@article{3146765,
    title = "Midrapidity Antiproton-to-Proton Ratio in pp Collisons root s=0.9 and 7
TeV Measured by the ALICE Experiment",
    author = "Aamodt, K. and Abel, N. and Abeysekara, U. and Quintana, A. Abrahantes and and Abramyan, A. and Adamova, D. and Aggarwal, M. M. and Rinella, G. and Aglieri and Agocs, A. G. and Salazar, S. Aguilar and Ahammed, Z. and and Ahmad, A. and Ahmad, N. and Ahn, S. U. and Akimoto, R. and Akindinov, A. and and Aleksandrov, D. and Alessandro, B. and Alfaro Molina, R. and Alici, and A. and Almaraz Avina, E. and Alme, J. and Alt, T. and Altini, V. and and Altinpinar, S. and Andrei, C. and Andronic, A. and Anelli, G. and and Angelov, V. and Anson, C. and Anticic, T. and Antinori, F. and Antinori, and S. and Antipin, K. and Antonczyk, D. and Antonioli, P. and Anzo, A. and and Aphecetche, L. and Appelshaeuser, H. and Arcelli, S. and Arceo, R. and and Arend, A. and Armesto, N. and Arnaldi, R. and Aronsson, T. and Arsene, and I. C. and Asryan, A. and Augustinus, A. and Averbeck, R. and Awes, T. C. and and Aysto, J. and Azmi, M. D. and Andronic, A. and Bablok, S. and Bach, and M. and Badala, A. and Baek, Y. W. and Bagnasco, S. and Bailhache, R. and and Bala, R. and Baldisser, A. and Baldit, A. and Ban, J. and Barbera, R. and and Barnafoldi, G. G. and Barnby, L. S. and Barret, V. and Bartke, J. and and Barile, F. and Basile, M. and Basmanov, V. and Bastid, N. and and Bathen, B. and Batigne, G. and Batyunya, B. and Baumann, C. and Bearden, and I. G. and Becker, B. and Belikov, I. and Bellwied, R. and and Belmont-Moreno, E. and Belogianni, A. and Benhabib, L. and Beole, S. and and Berceanu, I. and Bercuci, A. and Berdermann, E. and Berdnikov, Y. and and Betev, L. and Bhasin, A. and Bhati, A. K. and Bianchi, L. and Bianchi, and N. and Bianchin, C. and Bielcik, J. and Bielcikova, J. and Bilandzic, A. and and Bimbot, L. and Biolcati, E. and Blanc, A. and Blanco, F. and Blanco, and F. and Blau, D. and Blume, C. and Boccioli, M. and Bock, N. and and Bogdanov, A. and Boggild, H. and Bogolyubsky, M. and Bohm, J. and and Boldizsar, L. and Bombara, M. and Bombonati, C. and Bondila, M. and and Borel, H. and Borisov, A. and Bortolin, C. and Bose, S. and Bosisio, L. and and Bossu, F. and Botje, M. and Boettger, S. and Bourdaud, G. and Boyer, and B. and Braun, M. and Braun-Munzinger, P. and Bravina, L. and Bregant, M. and and Breitner, T. and Bruckner, G. and Brun, R. and Bruna, E. and Bruno, and G. E. and Budnikov, D. and Buesching, H. and Buncic, P. and Busch, O. and and Buthelezi, Z. and Caffarri, D. and Cai, X. and Caines, H. and Calvo, and E. and Camacho, E. and Camerini, P. and Campbell, M. and Roman, V. Canoa and and Capitani, G. P. and Romeo, G. Cara and Carena, F. and Carena, W. and and Carminati, F. and Diaz, A. Casanova and Caselle, M. and Castellanos, J. and Castillo and Hernandez, J. F. Castillo and Catanescu, V. and Cattaruzza, and E. and Cavicchioli, C. and Cerello, P. and Chambert, V. and Chang, B. and and Chapeland, S. and Charpy, A. and Charvet, J. L. and Chattopadhyay, and S. and Chattopadhyay, S. and Cherney, M. and Cheshkov, C. and Cheynis, and B. and Chiavassa, E. and Barroso, V. Chibante and Chinellato, D. D. and and Chochula, P. and Choi, K. and Chojnacki, M. and Christakoglou, P. and and Christensen, C. H. and Christiansen, P. and Chujo, T. and Chuman, F. and and Cicalo, C. and Cifarelli, L. and Cindolo, F. and Cleymans, J. and and Cobanoglu, O. and Coffin, J. -P. and Coli, S. and Colla, A. and and Balbastre, G. Conesa and del Valle, Z. Conesa and Conner, E. S. and and Constantin, P. and Contin, G. and Contreras, J. G. and Morales, Y. and Corrales and Cormier, T. M. and Cortese, P. and Maldonado, I. Cortes and and Cosentino, M. R. and Costa, F. and Cotallo, M. E. and Crescio, E. and and Crochet, P. and Cuautle, E. and Cunqueiro, L. and Cussonneau, J. and and Dainese, A. and Dalsgaard, H. H. and Danu, A. and Das, I. and Dash, A. and and Dash, S. and de Barros, G. O. V. and de Caro, A. and de Cataldo, G. and and de Cuveland, J. and De Falco, A. and De Gaspari, M. and de Groot, J. and and De Gruttola, D. and De Marco, N. and De Pasquale, S. and De Remigis, and R. and de Rooij, R. and de Vaux, G. and Delagrange, H. and Delgado, Y. and and Dellacasa, G. and Deloff, A. and Demanov, V. and Denes, E. and and Deppman, A. and D'Erasmo, G. and Derkach, D. and Devaux, A. and Di Bari, and D. and Di Giglio, C. and Di Liberto, S. and Di Mauro, A. and Di Nezza, and P. and Dialinas, M. and Diaz, L. and Diaz, R. and Dietel, T. and Divia, and R. and Djuvsland, O. and Dobretsov, V. and Dobrin, A. and Dobrowolski, and T. and Doenigus, B. and Dominguez, I. and Don, D. M. M. and Dordic, O. and and Dubey, A. K. and Dubuisson, J. and Ducroux, L. and Dupieux, P. and and Majumdar, A. K. Dutta and Majumdar, M. R. Dutta and Elia, D. and and Emschermann, D. and Enokizono, A. and Espagnon, B. and Estienne, M. and and Esumi, S. and Evans, D. and Evrard, S. and Eyyubova, G. and Fabjan, C. and W. and Fabris, D. and Faivre, J. and Falchieri, D. and Fantoni, A. and and Fasel, M. and Fateev, O. and Fearick, R. and Fedunov, A. and Fehlker, D. and and Fekete, V. and Felea, D. and Fenton-Olsen, B. and Feofilov, G. and and Fernandez Tellez, A. and Ferreiro, E. G. and Ferretti, A. and Ferretti, and R. and Figueredo, M. A. S. and Filchagin, S. and Fini, R. and Fionda, F. and M. and Fiore, E. M. and Floris, M. and Fodor, Z. and Foertsch, S. and and Foka, P. and Fokin, S. and Formenti, F. and Fragiacomo, E. and and Fragkiadakis, M. and Frankenfeld, U. and Frolov, A. and Fuchs, U. and and Furano, F. and Furget, C. and Girard, M. Fusco and Gaardhoje, J. J. and and Gadrat, S. and Gagliardi, M. and Gago, A. and Gallio, M. and Ganoti, P. and and Ganti, M. S. and Garabatos, C. and Trapaga, C. Garcia and Gebelein, and J. and Gemme, R. and Germain, M. and Gheata, A. and Gheata, M. and and Ghidini, B. and Ghosh, P. and Giraudo, G. and Giubellino, P. and and Gladysz-Dziadus, E. and Glasow, R. and Glaessel, P. and Glenn, A. and and Jimenez, R. Gomez and Santos, H. Gonzalez and Gonzalez-Trueba, L. H. and and Gonzalez-Zamora, P. and Gorbunov, S. and Gorbunov, Y. and Gotovac, S. and and Gottschlag, H. and Grabski, V. and Grajcarek, R. and Grelli, A. and and Grigoras, A. and Grigoras, C. and Grigoriev, V. and Grigoryan, A. and and Grigoryan, S. and Grinyov, B. and Grion, N. and Gros, P. and and Grosse-Oetringhaus, J. F. and Grossiord, J. -Y. and Grosso, R. and and Guber, F. and Guernane, R. and Guerra, C. and Guerzoni, B. and and Gulbrandsen, K. and Gulkanyan, H. and Gunji, T. and Gupta, A. and Gupta, and R. and Gustafsson, H. -A. and Gutbrod, H. and Haaland, O. and and Hadjidakis, C. and Haiduc, M. and Hamagaki, H. and Hamar, G. and and Hamblen, J. and Han, B. H. and Harris, J. W. and Hartig, M. and and Harutyunyan, A. and Hasch, D. and Hasegan, D. and Hatzifotiadou, D. and and Hayrapetyan, A. and Heide, M. and Heinz, M. and Helstrup, H. and and Herghelegiu, A. and Hernandez, C. and Corral, G. Herrera and Herrmann, and N. and Hetland, K. F. and Hicks, B. and Hiei, A. and Hille, P. T. and and Hippolyte, B. and Horaguchi, T. and Hori, Y. and Hristov, P. and and Hrivnacova, I. and Hu, S. and Huang, M. and Huber, S. and Humanic, T. J. and and Hutter, D. and Hwang, D. S. and Ichou, R. and Ilkaev, R. and Ilkiv, and I. and Inaba, M. and Innocenti, P. G. and Ippolitov, M. and Irfan, M. and and Ivan, C. and Ivanov, A. and Ivanov, M. and Ivanov, V. and Iwasaki, and T. and Jacholkowski, A. and Jacobs, P. and Jancurova, L. and Jangal, S. and and Janik, R. and Jena, C. and Jena, S. and Jirden, L. and Jones, G. T. and and Jones, P. G. and Jovanovic, P. and Jung, H. and Jung, W. and Jusko, and A. and Kaidalov, A. B. and Kalcher, S. and Kalinak, P. and Kalisky, M. and and Kalliokoski, T. and Kalweit, A. and Kamal, A. and Kamermans, R. and and Kanaki, K. and Kang, E. and Kang, J. H. and Kapitan, J. and Kaplin, V. and and Kapusta, S. and Karavichev, O. and Karavicheva, T. and Karpechev, E. and and Kazantsev, A. and Kebschull, U. and Keidel, R. and Khan, M. M. and and Khan, S. A. and Khanzadeev, A. and Kharlov, Y. and Kikola, D. and and Kileng, B. and Kim, D. J. and Kim, D. S. and Kim, D. W. and Kim, H. N. and and Kim, J. and Kim, J. H. and Kim, J. S. and Kim, M. and Kim, M. and and Kim, S. H. and Kim, S. and Kim, Y. and Kirsch, S. and Kisel, I. and and Kiselev, S. and Kisiel, A. and Klay, J. L. and Klein, J. and and Klein-Boesing, C. and Kliemant, M. and Klovning, A. and Kluge, A. and and Knichel, M. L. and Kniege, S. and Koch, K. and Kolevatov, R. and and Kolojvari, A. and Kondratiev, V. and Kondratyeva, N. and Konevskih, A. and and Kornas, E. and Kour, R. and Kowalski, M. and Kox, S. and Kozlov, K. and and Kral, J. and Kralik, I. and Kramer, F. and Kraus, I. and Kravcakova, and A. and Krawutschke, T. and Krivda, M. and Krumbhorn, D. and Krus, M. and and Kryshen, E. and Krzewicki, M. and Kucheriaev, Y. and Kuhn, C. and and Kuijer, P. G. and Kumar, L. and Kumar, N. and Kupczak, R. and and Kurashvili, P. and Kurepin, A. and Kurepin, A. N. and Kuryakin, A. and and Kushpil, S. and Kushpil, V. and Kutouski, M. and Kvaerno, H. and Kweon, and M. J. and Kwon, Y. and La Rocca, P. and Lackner, F. and de Guevara, P. and Ladron and Lafage, V. and Lal, C. and Lara, C. and Larsen, D. T. and and Laurenti, G. and Lazzeroni, C. and Le Bornec, Y. and Le Bris, N. and and Lee, H. and Lee, K. S. and Lee, S. C. and Lefevre, F. and Lenhardt, M. and and Leistam, L. and Lehnert, J. and Lenti, V. and Leon, H. and Monzon, and I. Leon and Vargas, H. Leon and Levai, P. and Li, X. and Li, Y. and and Lietava, R. and Lindal, S. and Lindenstruth, V. and Lippmann, C. and and Lisa, M. A. and Liu, L. and Loginov, V. and Lohn, S. and Lopez, X. and and Noriega, M. Lopez and Lopez-Ramirez, R. and Torres, E. Lopez and and Lovhoiden, G. and Soares, A. Lozea Feijo and Lu, S. and Lunardon, M. and and Luparello, G. and Luquin, L. and Lutz, J. -R. and Ma, K. and Ma, R. and and Madagodahettige-Don, D. M. and Maevskaya, A. and Mager, M. and and Mahapatra, D. P. and Maire, A. and Makhlyueva, I. and Mal'Kevich, D. and and Malaev, M. and Malagalage, K. J. and Cervantes, I. Maldonado and Malek, and M. and Malkiewicz, T. and Malzacher, P. and Mamonov, A. and Manceau, L. and and Mangotra, L. and Manko, V. and Manso, F. and Manzari, V. and Mao, Y. and and Mares, J. and Margagliotti, G. V. and Margotti, A. and Marin, A. and and Martashvili, I. and Martinengo, P. and Hernandez, M. I. Martinez and and Davalos, A. Martinez and Garcia, G. Martinez and Maruyama, Y. and and Chiesa, A. Marzari and Masciocchi, S. and Masera, M. and Masetti, M. and and Masoni, A. and Massacrier, L. and Mastromarco, M. and Mastroserio, A. and and Matthews, Z. L. and Matyja, A. and Mayani, D. and Mazza, G. and and Mazzoni, M. A. and Meddi, F. and Menchaca-Rocha, A. and Lorenzo, P. and Mendez and Meoni, M. and Perez, J. Mercado and Mereu, P. and Miake, Y. and and Michalon, A. and Miftakhov, N. and Milano, L. and Milosevic, J. and and Minafra, F. and Mischke, A. and Miskowiec, D. and Mitu, C. and and Mizoguchi, K. and Mlynarz, J. and Mohanty, B. and Molnar, L. and Mondal, and M. M. and Zetina, L. Montano and Monteno, M. and Montes, E. and Morando, and M. and Moretto, S. and Morsch, A. and Moukhanova, T. and Muccifora, V. and and Mudnic, E. and Muhuri, S. and Mueller, H. and Munhoz, M. G. and and Munoz, J. and Musa, L. and Musso, A. and Nandi, B. K. and Nania, R. and and Nappi, E. and Navach, F. and Navin, S. and Nayak, T. K. and Nazarenko, and S. and Nazarov, G. and Nedosekin, A. and Nendaz, F. and Newby, J. and and Nianine, A. and Nicassio, M. and Nielsen, B. S. and Nikolaev, S. and and Nikolic, V. and Nikulin, S. and Nikulin, V. and Nilsen, B. S. and and Nilsson, M. S. and Noferini, F. and Nomokonov, P. and Nooren, G. and and Novitzky, N. and Nyatha, A. and Nygaard, C. and Nyiri, A. and Nystrand, and J. and Ochirov, A. and Odyniec, G. and Oeschler, H. and Oinonen, M. and and Okada, K. and Okada, Y. and Oldenburg, M. and Oleniacz, J. and and Oppedisano, C. and Orsini, F. and Velasquez, A. Ortiz and Ortona, G. and and Oskarsson, A. and Osmic, F. and Oesterman, L. and Ostrowski, P. and and Otterlund, I. and Otwinowski, J. and Ovrebekk, G. and Oyama, K. and and Ozawa, K. and Pachmayer, Y. and Pachr, M. and Padilla, F. and Pagano, P. and and Paic, G. and Painke, F. and Pajares, C. and Pal, S. and Pal, S. K. and and Palaha, A. and Palmeri, A. and Panse, R. and Papikyan, V. and and Pappalardo, G. S. and Park, W. J. and Pastircak, B. and Pastore, C. and and Paticchio, V. and Pavlinov, A. and Pawlak, T. and Peitzmann, T. and and Pepato, A. and Pereira, H. and Peressounko, D. and Perez, C. and Perini, and D. and Perrino, D. and Peryt, W. and Peschek, J. and Pesci, A. and and Peskov, V. and Pestov, Y. and Peters, A. J. and Petracek, V. and and Petridis, A. and Petris, M. and Petrov, P. and Petrovici, M. and Petta, and C. and Peyre, J. and Piano, S. and Piccotti, A. and Pikna, M. and and Pillot, P. and Pinazza, O. and Pinsky, L. and Pitz, N. and Piuz, F. and and Platt, R. and Ploskon, M. and Pluta, J. and Pocheptsov, T. and and Pochybova, S. and Lerma, P. L. M. Podesta and Poggio, F. and Poghosyan, and M. G. and Polak, K. and Polichtchouk, B. and Polozov, P. and Polyakov, and V. and Pommeresch, B. and Pop, A. and Posa, F. and Pospisil, V. and and Potukuchi, B. and Pouthas, J. and Prasad, S. K. and Preghenella, R. and and Prino, F. and Pruneau, C. A. and Pshenichnov, I. and Puddu, G. and and Pujahari, P. and Pulvirenti, A. and Punin, A. and Punin, V. and Putis, and M. and Putschke, J. and Quercigh, E. and Rachevski, A. and Rademakers, and A. and Radomski, S. and Raiha, T. S. and Rak, J. and Rakotozafindrabe, and A. and Ramello, L. and Reyes, A. Ramirez and Rammler, M. and Raniwala, and R. and Raniwala, S. and Rasanen, S. S. and Rashevskaya, I. and Rath, S. and and Read, K. F. and Real, J. S. and Redlich, K. and Renfordt, R. and and Reolon, A. R. and Reshetin, A. and Rettig, F. and Revol, J. -P. and and Reygers, K. and Ricaud, H. and Riccati, L. and Ricci, R. A. and Richter, and M. and Riedler, P. and Riegler, W. and Riggi, F. and Rivetti, A. and and Cahuantzi, M. Rodriguez and Roed, K. and Roehrich, D. and Roman Lopez, and S. and Romita, R. and Ronchetti, F. and Rosinsky, P. and Rosnet, P. and and Rossegger, S. and Rossi, A. and Roukoutakis, F. and Rousseau, S. and and Roy, C. and Roy, P. and Rubio-Montero, A. J. and Rui, R. and Rusanov, I. and and Russo, G. and Ryabinkin, E. and Rybicki, A. and Sadovsky, S. and and Safarik, K. and Sahoo, R. and Saini, J. and Saiz, P. and Sakata, D. and and Salgado, C. A. and Domingues da Silva, R. Salgueiro and Salur, S. and and Samanta, T. and Sambyal, S. and Samsonov, V. and Sandor, L. and and Sandoval, A. and Sano, M. and Sano, S. and Santo, R. and Santoro, R. and and Sarkamo, J. and Saturnini, P. and Scapparone, E. and Scarlassara, F. and and Scharenberg, R. P. and Schiaua, C. and Schicker, R. and Schindler, H. and and Schmidt, C. and Schmidt, H. R. and Schossmaier, K. and Schreiner, S. and and Schuchmann, S. and Schukraft, J. and Schutz, Y. and Schwarz, K. and and Schweda, K. and Scioli, G. and Scomparin, E. and Scott, P. A. and and Segato, G. and Semenov, D. and Senyukov, S. and Seo, J. and Serci, S. and and Serkin, L. and Serradilla, E. and Sevcenco, A. and Sgura, I. and and Shabratova, G. and Shahoyan, R. and Sharkov, G. and Sharma, N. and and Sharma, S. and Shigaki, K. and Shimomura, M. and Shtejer, K. and and Sibiriak, Y. and Siciliano, M. and Sicking, E. and Siddi, E. and and Siemiarczuk, T. and Silenzi, A. and Silvermyr, D. and Simili, E. and and Simonetti, G. and Singaraju, R. and Singh, R. and Singhal, V. and Sinha, and B. C. and Sinha, T. and Sitar, B. and Skaali, T. B. and Sitta, M. and and Skjerdal, K. and Smakal, R. and Smirnov, N. and Snellings, R. and Snow, and H. and Sogaard, C. and Soloviev, A. and Soltveit, H. K. and Soltz, R. and and Sommer, W. and Son, C. W. and Son, H. and Song, M. and Soos, C. and and Soramel, F. and Soyk, D. and Spyropoulou-Stassinaki, M. and Srivastava, and B. K. and Stachel, J. and Staley, F. and Stan, E. and Stefanek, G. and and Stefanini, G. and Steinbeck, T. and Stenlund, E. and Steyn, G. and and Stocco, D. and Stock, R. and Stolpovsky, P. and Strmen, P. and Suaide, and A. A. P. and Vasquez, M. A. Subieta and Sugitate, T. and Suire, C. and and Sumbera, M. and Susa, T. and Swoboda, D. and Symons, J. and de Toledo, and A. Szanto and Szarka, I. and Szostak, A. and Szuba, M. and Tadel, M. and and Tagridis, C. and Takahara, A. and Takahashi, J. and Tanabe, R. and and Takaki, J. D. Tapia and Taureg, H. and Tauro, A. and Tavlet, M. and and Munoz, G. Tejeda and Telesca, A. and Terrevoli, C. and Thaeder, J. and and Tieulent, R. and Tlusty, D. and Toia, A. and Tolyhy, T. and de Matos, C. and Torcato and Torii, H. and Torralba, G. and Toscano, L. and Tosello, F. and and Tournaire, A. and Traczyk, T. and Tribedy, P. and Troeger, G. and and Truesdale, D. and Trzaska, W. H. and Tsiledakis, G. and Tsilis, E. and and Tsuji, T. and Tumkin, A. and Turrisi, R. and Turvey, A. and Tveter, T. and S. and Tydesjoe, H. and Tywoniuk, K. and Ulery, J. and Ullaland, K. and and Uras, A. and Urban, J. and Urciuoli, G. M. and Usai, G. L. and Vacchi, and A. and Vala, M. and Palomo, L. Valencia and Vallero, S. and van der and Kolk, N. and Vyvre, P. Vande and van Leeuwen, M. and Vannucci, L. and and Vargas, A. and Varma, R. and Vasiliev, A. and Vassiliev, I. and and Vasileiou, M. and Vechernin, V. and Venaruzzo, M. and Vercellin, E. and and Vergara, S. and Vernet, R. and Verweij, M. and Vetlitskiy, I. and and Vickovic, L. and Viesti, G. and Vikhlyantsev, O. and Vilakazi, Z. and and Baillie, O. Villalobos and Vinogradov, A. and Vinogradov, L. and and Vinogradov, Y. and Virgili, T. and Viyogi, Y. P. and Vodopianov, A. and and Voloshin, K. and Voloshin, S. and Volpe, G. and von Haller, B. and and Vranic, D. and Vrlakova, J. and Vulpescu, B. and Wagner, B. and Wagner, and V. and Wallet, L. and Wan, R. and Wang, D. and Wang, Y. and Wang, Y. and and Watanabe, K. and Wen, Q. and Wessels, J. and Westerhoff, U. and and Wiechula, J. and Wikne, J. and Wilk, A. and Wilk, G. and Williams, M. C. and S. and Willis, N. and Windelband, B. and Xu, C. and Yang, C. and Yang, and H. and Yasnopolskiy, S. and Yermia, F. and Yi, J. and Yin, Z. and and Yokoyama, H. and Yoo, I-K. and Yuan, X. and Yurevich, V. and Yushmanov, and I. and Zabrodin, E. and Zagreev, B. and Zalite, A. and Zampolli, C. and and Zanevsky, Yu. and Zaporozhets, S. and Zarochentsev, A. and Zavada, P. and and Zbroszczyk, H. and Zelnicek, P. and Zenin, A. and Zepeda, A. and and Zgura, I. and Zhalov, M. and Zhang, X. and Zhou, D. and Zhou, S. and and Zhu, J. and Zichichi, A. and Zinchenko, A. and Zinovjev, G. and and Zoccarato, Y. and Zychacek, V. and Zynovyev, M. and ALICE Collaboration",
    journal = "Physical Review and Physical Review Letters Index",
    year = "2010",
    volume = "105",
    number = "7",
    publisher = "AMER PHYSICAL SOC",
    issn = "0094-0003",
    doi = "10.1103/PhysRevLett.105.072002",
    abstract = "The ratio of the yields of antiprotons to protons in pp collisions has
been measured by the ALICE experiment at root s = 0.9 and 7 TeV during
the initial running periods of the Large Hadron Collider. The
measurement covers the transverse momentum interval 0.45 < p(t) < 1.05
GeV/c and rapidity vertical bar y vertical bar < 0.5. The ratio is
measured to be R-vertical bar y vertical bar<0.5 = 0.957 +/- 0.006(stat)
+/- 0.0014(syst) at 0.9 Tev and R-vertical bar y vertical bar<0.5 =
0.991 +/- 0.005 +/- 0.014(syst) at 7 TeV and it is independent of both
rapidity and transverse momentum. The results are consistent with the
conventional model of baryon-number transport and set stringent limits
on any additional contributions to baryon-number transfer over very
large rapidity intervals in pp collisions."
}