A., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derevschikov, A. A., Derradi de Souza, R., Dhamija, S., di Ruzza, B., Didenko, L., Dilks, C., Ding, F., Djawotho, P., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Engelage, J., Engle, K. S., Eppley, G., Eun, L., Evdokimov, O., Fatemi, R., Fazio, S., Fedorisin, J., Filip, P., Finch, E., Fisyak, Y., Flores, C. E., Gagliardi, C. A., Gangadharan, D. R., Garand, D., Geurts, F., Gibson, A., Girard, M., Gliske, S., Grosnick, D., Guo, Y., Gupta, A., Gupta, S., Guryn, W., Haag, B., Hajkova, O., Hamed, A., Han, L. -X., Haque, R., Harris, J. W., Hays-Wehle, J. P., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, H. Z., Huang, X., Huck, P., Humanic, T. J., Igo, G., Jacobs, W. W., Jang, H., Judd, E. G., Kabana, S., Kalinkin, D., Kang, K., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kesich, A., Khan, Z. H., Kikola, D. P., Kisel, I., Kisiel, A., Koetke, D. D., Kollegger, T., Konzer, J., Koralt, I., Korsch, W., Kotchenda, L., Kravtsov, P., Krueger, K., Kulakov, I., Kumar, L., Kycia, R. A., Lamont, M. A. C., Landgraf, J. M., Landry, K. D., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leight, W., LeVine, M. J., Li, C., 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., Luo, X., Ma, G. L., Ma, Y. G., Madagodagettige Don, D. M. M. D., Mahapatra, D. P., Majka, R., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., McShane, T. S., Minaev, N. G., Mioduszewski, S., Mohanty, B., Mondal, M. M., Morozov, D. A., Munhoz, M. G., Mustafa, M. K., Nandi, B. K., Nasim, Md., Nayak, T. K., Nelson, J. M., Nogach, L. V., Noh, S. Y., Novak, J., Nurushev, S. B., Odyniec, G., Ogawa, A., Oh, K., Ohlson, A., Okorokov, V., Oldag, E. W., Oliveira, R. A. N., 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., Pruthi, N. K., Przybycien, M., Pujahari, P. R., Qiu, H., Quintero, A., Ramachandran, S., Raniwala, R., Raniwala, S., Ray, R. L., Riley, C. K., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ross, J. F., Roy, A., Ruan, L., Rusnak, J., Sahoo, N. R., Sahu, P. K., Sakrejda, I., Salur, S., Sandacz, A., Sandweiss, J., Sangaline, E., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, W. B., Schmitz, N., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Sharma, B., Shen, W. Q., 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., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Sumbera, M., Sun, X., 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., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Tokarev, M., 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, Jr., J. A., Varma, R., Vasconcelos, G. M. S., Vasiliev, A. N., Vertesi, R., Videbæk, F., Viyogi, Y. P., Vokal, S., Vossen, A., Wada, M., Walker, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, X. L., Wang, Y., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y. F., Xiao, Z., Xie, W., Xin, K., Xu, H., Xu, N., Xu, Q. H., Xu, Y., Xu, Z., Yan, W., Yang, C., Yang, Y., Yang, Y., Ye, Z., Yepes, P., Yi, L., Yip, K., Yoo, I. -K., Zawisza, Y., Zbroszczyk, H., Zha, W., Zhang, J. B., Zhang, J. L., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, F., Zhao, J., Zhong, C., Zhu, X., Zhu, Y. H., Zoulkarneeva, Y., & Zyzak, M. J / ψ polarization in p + p collisions at s = 200 GeV in STAR.  Netherlands.  https://doi.org/10.1016/j.physletb.2014.10.049

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                    Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Alford, J., Anson, C. D., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Averichev, G. S., Balewski, J., Banerjee, A., Barnovska, Z., Beavis, D. R., Bellwied, R., Bhasin, A., Bhati, A. K., Bhattarai, P., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Borowski, W., Bouchet, J., Brandin, A. V., Brovko, S. G., Bültmann, S., Bunzarov, I., Burton, T. P., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Cendejas, R., Cervantes, M. C., Chaloupka, P., Chang, Z., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, L., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Chwastowski, J., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Cui, X., Das, S., Davila Leyva, A., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derevschikov, A. A., Derradi de Souza, R., Dhamija, S., di Ruzza, B., Didenko, L., Dilks, C., Ding, F., Djawotho, P., Dong, X., Drachenberg, J. L., Draper, J. E., Du, C. M., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Engelage, J., Engle, K. S., Eppley, G., Eun, L., Evdokimov, O., Fatemi, R., Fazio, S., Fedorisin, J., Filip, P., Finch, E., Fisyak, Y., Flores, C. E., Gagliardi, C. A., Gangadharan, D. R., Garand, D., Geurts, F., Gibson, A., Girard, M., Gliske, S., Grosnick, D., Guo, Y., Gupta, A., Gupta, S., Guryn, W., Haag, B., Hajkova, O., Hamed, A., Han, L. -X., Haque, R., Harris, J. W., Hays-Wehle, J. P., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Hofman, D. J., Horvat, S., Huang, B., Huang, H. Z., Huang, X., Huck, P., Humanic, T. J., Igo, G., Jacobs, W. W., Jang, H., Judd, E. G., Kabana, S., Kalinkin, D., Kang, K., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kesich, A., Khan, Z. H., Kikola, D. P., Kisel, I., Kisiel, A., Koetke, D. D., Kollegger, T., Konzer, J., Koralt, I., Korsch, W., Kotchenda, L., Kravtsov, P., Krueger, K., Kulakov, I., Kumar, L., Kycia, R. A., Lamont, M. A. C., Landgraf, J. M., Landry, K. D., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leight, W., LeVine, M. J., Li, C., 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., Luo, X., Ma, G. L., Ma, Y. G., Madagodagettige Don, D. M. M. D., Mahapatra, D. P., Majka, R., Margetis, S., Markert, C., Masui, H., Matis, H. S., McDonald, D., McShane, T. S., Minaev, N. G., Mioduszewski, S., Mohanty, B., Mondal, M. M., Morozov, D. A., Munhoz, M. G., Mustafa, M. K., Nandi, B. K., Nasim, Md., Nayak, T. K., Nelson, J. M., Nogach, L. V., Noh, S. Y., Novak, J., Nurushev, S. B., Odyniec, G., Ogawa, A., Oh, K., Ohlson, A., Okorokov, V., Oldag, E. W., Oliveira, R. A. N., 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., Pruthi, N. K., Przybycien, M., Pujahari, P. R., Qiu, H., Quintero, A., Ramachandran, S., Raniwala, R., Raniwala, S., Ray, R. L., Riley, C. K., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ross, J. F., Roy, A., Ruan, L., Rusnak, J., Sahoo, N. R., Sahu, P. K., Sakrejda, I., Salur, S., Sandacz, A., Sandweiss, J., Sangaline, E., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmidke, W. B., Schmitz, N., Seger, J., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Sharma, B., Shen, W. Q., 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., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Sumbera, M., Sun, X., 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., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Tokarev, M., 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, Jr., J. A., Varma, R., Vasconcelos, G. M. S., Vasiliev, A. N., Vertesi, R., Videbæk, F., Viyogi, Y. P., Vokal, S., Vossen, A., Wada, M., Walker, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, X. L., Wang, Y., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y. F., Xiao, Z., Xie, W., Xin, K., Xu, H., Xu, N., Xu, Q. H., Xu, Y., Xu, Z., Yan, W., Yang, C., Yang, Y., Yang, Y., Ye, Z., Yepes, P., Yi, L., Yip, K., Yoo, I. -K., Zawisza, Y., Zbroszczyk, H., Zha, W., Zhang, J. B., Zhang, J. L., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, F., Zhao, J., Zhong, C., Zhu, X., Zhu, Y. H., Zoulkarneeva, Y., and Zyzak, M. Mon .  
"J / ψ polarization in p + p collisions at s = 200 GeV in STAR".  Netherlands.  https://doi.org/10.1016/j.physletb.2014.10.049.

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@article{osti_1214409,

  title        = {J / ψ polarization in p + p collisions at s = 200 GeV in STAR},

  author       = {Adamczyk, L. and Adkins, J. K. and Agakishiev, G. and Aggarwal, M. M. and Ahammed, Z. and Alekseev, I. and Alford, J. and Anson, C. D. and Aparin, A. and Arkhipkin, D. and Aschenauer, E. C. and Averichev, G. S. and Balewski, J. and Banerjee, A. and Barnovska, Z. and Beavis, D. R. and Bellwied, R. and Bhasin, A. and Bhati, A. K. and Bhattarai, P. and Bichsel, H. and Bielcik, J. and Bielcikova, J. and Bland, L. C. and Bordyuzhin, I. G. and Borowski, W. and Bouchet, J. and Brandin, A. V. and Brovko, S. G. and Bültmann, S. and Bunzarov, I. and Burton, T. P. and Butterworth, J. and Caines, H. and Calderón de la Barca Sánchez, M. and Cebra, D. and Cendejas, R. and Cervantes, M. C. and Chaloupka, P. and Chang, Z. and Chattopadhyay, S. and Chen, H. F. and Chen, J. H. and Chen, L. and Cheng, J. and Cherney, M. and Chikanian, A. and Christie, W. and Chwastowski, J. and Codrington, M. J. M. and Corliss, R. and Cramer, J. G. and Crawford, H. J. and Cui, X. and Das, S. and Davila Leyva, A. and De Silva, L. C. and Debbe, R. R. and Dedovich, T. G. and Deng, J. and Derevschikov, A. A. and Derradi de Souza, R. and Dhamija, S. and di Ruzza, B. and Didenko, L. and Dilks, C. and Ding, F. 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 Engelage, J. and Engle, K. S. and Eppley, G. and Eun, L. and Evdokimov, O. and Fatemi, R. and Fazio, S. and Fedorisin, J. and Filip, P. and Finch, E. and Fisyak, Y. and Flores, C. E. and Gagliardi, C. A. and Gangadharan, D. R. and Garand, D. and Geurts, F. and Gibson, A. and Girard, M. and Gliske, S. and Grosnick, D. and Guo, Y. and Gupta, A. and Gupta, S. and Guryn, W. and Haag, B. and Hajkova, O. and Hamed, A. and Han, L. -X. and Haque, R. 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 Huang, X. and Huck, P. and Humanic, T. J. and Igo, G. and Jacobs, W. W. and Jang, H. and Judd, E. G. and Kabana, S. and Kalinkin, D. and Kang, K. and Kauder, K. and Ke, H. W. and Keane, D. and Kechechyan, A. and Kesich, A. and Khan, Z. H. and Kikola, D. P. and Kisel, I. and Kisiel, A. and Koetke, D. D. and Kollegger, T. and Konzer, J. and Koralt, I. and Korsch, W. and Kotchenda, L. and Kravtsov, P. and Krueger, K. and Kulakov, I. and Kumar, L. and Kycia, R. A. and Lamont, M. A. C. and Landgraf, J. M. and Landry, K. D. 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, 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 Luo, X. and Ma, G. L. and Ma, Y. G. and Madagodagettige Don, D. M. M. D. and Mahapatra, D. P. and Majka, R. and Margetis, S. and Markert, C. and Masui, H. and Matis, H. S. and McDonald, D. and McShane, T. S. and Minaev, N. G. and Mioduszewski, S. and Mohanty, B. and Mondal, M. M. and Morozov, D. A. and Munhoz, M. G. and Mustafa, M. K. and Nandi, B. K. and Nasim, Md. and Nayak, T. K. and Nelson, J. M. and Nogach, L. V. and Noh, S. Y. and Novak, J. and Nurushev, S. B. 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 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 Pruthi, N. K. and Przybycien, M. and Pujahari, P. R. and Qiu, H. and Quintero, A. and Ramachandran, S. and Raniwala, R. and Raniwala, S. and Ray, R. L. 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 Roy, A. and Ruan, L. and Rusnak, J. and Sahoo, N. R. and Sahu, P. K. 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, W. B. and Schmitz, N. and Seger, J. and Seyboth, P. and Shah, N. and Shahaliev, E. and Shanmuganathan, P. V. and Shao, M. and Sharma, B. and Shen, W. Q. 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 Stevens, J. R. and Stock, R. and Strikhanov, M. and Stringfellow, B. and Suaide, A. A. P. and Sumbera, M. and Sun, X. 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 Tarnowsky, T. and Thomas, J. H. and Timmins, A. R. and Tlusty, D. and Tokarev, M. 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, Jr., J. A. and Varma, R. and Vasconcelos, G. M. S. and Vasiliev, A. N. and Vertesi, R. and Videbæk, F. and Viyogi, Y. P. and Vokal, S. and Vossen, A. and Wada, M. and Walker, M. and Wang, F. and Wang, G. and Wang, H. and Wang, J. S. and Wang, X. L. and Wang, Y. and Wang, Y. and Webb, G. and Webb, J. C. and Westfall, G. D. and Wieman, H. and Wissink, S. W. and Witt, R. 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, Y. and Xu, Z. and Yan, W. and Yang, C. and Yang, Y. and Yang, Y. and Ye, Z. and Yepes, P. and Yi, L. and Yip, K. and Yoo, I. -K. and Zawisza, Y. and Zbroszczyk, H. and Zha, W. and Zhang, J. B. and Zhang, J. L. and Zhang, S. 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. and Zyzak, M.},

  abstractNote = {The study report on a polarization measurement of inclusive J/ψ mesons in the di-electron decay channel at mid-rapidity at 2T<6 GeV/c in p+p collisions at √s = 200 GeV. Data were taken with the STAR detector at RHIC. The J/ψ polarization measurement should help to distinguish between different models of the J/ψ production mechanism since they predict different pT dependences of the J/ψ polarization. In this analysis, J/ψ polarization is studied in the helicity frame. The polarization parameter λθ measured at RHIC becomes smaller towards high pT, indicating more longitudinal J/ψ polarization as pT increases. The result is compared with predictions of presently available models.},

  doi          = {10.1016/j.physletb.2014.10.049},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 739,

  place        = {Netherlands},

  year         = {Mon Dec 01 00:00:00 EST 2014},

  month        = {Mon Dec 01 00:00:00 EST 2014}

}

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Measurement of the cross section ratio $σ_{t \bar{t} b \bar{b}} / σ_{t \bar{t} jj}$ in $p p$ collisions at $\sqrt{s} = 8 TeV$

Journal Article Khachatryan, V. ; Sirunyan, A. M. ; Tumasyan, A. ; ... - Physics Letters B

In this study, the first measurement of the cross section ratio σ_ttbb¯/σ_ttjj is presented using a data sample corresponding to an integrated luminosity of 19.6 fb^–1 collected in pp collisions at √s = 8 with the CMS detector at the LHC. Events with two leptons (e or μ ) and four reconstructed jets, including two identified as b quark jets, in the final state are selected. The ratio is determined for a minimum jet transverse momentum p_T of both 20 and 40 GeV/c.
Cited by 26
https://doi.org/10.1016/j.physletb.2015.04.060
Measurement of the ratio $B (B_{s}^{0} \to J / ψ f_{0} (980)) / B (B_{s}^{0} \to J / ψ ϕ (1020))$ in pp collisions at $\sqrt{s} = 7 TeV$

Journal Article Khachatryan, V. ; Sirunyan, A. M. ; Tumasyan, A. ; ... - Physics Letters B

The ratio Rf0/φ of the branching fractions of the B⁰ _s meson to the CP-odd eigenstate J/ψ f₀(980) and to J/ψ φ(1020) is measured, where J/ψ → µ ⁺µ ^-, f₀ → π ⁺π ^-, and φ → K⁺K^-. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment, corresponding to an integrated luminosity of 5.3 fb^-1 . The result is R_f0/φ = 0.140 ± 0.013 ± 0.018, where the first uncertainty is statistical and the second is systematic. This result is consistent with theoretical predictions andmore »« less
Cited by 4
https://doi.org/10.1016/j.physletb.2016.02.047
PHENIX Measurement of B → J/ ψ in Cu+Au collisions at $\sqrt{s_{N N}} = 200 GeV$ and in p + p collisions at 200 GeV and 510 GeV

Journal Article Da Silva, Cesar L - Nuclear Physics. A

This study is part of the RHIC program to probe properties of the Quark-Gluon Plasma medium properties using heavy quark energy loss. Part of the control of these measurements is to understand initial production of heavy quarks and how initial conditions in nucleus collisions can alter their yields. This manuscript reports the effort made by the PHENIX collaboration to measure total B-mesons yields, by looking at the fraction of muons from non-prompt J/ψ decays at displaced vertices in p+p and Cu+Au collisions. The total cross-sections of b-quarks in 200 GeV and 510 GeV p+p collisions follow the increasing trend frommore »« less
Cited by 1
https://doi.org/10.1016/j.nuclphysa.2017.04.042

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